gearbox

Articles About gearbox


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FVA-WORKBENCH 5.6 Software for efficient, high-end gearbox simulation

The FVA-Workbench can be used to design precise gearbox systems in seconds. As the only software that converts the results of the latest research into powerful calculation methods, the FVA-Workbench is always on the cutting edge. With the release of FVA-Workbench 5.6, FVA GmbH has made its high-performance simulation platform an essential tool for efficient gearbox development. Courtesy of FVA GmbH
www.powertransmission.com/sc/fva-gearbox-design-software/

The First Family of Dedicated Rack & Pinion Reducers

Redex-Andantex makes a family of high precision planetary reducers specifically designed for use with racks on linear axes and ring gears on rotary axes for machine tools and automation equipment. Our reducers achieve minimum to ZERO-BACKLASH, extremely high compound stiffness, high efficiency through our unique design. Download our free whitepaper to learn more. White Papers Courtesy of Andantex USA
www.powertransmission.com/sc/andantex-rack-pinion-family/

Servo Reducer Solutions for Demanding, High Performance Applications

Find out about the benefits of a high performance Servo Worm Gearbox, and get an understanding of what applications & industries are ideal for this gearbox. By attending this webinar you will be able to identify applications well-suited for a high performance servo worm reducer and understand the construction differences among each model of DieQua's servo worm gear reducer. Webinars Courtesy of Diequa
www.powertransmission.com/sc/diequa-servo-worm-drives/

Cost Effective High Precision Linear & Rotary Axes

Andantex, USA, a member of the Redex-Group, offers modular system building blocks consisting of Hardened & Ground Racks, High Quality Planetary Reducers including Output pinions, Ring Gears and Automatic lubrication systems to build linear axes of any length and move weights from 100 to 200,000 Lbs. White Paper Courtesy of Andantex USA
www.powertransmission.com/sc/andantex-linear-rotary/

How Modified Standard Gearboxes Solve Real-World Problems

Gearboxes are essential for practically every industry. What happens when there are specific challenges presented - whether it be environmental, safety or application challenges? How can a gearbox work in extreme conditions? Learn how we can implement a standard gearbox with modifications that are ideal for your applications.

ABOUT THE PRESENTER:
Hitesh Patel has a degree in Mechanical Engineering from the University of Illinois at Chicago. With 14 years of various experience throughout different industries, Hitesh started working at DieQua straight out of college as a Product support specialist. 12 years later, Hitesh returned to DieQua, this time, as a Product Manager for Power Transmission components. Hitesh currently works with inside and outside sales for defining and planning product enhancements and developments for both current and NEW products. In addition to this, he also helps with mapping strategic goals with distributors, OEMs and system integrators for business growth.

Meikel Quaas, President and co-owner of DieQua Corporation, is a degreed Mechanical Engineer from the University of Illinois. Mike is the second generation owner of DieQua and has been serving as President since 1998. He is also active on a daily basis on the engineering and sales floor and is constantly working with customers, creating engineered solutions to a constant stream of power transmission applications. Webinars Courtesy of Diequa Corporation

www.powertransmission.com/sc/diequa-food-grade-gearboxes/

Articles are sorted by RELEVANCE. Sort by Date.

1 Determination of Load Distributions on Double Helical-Geared Planetary Gearboxes (June 2017)

Standardized calculation methods such as ISO 6336 and DIN 3990 already exist to determine the load distributions on gears inside a planetary gearbox, but by their very universal nature, these methods offer varying results depending on the gearbox design. Double helical gears, in particular, can benefit from more specific, complex algorithms to reach a maximum level of efficiency. Double helical gears interact with the rest of the gearbox differently than helical or spur gears, and thus benefit from different analytical models outside the standardized methods. The present research project describes the algorithm to determine the load distribution of planetary gearboxes with double helical gears.

2 How to Get the Most Realistic Efficiency Calculation for Gearboxes (April 2015)

In recent years the estimation of gearbox power loss is attracting more interest — especially in the wind turbine and automotive gearbox industry — but also in industrial gearboxes where heat dissipation is a consideration as well. As new transmissions concepts are being researched to meet both ecological and commercial demands, a quick and reliable estimation of overall efficiency becomes inevitable in designing the optimal gearbox.

3 Best Practices for Gearbox Assembly and Disassembly (March 2014)

In most applications, gearbox reliability is critical to the productivity of the overall plant operation. So it follows that when industry is looking at the best ways to increase efficiency, reduce downtime, and increase profitability, gearbox performance and reliability are key factors. Designing for repair, and writing effective repair procedures, can speed the service time, and provide a quality refurbishment. The best practices listed in this article are proven, effective methods used to install and remove bearings, seals, gears, couplings and shafts within a gearbox.

4 Holistic Simulation of Gearboxes - System Simulation (August 2018)

Gearboxes are important assemblies within mechatronic systems. During the design phase of such systems it is essential to know the gearbox behavior under consideration of dynamic interactions with its environment. Holistic system simulation helps the engineer to understand this and to improve, adjust, or optimize gearboxes and their application.

5 Monitoring Concept Study for Aerospace Power Gearbox Drivetrain (August 2020)

Rolls-Royce is pioneering the UltraFan engine family architecture containing a planetary gearbox in a power range of 15 to 80 megawatts. To increase the efficiency of the UltraFan, a planetary gearbox is introduced between fan and intermediate pressure compressor. This enables running the turbine to rotate faster and allows a reduced fan speed.

6 Gearbox Innovation Evolves in Step with Expanding Servo Market (September 2018)

Approximately one quarter of all servo motors around the world require some type of gear reduction in their applications. From large satellite dishes to precision medical devices, gearboxes boost torque and reduce speed for servos in order for them to be sized more efficiently. While gearbox fundamentals haven't changed much over the past 20 years, their effectiveness has improved significantly, driven mostly by the need to accommodate advancements in servo technology.

7 Wind Turbine Field and Test Rig Testing as Part of the Design Process for Gearboxes (September 2014)

The growth of worldwide energy consumption and emerging industrial markets demands an increase of renewable energy shares. The price pressure coming from coal, oil, nuclear and natural gas energy - combined with enormous worldwide production capacities for components of wind turbines - make wind energy a highly competitive market. The testing and validation of gearboxes within the test rig and the turbine environment attract a strong focus to the needs of the industry. The following contribution sums up the typical process requirements and provides examples for successful system and component verifications based on field measurements.

8 Gearbox Development for the Food and Beverage Processing Industry (September 2019)

How one gearbox manufacturer took an existing design and transformed it to meet the needs of this demanding environment.

9 Premature Bearing Failures in Wind Gearboxes and White Etching Cracks (October 2014)

Wind turbine gearboxes are subjected to a wide variety of operating conditions, some of which may push the bearings beyond their limits. Damage may be done to the bearings, resulting in a specific premature failure mode known as white etching cracks (WEC), sometimes called brittle, short-life, early, abnormal or white structured flaking (WSF). Measures to make the bearings more robust in these operating conditions are discussed in this article.

10 Finite Element Evaluation of Bearing Instrumentation Method (December 2014)

This paper presents an evaluation of measurements being taken on a 750 kW wind turbine gearbox being tested by the National Renewable Energy Laboratory (NREL). High-speed stage gears and bearings have been identified as critical components of the gearbox; during gearbox testing, these components were instrumented and tests were developed to evaluate loads on high-speed tapered roller bearings (TRBs). In this paper an advanced finite element-based contact modeling procedure has been applied to model the high-speed stage with the bearings fully modeled in order to evaluate strain levels. A major conclusion is that the strains of the slotted grooves are at such a level that they have acceptable signal-to-noise levels. This was verified by the results of the initial experiments presented here.

11 Theoretical and Experimental Study of the Frictional Losses of Radial Shaft Seals for Industrial Gearbox (June 2015)

The improvement of the energy efficiency of industrial gear motors and gearboxes is a common problem for many gear unit manufacturers and end-users. As is typical of other mechanical components, the radial lip seals used in such units generate friction and heat, thus contributing to energy losses of mechanical systems. There exist today simulation tools that are already helping improve the efficiency of mechanical systems — but accurate models for seal frictional losses need to be developed. In this paper SKF presents an engineering model for radial lip seal friction based on a physical approach.

12 Investigations of Bearing Failures Associated with White Etching Areas (WEAs) in Wind Turbine Gearboxes (March 2014)

A critical problem for wind turbine gearboxes is failure of rolling element bearings where axial cracks form on the inner rings. This article presents field experience from operating wind turbines that compares the performance of through-hardened and carburized materials. It reveals that through-hardened bearings develop WEA/WECs and fail with axial cracks, whereas carburized bearings do not. The field experience further shows that a carburized bearing with a core having low carbon content, high nickel content, greater compressive residual stresses, and a higher amount of retained austenite provides higher fracture resistance and makes carburized bearings more durable than through-hardened bearings in the wind turbine environment.

13 FZG Gearboxes Lubricated with Different Formulations of Polyalphaolefin Wind Turbine Gear Oils (August 2016)

In order to analyze the different gear oils suitable for the lubrication of wind turbine gearboxes, five fully formulated ISO VG 320 gear oils were selected. In between the selected gear oils, four PAO base oils can be found: PAOR, PAOM, PAOC and PAOX. A mineral-based oil (MINR) was also included as reference.

14 Influential Criteria on the Optimization of a Gearbox, with Application to an Automatic Transmission (September 2018)

In the design of an automatic transmission gearbox, the variation of one parameter can result in different system performances due to the strong interdependencies among all components. For given transmission ratios, component lifetimes and safeties, or space restrictions, improvements in efficiency, noise, and weight can be achieved.

15 Documentation of Gearbox Reliability - An Upcoming Demand (June 2019)

The proof of the reliability of a gear drive is now an additional requirement. In Europe, the acceptance authorities for wind turbines are requesting a system reliability proof from gearbox manufacturers. The AGMA committee reviewing the AGMA 6006 standard for wind turbines is considering adding a chapter about design for reliability. However, reliability considerations are not new; NASA, for example, was in the 1980s using reliability concepts for gear drives.

16 Thermal Analysis and Optimization of Gearboxes by Simulation (December 2018)

With the increasing mechanical power capacity of gearboxes, the thermal power limit tends to become the limiting factor. To achieve a balanced system, the gear unit needs extra cooling. Using a fan that is mounted to a fast rotating shaft is a common solution. For this solution an optimal design is investigated.

17 High-Capacity Bearings Carry the Load for Chinese Gearbox Manufacturer (December 2008)

Th e signing of a contract for more than 5,000 sets of SKF’s latest high-capacity cylindrical roller bearings (HCCRB) for wind turbines will impart added load-carrying capacity, more reliability and longer life to the Nanjing Gear Company’s (NGC) line of gearboxes for wind generation applications.

18 How to Determine the MTBF of Gearboxes (April 2008)

Mean Time Between Failures is a very frequent and broadly used reliability measure of components, systems and devices used mainly in conjunction with electrical and electronic equipment.

19 Thrust Cone Bearings Provide Increased Efficiency for Helical Gear Units at Moderate Speed Levels (June 2018)

Thrust cone bearings are an elegant option to handle the axial forces generated by the torque transmission in helical-toothed gear stages. They have proven as an efficient and reliable bearing concept for integrally geared compressors but are nearly unknown in other fields of gearbox engineering. The presented investigations consider three aspects which appear relevant to extend the field of possible applications for thrust cones towards gearboxes constructed with roller bearings.

20 Two-stage Helical Bevel Gearing (February 2016)

Gearing is an essential component in conveyors. The material handling industry appears divided between those who favor high-end three-stage helical bevel gearboxes and those who rely on less expensive worm gearing. But there’s an often over-looked alternative, the two-stage helical bevel gearbox.

21 How Green is Your Gearbox (February 2009)

Rising energy costs and concerns about global warming are at the forefront of today’s news. Turn to local or national TV programming, browse the internet or read the paper and one can find numerous stories about the seemingly irreversible energy costs and the subsequent impact that these costs have on simply doing business. As a result, we as individuals are becoming increasingly aware of the cost of energy and we are being introduced to a variety of methods and/or products that will minimize the impact of these costs.

22 Considering Energy-Efficient Motors: Don't Forget the Gearbox (February 2013)

The mechanical components of your drive system play a major role in overall system efficiency. Don't cut corners.

23 Musical Gearboxes (October 2013)

Dave Soma, the mechanical supervisor at Leland Olds Station, a coal-fired power plant near Stanton, North Dakota, says he and his maintenance team care deeply about keeping the plant running and providing people electricity, especially in the dead of winter.

24 Reliability Safeguarding for an 8 MW Wind Energy Gearbox in Serial Production (December 2019)

Prototype and Process Development Ensuring Stable Quality at the Highest Level

25 Gearbox Bearing Service Life: A Matter of Mastering Many Design Parameters (April 2012)

The availability of high-strength shaft materials, in combination with bearings with high carrying capacity, allows use of slimmer shafts. However, the modulus of elasticity remains the same, so seat design for bearings and gears must be given close attention.

26 The Modified Life Rating of Rolling Bearings: A Criterion for Gearbox Design and Reliability Optimization (March 2015)

Engineers typically learn that the bearing L10 life can be estimated using the so called “C/P method” — or the “basic rating life” of the bearing, a method rooted in the 1940s. Major developments have since led to the “modified rating life,” released in ISO 281:2007, which includes the aiso life modification factor. In this paper a succession of equations used for bearing life ratings are reviewed, and current bearing life rating practices are discussed in detail. It is shown that — despite the introduction more than 30 years ago of the adjustment factor of the basic rating life, and the standardization in 2007 of the aiso modification factor — use of these improved calculation methods are not practiced by all engineers. Indeed — many continue referring to the old model as a way of seeking compliance with existing, established practices.

27 Gear Drive Selection Process for the Parcel Handling Industry (August 2011)

This article is designed to help describe the selection process of a reducer to be used in the parcel handling industry. It will go over the different applications for which gearboxes are used throughout parcel handling facilities such as UPS, FedEx and DHL.

28 CFD Simulation of Geared Transmissions with Injection Lubrication (August 2019)

In this study, a finite volume CFD simulation model of a single-stage injection-lubricated test gearbox was applied to investigate its oil flow and no-load power loss. The results provide physically plausible information on the oil supply and its distribution.

29 A Model for Predicting Churning Losses in Planetary Gears (September 2019)

In the general context of the reduction of energy consumption and polluting emissions, gearbox efficiency has become a major issue.

30 General Modeling Method of Power Losses in Transmission with Parameter Identification (October 2019)

In this paper, the models for different power loss sources in transmissions from literature are applied and compared, which form the two methods - ISO 14179-2 and the joint model to estimate the power losses in a transmission. A 2-speed transmission in an electric vehicle is used as a case study to compare the two methods and validate them with experimental data.

31 The Consistency Game (October 2018)

A Look at Gear & Gear Drive Lubrication Performance Improvements

32 Help Wanted (September 2020)

Options available for those looking for safe, online/in-person gear knowledge.

33 Trends in Industrial Gear Oils (April 2013)

With today's smaller, hotter - and overloaded - machinery, specifying the correct lubricant is vital.

34 A Little Peace of Mind (June 2020)

Condition Monitoring Technology Evolves for Gear Drives, Gearmotors and Gearboxes. Here's a look at what some leading manufacturers are offering.

35 Dynamic Performance (April 2020)

PTE Examines Gearmotor and Gear Drive Technology

36 NORD Gear Offers Drive Solutions for Intelligent Brewing (September 2019)

Worm, bevel, and parallel shaft gear units were installed at two breweries to provide the necessary process control.

37 The Future of E-Mobility (October 2018)

Schaeffler Touts System Solutions and Electrification Advancements at Detroit Symposium

38 Gear Fault Diagnosis by Motor Current Analysis: Application to Industrial Cases (February 2015)

The use of motor current signature analysis (MCSA) for motor fault detection — such as a broken rotor bar — is now well established. However, detection of mechanical faults related to the driven system remains a more challenging task. Recently there has been a growing interest for detection of gear faults by MCSA. Advantages and drawbacks of these MCSA-type techniques are presented and discussed on a few industrial cases.

39 Space Shuttle Rudder-Speed Brake Actuator (October 2015)

The U.S. Space Shuttle fleet was originally intended to have a life of 100 flights for each vehicle, lasting over a 10-year period, with minimal scheduled maintenance or inspection. The first space shuttle flight was that of the Space Shuttle Columbia (OV-102), launched April 12, 1981. The disaster that destroyed Columbia occurred on its 28th flight, February 1, 2003, nearly 22 years after its first launch.

40 Gear Lubrication: Long-Term Protection for Wind Turbines (April 2014)

The chemical and physical properties of gear oils may change, depending - more or less - upon their formulation and the environmental conditions under which they are used. This is why - after three years of use in a wind turbine - a gear oil was examined to determine if indeed changes were evident and if the protection of the gears and rolling bearings still met the same requirements as would be expected of fresh oil. Our findings revealed that the existing gear oil - as well as its ability to protect the gears and rolling bearings - had degraded very little compared to fresh oil.

41 Designing for Static and Dynamic Loading of a Gear Reducer Housing with FEA (February 2010)

A recent trend has been a movement to more user-friendly products in the mechanical power transmission industry. A good example of such a product is a high-horsepower, right angle, shaft-mounted drive designed to minimize installation efforts. Commonly referred to as an alignment-free type, it allows the drive package mounting to be quicker, more cost effective and require less expertise during installation. This facilitates the use of the drive in applications such as underground mining, where there is little room to maneuver parts. The most common application for the alignment-free style drive is for powering bulk material handling belt conveyors.

42 Rolling-Element Bearing Analysis (June 2013)

This article describes how more sophisticated modeling techniques allow the latest software to identify design issues with bearings, shafts, gears and complicated multi-body systems.

43 Up in the Air - Aerospace Gears (April 2013)

Volatile aerospace market keeps gear manufacturers guessing.

44 Effect of Assembly Errors in Back-to-Back Gear Efficiency Testing (December 2015)

As gear efficiency is improved in small steps, it is important to be able to distinguish actual improvements from scatter that can occur while testing. An FZG back-to-back gear test rig was used to investigate how the assembly and re-assembly of the same test setup affects the measurements. A spread in torque loss between one assembly and another of the same test setup were observed. Rig conditions also affected the spread in input torque. With knowledge of how the spread in torque loss varies due to assembly, test results could be distinguished between changes due to assembly and actual differences between tests.

45 Gears and Gear Drives Product Focus (February 2013)

Our product focus includes the latest technology in gears and gear drives from the leading manufacturers.

46 Electrical Stress and Parasitic Currents in Machine Elements of Drivetrains with Voltage Source Inverters (August 2018)

Modern drivetrains with voltage-source inverters not only offer advantages like, for example, variable speed operation, increased efficiency and higher dynamics, but also an increase in failures caused by induced parasitic currents.

47 Stable and Streamlined (September 2018)

Gear drives focus on longevity, quality and customization.

48 Product News (March 2018)

The complete Product News section from the March 2018 issue of Power Transmission Engineering.

49 U.S. Wind Power Blowing Hot as New Installations Flourish (October 2017)

A look at recent installations, plus interviews with some wind industry insiders.

50 Calendar (February 2017)

The complete technical calendar from the February 2017 issue of Power Transmission Engineering.

51 Gear Design Effects on Performance of High-Speed Helical Geartrains as Used in Aerospace Drive Systems (March 2016)

The performance of high-speed helical geartrains is of particular importance for tiltrotor aircraft drive systems. These drive systems are used to provide speed reduction/torque multiplication from the gas turbine output shaft and provide the necessary offset between these parallel shafts in the aircraft. Four different design configurations have been tested in the NASA Glenn Research Center, High-Speed Helical Geartrain Test Facility. The design configurations included the current aircraft design, current design with isotropic superfinished gear surfaces, double-helical design (inward and outward pumping), increased pitch (finer teeth), and an increased helix angle. All designs were tested at multiple input shaft speeds (up to 15,000 rpm) and applied power (up to 5,000 hp). Also two lubrication, system-related, variables were tested: oil inlet temperature (160–250° F) and lubricating jet pressure (60–80 psig). Experimental data recorded from these tests included power loss of the helical system under study, the temperature increase of the lubricant from inlet to outlet of the drive system and fling-off temperatures (radially and axially). Also, all gear systems were tested with and without shrouds around the gears.

52 An Open-And-Shut Case: Greases for Gear Applications (September 2016)

For the lubrication of open gear drives used in different industrial applications such as cement and coal mills, rotary furnaces, or where the sealing conditions are difficult, semi-fluid greases are often used in preference to fluid oils. For girth gear applications the greases are used with a splash or spray lubrication system. The selection of such greases influences pitting lifetime and the load-carrying capacity of the gears, as well as wear behavior

53 High-Performance Industrial Gear Lubricants for Optimum Reliability (October 2010)

In recent years, gearbox technology has advanced and original equipment manufacturers (OEMs) have specified required gear oils to meet the lubrication requirements of these new designs. Modern gearboxes operate under severe conditions while maintaining their reliability to ensure end-user productivity. The latest generation of industrial gear lubricants can provide enhanced performance—even under extreme operating conditions—for optimal reliability and reduced cost of operation.

54 Power With Precision (February 2009)

Can direct drive technology improve your bottom line? Manufacturers relying upon drive systems in their production process have long sought ways to improve gearbox efficiency. While a gearbox-driven system has been the mainstay for manufacturers, it has also been, among other things, the source of frequent breakdowns, expensive line stoppages and increasingly costly maintenance.

55 Have a Pump, Motor, Generator, Turbine, Compressor or Gearbox - There is a Bearing for That! (October 2012)

Waukesha Bearings is known internationally for its capabilities, technology, size and application experience in the rotating (turbo) equipment industry. Following is a brief selection guide intended to assist engineers, specifiers, integrators and others in choosing the right bearing—and bearing technology—for the application.

56 Familiar Goals, New Solutions (October 2017)

Gearmotor manufacturers find new ways to push the envelope. (With Sidebar on new alternative to planetary gearboxes)

57 Lightweight, Highly Efficient Drive System (February 2017)

This paper presents a joint project conducted by Ashwoods Electric Motors and Oerlikon Fairfield that uses planetary drives with an integrated electric motor. Current solutions used in production of off-highway vehicles rely upon large, heavy and inefficient brushed DC or induction motors, coupled to a planetary gearbox. This presents a number of challenges to the vehicle designers such as: limited vehicle range, limited space around the motor/drivetrain, and motor durability. The proposed integrated system utilizes an Oerlikon Fairfield Torque Hub, widely used in off-highway vehicles, and the Ashwoods first-to-market, interior permanent magnet motor. How these products are integrated, i.e. incorporating a brake solution, represents a market-changing product. Using interior permanent magnet (IPM) technology in the motor design means the motor can be up to 70% lighter, 70% smaller and 20% more efficient than traditional motors used in off-highway traction applications.

58 Guidelines for Bearing Seals (October 2016)

Equipment downtime and reduced component life are a few of the consequences — and potential costs — of using the wrong seals on many types of industrial equipment including pump bearing frames, electric motors, fans, pillow blocks, gearboxes and more. However, if correctly specified and installed, seals provide effective barriers that both retain lubricants as well as protect against water, corrosion, debris and other contaminants.

59 Understanding the Dynamic Influences of Gear Oils and Radial Shaft Seals (February 2018)

Sustainability is becoming one of the most important aspects within the power transmission business. Users demand low-maintenance drive systems with as little disruption as possible, and expect lifetimes of more than 10,000 hours. Approximately 40 percent of long-term gearbox leakages can be traced back to poor interaction between the radial shaft seal (RSS) and the lubricant. Thus, it becomes essential to analyze the tribological system as a whole, which includes the gear oil, seal grease (if required), elastomer material and design, and the shaft.

60 It's a Jungle Out There (April 2018)

Harsh environments and saltwater properties tend to make it difficult for motors, gearboxes and engines to perform consistently at a high level.

61 Leading through Crisis (April 2020)

Manufacturers are awesome. Over the past month, we've talked to a lot of manufacturers of gears, bearings, motors, gearboxes, couplings and other mechanical power transmission components. Despite the challenges brought about by the COVID-19 pandemic and the current economic crisis, they've been universally positive and remarkably confident about their current operations and ability to continue through the crisis and after.

62 Computing Gear Sliding Losses (February 2020)

As concerns surrounding the environmental impact of fossil fuels continue to grow, so does the need to produce vehicles with higher overall efficiency. The importance of enhanced vehicles has spurred drivetrain component manufacturers to study every aspect of efficiency loss in their products. The gearbox is a key contributor to the overall drivetrain efficiency.

63 FEM Analysis of the Load Distribution over the Face Width of Helical Gear Pairs Considering Deviations, Misalignments and Deformations (August 2020)

The load carrying capacity of spur gears may be calculated by ISO 6336 using influence factors. The face load factor considers the impact of the non-uniform load distribution over the face width. Even if the gears had perfect geometry, the load would not distribute uniformly along the contact lines. The face load factor depends on deformations of all parts of the containing gearbox and mainly of the teeth, gears and shafts as well as on manufacturing and assembly deviations.

64 MDA, IANA and IMTS 2016 (August 2016)

Where to find the gearboxes, bearings, couplings and other components.

65 Run Like the Wind - Windpower Conference Heads to Chicago (April 2009)

Wind is the talk of the town. It has become especially relevant to the power transmission community where bearings, gears, couplings, motors and gearboxes are providing the equipment for this thriving alternative energy industry. It comes as no surprise that the Windpower 2009 Conference and Exhibition, arriving in Chicago from May 4–7, will be the largest gathering of wind energy professionals and technologies to date.

66 Safety Elements for Mechanical Torque Limiters (June 2010)

The world of high horsepower drives often calls for mechanical design to be approached from different perspectives. As motors, gearboxes and machines increase in size, power density can become disproportionate from one driveline component to the next, emphasizing the need for more rugged, robust and compact equipment.

67 Total System Efficiency (February 2010)

Much of the industrial energy being consumed by systems is wasted through inefficiency. For this article, a system will be defined as the following components working together: electrical input power, variable frequency drives, induction motors, gearboxes and transmission elements (chains, belts, etc.).

68 Alloying Strategy Boosts Powertrain Performance (June 2013)

The development of a new, gas-carburized gear steel, necessitated by a customer-driven specification, has not only increased the power density in an existing gearbox design, but has done so without requiring any significant change to production processes or heat treatment equipment.

69 Helical Gearing Offers Green Alternative (October 2010)

Upgrading to gearboxes with helical gearing can save on energy, maintenance and landfill space.

70 Influence of Gear Loads on Spline Couplings (February 2014)

Involute splines are commonly used in gearboxes to connect gears and shafts, especially when high torque is transmitted through the coupling. The load is shared among multiple teeth around the coupling circumference, resulting in higher load capacity than a conventional single key. However, the total load is not equally shared among all spline teeth, mainly because of pitch deviations resulting from the manufacturing process. The load distribution along the spline engagement length is also nonuniform because of tooth misalignments and shaft torsional effects. This paper presents an investigation of the influence of spur gear loads on the load distribution of spline teeth.

71 High Gear Ratio Epicyclic Drives (June 2016)

Referencing a June 2014 Article, “High Gear Ratio Epicyclic Drives Analysis,” by Dr. Alex Kapelevich: I have designed a small compound epicyclic gearbox with common planets. Sun = 10 teeth Planet = 14 teeth Ring Gear stationary = 38 teeth Ring gear output = 41 teeth profile shifted onto a 38 tooth pitch diameter. Carriers are simply cages for the planet alignment and location. According to your article, and according to my calculations and the prototype I have built, my inputto- output ratio is a reduction of 65.6:1. I am using a ~ VG1 viscosity grease and Nylatron materials for the gears and carriers.

72 Preventing Roller Bearing Failure (December 2015)

I’m building a custom gearbox with 7075 T-6 spur gears, and I’m concerned that aluminum flakes will enter the races on the roller bearings (SKF 2307) and cause premature failure. So my question is — should I place an oil seal on the shaft first to protect the bearing — or is this an unfounded concern and I should mount the seal in the typical manner outside the bearing? Or both? Or go with a sealed bearing? I’m confused and could use your expertise, please.

73 Is Splash Lubrication Compatible with Efficient Gear Units for High-Speed Applications (October 2015)

A thermo-mechanical model of a splash lubricated one-stage gear unit is presented. This system corresponds to a first step towards the design of a hybrid vehicle gearbox that can operate up to 40,000 rpm on its primary shaft. The numerical model is based on the thermal network method and takes into account power losses due to teeth friction, rolling-elements bearings and oil churning. Some calculations underline that oil churning causes a high amount of power loss. A simple method to reduce this source of power losses is presented, and its influence on the gear unit efficiency and its thermal capacity is computed.

74 Leaky Shaft Seals (June 2016)

conveying system on the varnishing line for a manufacturer of high-end kitchen cabinets were leaking. Oil was dripping on the cabinet parts — ruining the finish. Why were half of the gearboxes leaking?

News Items About gearbox

1 Stober Offers PS Two Speed Gearbox (November 3, 2016)
The Maysville, Kentucky gearbox manufacturer has introduced a new gearbox for the machine tool industry. The PS Two Speed gearbox featur...

2 Exsys Tool Expands Planetary Gearbox Range (July 11, 2018)
Exsys Tool, Inc. has expanded its line of Eppinger high-precision industrial gearboxes to include planetary-type gearboxes. The planeta...

3 GAM Offers Robotic Cycloidal Gearboxes (November 20, 2018)
GAM announces the release of the new GCL cycloidal gearboxes. The new gearboxes provide high precision and rigidity for horizontal and ...

4 Varvel Produces Custom Gearboxes in addition to Standard Offerings (February 16, 2018)
The Varvel Group can produce custom gearboxes to satisfy specific needs including a gearbox developed for an American customer that pro...

5 Gearbox and Gear Motor Market Set for Steady Growth (September 18, 2017)
The global gearboxes and gear motors market is witnessing steady growth, augmented by the adoption of more energy-efficient gearboxes and...

6 Exsys Expands Eppinger Hypoid Gearbox Offerings (November 2, 2017)
Exsys Tool, Inc. has further expanded its Eppinger gearbox offerings to include the HT-type hypoid gearboxes that feature compact, robust...

7 Stober Drives Expands Gearbox Series (June 16, 2014)
Stober Drives, Inc. is expanding its KSS stainless steel gearbox series by adding ratios that allow customers to use smaller reducers at lower speeds. The “K” series is a right-angle, helical bevel gearbox...

8 GAM Releases Zero-Backlash Robotic Gearboxes (September 4, 2018)
GAM announces the release of the new GPL zero-backlash planetary gearboxes. The new gearboxes provide high precision and rigidity for h...

9 GAM Introduces GSL Robotic Strain Wave Gearboxes (April 30, 2020)
GAM announces the release of the new GSL series of strain wave gearboxes. The new gearboxes provide zero-backlash and high torque in a sm...

10 Pittman Motors Expands PLG Planetary Gearbox Offering (March 30, 2015)
Pittman Motors recently expanded its gearbox offerings with the introduction of PLG24, PLG42K, PLG42S, PLG52, and PLG63 planetary gearbox...

11 SKF’s New Cylindrical Roller Bearings Extend Wind Turbine Gearbox Life (April 11, 2006)
New SKF high-capacity cylindrical roller bearings for wind turbine gearboxes have been engineered to promote longer gearbox service life...

12 SKF’s New Cylindrical Roller Bearings Extend Gearbox Life (April 9, 2006)
New SKF high-capacity cylindrical roller bearings for wind turbine gearboxes have been engineered to promote longer gearbox service life...

13 Romax Releases Gearbox Design Package (October 26, 2012)
Romax Technology, a gearbox, bearing and driveline engineering specialist, has launched a new design software package that will increase ...

14 Gearbox and Geared Motor Shipments Up in 2012 (October 9, 2012)
Precision gearboxes and geared motor shipments were 69 percent higher in 2011 than in 2009 because of increased manufacturing output in 2...

15 Romax Introduces Gearbox Concept Analysis (November 9, 2011)
Romax Technology recently announced the availability of release R14.0 of the precision bearing, gearbox and driveline simulation and anal...

16 Liebherr Introduces Plug-In Gearbox Series (March 21, 2012)
In the first half of 2011 Liebherr successfully introduced a new series-produced range of slewing gearboxes. Now, the company h...

17 Wittenstein Welcomes New Generation of Inline Gearboxes (April 30, 2012)
Experience the faces of a new generation of gearboxes with the LP+ Generation 3 from Wittenstein. This new precision gearhead sets new st...

18 Exsys to Showcase New Gearbox Solutions at WESTEC (July 23, 2015)
At WESTEC 2015, Exsys Tool, Inc. will showcase advanced manufacturing technologies in booth 1919. Amongst other products, new gearbox sol...

19 AutomationDirect Offers Stepper Gearboxes (February 12, 2014)
AutomationDirect’s new SureGear PGCN series of stepper gearboxes is a suitable choice for stepper and other motion control applicat...

20 NKE Offers Rolling Bearings for Gearboxes (June 10, 2014)
NKE Austria offers rolling bearings for industrial gearboxes that meet the efficiency and reliability requirements of a wide range of sectors, such as general machinery, mining, material handling systems and heavy machinery...

21 ZF Opens First U.S. Plant for Wind Turbine Gearboxes (October 4, 2011)
ZF Friedrichshafen AG has opened a plant for the production of wind turbine gearboxes in Gainesville near Atlanta, Georgia. As of 2012, t...

22 Bonfiglioli Announces New TQK Series Right-Angle Precision Gearbox (April 6, 2015)
Bonfiglioli recently announced the new TQK series -- Right-Angle Precision Gearbox version. This precision gearbox is complementary to th...

23 MPT Offers Power Dense Parallel Gearbox (December 14, 2012)
Master Power Transmission (MPT) provides enclosed parallel and right angle gearboxes for use in many industrial applications including ma...

24 Groschopp Releases New i-series Planetary Gearboxes (May 6, 2013)
Available in three sizes and multiple gear ratios, Groschopp’s new i-series gearboxes are suitable for applications that have strin...

25 Hygienic Gearbox Meets Food and Pharma Standards (October 7, 2014)
Neugart USA has designed its new HLAE gearbox from the ground up for use in food processing, pharmaceutical and other industries with str...

26 Wittenstein Adds SUMO Sizes to Gearbox Line (July 19, 2011)
Wittenstein has enhanced the range of hypoid planetary gearboxes with the addition of new SUMO sizes to ensure maximum productiv...

27 Renold Gears Assists Tire Manufacturer with Gearbox (February 7, 2008)
Mitas, one of the largest tire manufacturers in the Czech Republic, recently commented on the use of Renold gearboxes for their calendar ...

28 Hansen Delivers First Gearbox from Chinese Facility (April 13, 2009)
Hansen Transmissions announced the delivery of the first gearbox manufactured in the new facility in the Beichen Hi-tech Industrial Park,...

29 Rino Mechanical Components Inc. Launches E-Series Gearboxes (November 14, 2007)
With a recent upgrade to its mechanical tools, Rino Mechanical Components Inc. unveiled its new E-series of gearboxes. The E-series featu...

30 Renold Introduces Interchangeable Range of Gearboxes and Couplings (May 24, 2007)
Renold will exhibit its SMXtra interchangeable range of gearboxes and fluid couplings, for quarrying applications, at the Hillhead Exhibi...

31 Ondrives Manufactures Showcase Gearboxes (April 17, 2006)
Ondrives Ltd. of Chesterfield, U.K., manufactured two gearboxes for a pharmaceutical company’s teaching purposes. According to th...

32 GE Energy Partners with Chinese Co. To Develop Wind Turbine Gearboxes (April 22, 2006)
GE Energy and Nanjing High Speed & Accurate Gear Company (NGC) have agreed to jointly develop gearboxes for GE's 1.5-megawatt wind tu...

33 Excel Gear Designs, Prototypes Navy Gun System Gearboxes (September 10, 2009)
Roscoe, IL-based Excel Gear has transitioned from prototype to production of 38:1 ratio gearboxes designed for positioning the gun mount ...

34 Encoder Ready DC Motors Feature Planetary Gearboxes (July 15, 2010)
Nidal Copal's HG16 series is a RoHS compatible DC motor with planetary gearbox. The 0.63 inch OD (16 mm) DC motor has two axial lengt...

35 Exsys to Present Gearbox Line at CMTS 2015 (August 13, 2015)
Alongside their collection of lathe tools, Exsys Canada will be presenting the line of gearboxes they offer from Eppinger at CMTS 2015 at...

36 Romax Awarded GL Gearbox Design Assessment (August 17, 2011)
Romax Technology has been awarded the GL Renewables (GL) A-Design Assessment for its new range of WT2000 licensed 2 MW gearboxes. Achievi...

37 Baldor Enhances Same-Day Gearbox Assembly Operations (June 17, 2011)
Baldor has enhanced its fast turnaround gearbox assembly operation, which now has access to a large extensively-equipped machine shop, to...

38 Gearboxes Offer Range of Drive Requirements (May 6, 2011)
A line of totally sealed, precision right angle gearboxes that feature robust construction and are maintenance-free for a wide range of d...

39 Wittenstein Offers Gearbox for Harsh Environments (September 29, 2010)
When environmental conditions demand a higher level of protection, the alpha SG stainless steel gearbox from Wittenstein offers a solutio...

40 Excel Gear Launches Gear/Gearbox Optimization Software (October 21, 2010)
Excel-Lent gear/gearbox design and analysis software has been developed by Excel Gear, Inc. and written in Visual Basic.Net. This softwar...

41 KISSsoft Offers Gearbox Variant Calculations (September 1, 2011)
With KISSsys, gearbox variants can now be calculated very efficiently (module KS1). In contrast to the GPK-models, where within the fixed...

42 Romax InSight Supports Eurus Energy America with the Biggest Gearbox Re-Engineering and Refurbishment Project (September 10, 2015)
Romax Technology recently announced that it will be supporting Eurus Energy America (EEA) with its largest ever gearbox re-engineering an...

43 Neugart Right-Angle Gearbox Features Compact and Flexible Mechanical Design (February 5, 2018)
The WPSFN from Neugart is the latest in the company’s precision right-angle planetary gearboxes. Thanks to its standard flange in...

44 FVA REXS Designed to Establish Industry-Wide Standard for Exchanging Gearbox Data (February 15, 2018)
The software landscape in the field of gearbox development, simulation, and production is extremely diverse today. Although these program...

45 Dana Offers Axle/Gearbox Combination for Drum Rollers (January 25, 2018)
Dana Incorporated has announced a new, optimized axle/gearbox combination for small- and medium-sized single drum rollers that enables or...

46 Varvel Offers RS and RT Series Worm Gearboxes (January 19, 2018)
The Varvel RS and RT series worm gearboxes demonstrate the company’s versatility and innovation for a variety of demanding applicat...

47 Renold Gears Designs Heavy-Duty Gearbox Solution for Log Washer Manufacturer (August 14, 2017)
Renold Gears has designed a heavy-duty, custom gearbox solution for a manufacturer of a special type of coarse material washers known as ...

48 Nord Drivesystems Expands MaxxDrive Gearbox Line (January 9, 2018)
If you need a dependable, high performance gearbox able to handle the most demanding bulk material handling applications, cement and stee...

49 Electromate Offers High Performance Servo Gearbox (May 3, 2018)
The SPH inline planetary gearbox is GAM’s latest solution for today’s demanding motion control challenges. With helical gea...

50 Varvel Releases FRP680 Gearbox Catalog (May 29, 2018)
Varvel recently published a new product catalog for the FRP680 gearbox, which is specially designed to drive the ground-level linear fe...

51 KISSsoft Offers Multiple Solutions for Gearbox Software (January 22, 2020)
Whether a gearbox is to be produced in-house or outsourced is still a central question for many companies. To make the right and quick de...

52 Neugart Extends Planetary Gearbox Series (June 18, 2020)
Neugart is extending its portfolio of planetary gearboxes, especially for rack and pinion drives, with an additional option for a fitted ...

53 Dana Introduces Range of Jack-up Gearboxes for Offshore Applications (December 10, 2019)
Dana Incorporated has announced the introduction of a complete range of Fairfield jack-up gearboxes for offshore applications, as well as...

54 Zero-Max Gearboxes Provide High Torsional Stiffness Using CD Couplings (July 29, 2019)
Flanged gearboxes are ideally suited for CD Couplings from Zero-Max. They provide high torsional stiffness in precision applications with...

55 Atlanta Drive Systems Offers Range of Stainless Steel Washdown Gearboxes (May 2, 2019)
Atlanta Drive Systems, Inc. is pleased to announce a new range of stainless steel washdown gearboxes, perfect for use in demanding appl...

56 Varvel FRP680 Gearbox Maximizes Flexibility and Customization (May 26, 2017)
Varvel recently presented its new FRP680 gearbox, developed for use in the farming industry and especially for the international poultry ...

57 Drive Lines Extends Bevel Gearbox Range (September 14, 2017)
A new size, the P-65, has been added to the Graessner PowerGear P range of bevel gearboxes available from Bedford-based Drive Lines. Bein...

58 AutomationDirect Adds Helical Gearboxes to IronHorse Line (June 21, 2016)
AutomationDirect’s IronHorse line of motor products now includes helical gearboxes which provide quiet startup and smooth operation...

59 Boston Gear Introduces Gearbox Video Series (May 12, 2016)
A series of informative Boston Gear speed reducer videos have been produced to help reduce gearbox failures and premature wear. Topics in...

60 New KISSsoft Feature Considers Compliance and Influence on Load Distribution in the Gearbox (November 4, 2015)
In the static system analysis, a new feature considers housing compliance and influence on load distribution in the gearbox as well as lo...

61 Neugart Introduces Latest Compact Right-Angle Gearbox (November 25, 2016)
Neugart USA introduces its new compact right-angle, flange-mounted WPLFE gearbox for applications with tight space constraints and powerf...

62 Drive Lines Servo Gearboxes Offer Versatility for Critical Applications (July 15, 2016)
Servo gearboxes are likely to be specified in an incredibly wide range of applications, from packaging machines to robots, medical equipm...

63 Vectron's Viscosity Sensor Detects Oil Change in Gearbox (May 29, 2007)
The low shear ViSmartâ„¢ viscosity sensor from Vectron International was recently used to collect real-time viscosity data in an oil-aging ...

64 FVA Offers Basics of Gearbox Design Online Seminar (July 27, 2020)
FVA GmbH presents a live online seminar on "Basics of Gearbox Design: Requirements, Concept and Design," on November 13, 2020 f...

65 Comet Announces Gearbox Simulation Webinar (December 29, 2015)
Comet Solutions, Inc.announces its upcoming Gearbox SimApp webinar. Attendees will learn how Simulation Applications are empowering&...

66 KISSsoft Offers Gearbox Calculation Courses (February 26, 2016)
KISSsoft software includes internationally recognized calculation standards and various design and optimization options, based on the exp...

67 Comet's New Cloud-Based Gearbox Durability SimApp Will Provide Many Automated Processes (October 13, 2015)
Comet Solutions, Inc. recently announced a program in support of Gearbox design and manufacturing. The Comet Gearbox solution, consisting...

68 KISSsoft Offers Enhanced Heating Calculation for Gearboxes (September 3, 2015)
The efficiency calculation and thermal analysis according to ISO/TR 14179 (module KS2) has been extended with several useful functionalit...

69 Dana Opens Gearbox Repair and Service Center in Slidell, Louisiana (February 5, 2020)
Dana Incorporated has announced that it has opened the doors to a nearly 32,000 square-foot (3,000 square-meter) facility in Slidell, Lou...

70 Varvel Focuses on High Modular Gearboxes (February 1, 2019)
The need to keep customers in all parts of the world constantly supplied while minimizing stock in distributors' warehouses, and a ...

71 ArvinMeritor Focuses on Automated Manual Gearboxes (April 15, 2006)
ArvinMeritor announced a decision to place greater emphasis on the sales and marketing of the FreedomLine automated manual transmission b...

72 Hansen Transmissions Establishes Gearbox Facility in India (February 12, 2007)
Hansen Transmissions International announced plans to invest 170 million euros for a wind turbine production plant. The facility will sup...

73 AGMA Releases Standard for Wind Turbine Gearboxes (March 20, 2020)
The AGMA Technical Division is pleased to announce the publication of the following new AGMA publication: ANSI/AGMA 6006-B20, Standard fo...

74 GAM Introduces SPH Flange Planetary Gearbox (March 4, 2016)
GAM, a manufacturer of high precision gear reducers, servo couplings, and linear mounting kits, introduces the SPH Flange planetary gearb...

75 Gearbox Express to Open Doors Early 2012 (November 7, 2011)
Three power transmission and wind energy veterans have banded together to create Gearbox Express, an independent business focusing on the...

76 Viscotherm Rotodiff Gearbox Tester Lowers Energy Costs for Back-to-Back Gearbox Test Rigs (December 29, 2016)
Viscotherm's Rotodiff solution enables back-to-back test rigs to run with a fraction of the turbine's power while allowing to tes...

77 Hansen Extends Gearbox Product Offering (April 25, 2012)
Industrial gear unit specialist Hansen Industrial Transmissions (HIT), acquired by Sumitomo Heavy Industries (SHI) Ltd. in March 2011, re...

78 DSD Contributes to Magnetic Gearbox for Hydropower Applications (April 14, 2017)
Driveline engineering specialist, Drive System Design (DSD), is contributing to two innovative hydropower projects in the United States b...

79 Poggi Collaborates with University of Bologna on Right Angle Gearbox Test Bench (September 22, 2020)
In collaboration with the University of Bologna, Poggi trasmissioni meccaniche s.p.a. has designed an innovative test bench that will all...

80 Drive Lines Gearboxes Bring Flexibility to Machine Tools (May 23, 2016)
Whether cutting, boring, grinding or shearing, modern machine tools have to meet what at first sight appear to be conflicting operational...

81 GWJ Technology Launches New Version of System Calculation for Gearboxes (March 2, 2015)
GWJ Technology GmbH, a manufacturer of calculation software for machine elements and gears, recently launched a new version of its system...

82 Bosch Rexroth Optimizes Wind Turbine Gearboxes (August 27, 2012)
The competitive pressure as well as the pricing pressure in the wind energy industry is mounting. If the sector wants to continue to expa...

83 Crouzet Introduces Gearbox Series (November 19, 2010)
Crouzet North America, a company of Custom Sensors & Technologies, has recently introduced the new GDR1 and GDR2 Gearbox Series featu...

84 Gearbox Express Opens 75,000-Square-Foot Wisconsin Facility (May 9, 2016)
Gearbox Express (GBX) recently celebrated the official grand opening of its new 75,000-square-foot facility in Mukwonago, Wisconsin. &qu...

85 Kluber Lubrication Offers Fully-Synthetic Oil for Rail Gearboxes (June 21, 2018)
Klüber Lubrication, a worldwide manufacturer of specialty lubricants, offers Klübersynth GE 4 80 W 140, a fully synthetic hig...