CTI Shanghai

Articles About CTI Shanghai

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1 Industry News (September 2016)

Latest News from around the Industry

2 Transmissions in Transition (June 2015)

Experts gathered at the 9th CTI Symposium to discuss the challenges of reducing noise, improving energy efficiency and meeting the changing demands of the marketplace

3 Industry News (June 2015)

News from Around the Industry

4 The Science Fiction Addiction (February 2015)

It seems preposterous in the whimsical, wireless world of today, but in 1977 cinema’s greatest visioneers came together and decided the pinnacle of robotic technology in the future would be a motorized trash can.

5 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.

6 Critical Factors for Proper Product Selection and Sizing (August 2014)

"Well begun is half done," a quote that most reference materials attribute to Aristotle, certainly applies when selecting mechanical power transmission products. A selection process that is well thought out at the start can ensure that the product selected will be properly sized and appropriate to the application at hand.

7 The Importance of Thermal Protection for Torque Motors (August 2015)

When talking about high-end machining or manufacturing applications that include direct-drive technology, one of the key advantages of utilizing this particular transmission method is its endurance. Because of the very nature of direct-drive motors they are able to operate at peak performance levels indefinitely — without any kind of wear or aging — as long as the motor isn’t pushed past its capacity. Unfortunately, because this isn’t a perfect world, unexpected things can happen which can cause the motor to overheat. Whether the heat source is due to a parameter being input incorrectly, or an unexpected external force causing more resistance than expected — it is important to have certain forms of thermal protection in place. Since torque motors are built in such a way that they cannot be repaired and yet maintain their efficiency, it is vital to prevent any overheating — thus precluding the need to purchase a new one.

8 Bearing the Brunt of Earthquakes (December 2016)

America suffers $4.4 billion in losses due to earthquakes every year. While that's a drop in the bucket for our $16 trillion plus GDP, it's still a substantial amount of money, and some people are working to lessen those losses. One group is Earthquake Protection Systems (EPS), a company that is designing bearings to better protect buildings from earthquake damage.

9 The One-Stop Shop for Automatic, HEV and EV Drives (April 2018)

CTI Symposium USA Examines North American Transmission Market Strategies

10 A Mechanical Healthcare Plan (June 2018)

Motor Operation Gets Big Boost from Smart Technology (Here's How to Take Advantage)

11 How to Select a DC Motor: Coreless and Iron Core Brushed DC Motors (June 2017)

DC motors possess linear relationships that allow for very predictable operation. For instance, if enough voltage is applied across the terminals of a DC motor, the output shaft will spin at a rate proportional to that applied voltage. You can take the ratio of the applied voltage over the rated voltage and multiply that number by the no load speed and get the running speed.

12 Industry News (February 2017)

The complete Industry News section from the February 2017 issue of PTE.

13 Hands-On Hydraulics and Pneumatics (February 2017)

Action Challenge Introduces Students to Fluid Power Industry in the latest STEM educational effort from the National Fluid Power Association.

14 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.

15 CTI Symposium Raises the Bar on Transmission Technology (June 2014)

The 8th International CTI Symposium on Automotive Transmissions, HEV and EV Drives took place in Rochester, Michigan from May 12-15. The event kicked off with its popular introductory seminar "Basics and Practice of Automotive Transmissions."

16 Inexpensive Methods to Measure the Performance Characteristics of a Linear Motion Device (December 2013)

This article describes a series of tests that can be performed by the average user, with little experience, and without sophisticated measuring instruments, to quickly determine the most important performance characteristics of linear motion systems.

17 Hardware-Software Synergy Automates Power Plant Data Collection (October 2009)

Robotics and other advanced automation technology systems are viewed as a looming threat to some in the plant maintenance field. Although there is a constant battle for some workers to remain useful while machines are continuously fulfilling more roles on the plant floor, there are those who in turn have found a better use of their newly freed time.

18 Not All Thin-Section Bearings Are Created Equal (February 2011)

American Bearing Manufacturers Association (ABMA) Standard 9 and ISO 281 give equations for calculating the basic dynamic radial load rating for ball bearings. These equations are based on a number of assumptions, many of which are not valid for thin-section bearings. (Thin-section bearings are described in ABMA standard 26.2.) Nevertheless, many thin-section bearing catalogs report load ratings based on these equations. Kaydon has developed a new method for calculating the dynamic radial load rating for thin-section ball bearings. The new method uses the contact stress and the number of stress-cycles-per-revolution to calculate the capacity. The new numbers are based on five years of actual test results. These equations can also be used to calculate the dynamic radial load rating for four-point contact ball bearings, which are not covered in ABMA standard 9 or ISO 281.

19 Facing the Challenges of the Current Hybrid Electric Drivetrain (April 2009)

Presented is a high-phase, order-induction motor drive for use in a series hybrid architecture. This solution overcomes numerous compromises in current hybrid powertrain designs. Notably, it allows for a vehicle that is competitive in terms of performance and cost.

20 Predictive Maintenance - There Is an App for That (June 2013)

Implementing a predictive maintenance (PM) program can be tough. Despite its proven success, many companies have been operating the same way for over 50 years and don’t know where to start. Understanding where to start and where to focus is critical. The intention of this article is to give insight to start and sustain an effective program using today’s technology and devices.

21 DC Motor Protection (June 2013)

The purpose of DC motor protection is to extend a motor's lifespan by protecting it from conditions that can damage the motor's windings--both electrically and mechanically.

22 Boilermakers Announce Bearing Technology Breakthrough (June 2013)

Student research project at Purdue could revolutionize predictive bearing failure.

23 Soft Starters vs. Variable Speed - Or Both (June 2011)

Given that many different hydraulic systems recommend the use of either frequency converters or cyclic control (soft starter technologies), the question must be asked - Which one of these solutions is the most cost-effective in reducing energy consumption and providing the most satisfactory payback time?

24 University Improves Sustainability of HVAC Motors in Platinum LEED Building (April 2012)

A new preventive maintenance program at a leading New England Ivy League university demonstrates how the push for more sustainable "green" building management has led to a growing awareness of a chronic, widespread problem with HVAC motors—electrical bearing damage and failure.

25 How To Use a Hand-Held Micrometer to Measure Miniature and Instrument Ball Bearings (December 2013)

For the most accurate measurements, miniature and instrument ball bearing dimensions should be measured with a calibrated air gauge. A good second option is a calibrated optical comparator. On occasion, it may be necessary to use a calibrated, hand-held micrometer to double-check a measurement or for simple verification while working in the field.

26 The Workhorse of Industry: The Induction Motor (December 2013)

A brief overview of the induction motor, including the basics of construction, performance and variable speed drives.

27 Napoleon Engineering Services: Rigged for Success (December 2013)

For design engineers and purchasing agents alike, bearings can sometimes be like family. Oh, you know - can't live with 'em, can’t live without 'em.

28 Better Long than Short (October 2012)

The glass is at least half-full—and there is no hole in the glass. While fiscal cliff disaster is a possibility, we’re thinking more fiscal pothole.

29 Predictive Motor Maintenance (PdM): Use it or Lose it (Money) (June 2012)

Regardless of where you do business, when discussing, analyzing or worrying about “The Economy” these days, you’re not thinking Main Street - you’re thinking global. With that stipulation, it is also accepted wisdom that quality products and sharp pencils are not enough to be and remain competitive. Accordingly, everyone is looking for an edge, an advantage, in order to beat back - or at least keep up with - the competition.

30 Best Practices for Bearing Protection (June 2014)

For either brand-new motors or those already in service, "best practices" means that informed technicians can make use of the latest diagnostic techniques (vibration analysis, thermography, shaft-voltage testing, etc.) to prevent electrical bearing damage -- either at the very beginning or very quickly thereafter. If done correctly, the work need only be done once.