fluid couplings

Articles About fluid couplings


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1 Fluid Couplings vs VFDs for High Inertia Rotating Driven Loads (September 2017)

As the old adage goes, "There is more than one way to skin a cat." In the early stages of any project, system designers are faced with choices; whether they are designing a new application or retrofitting an old one, they need to determine what is the most efficient, economical and practical way of completing the task at hand. Though there are usually at least two viable means to accomplish the task, the first step is always to review and weigh the merits of each option.

2 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.

3 Getting a Piece of that Sweet Coupling Pie (December 2014)

He was out. Nine years ago, Ross Rivard left the coupling industry for the shimmering new world of luxury automotive components at Lacks Enterprises, where he was immediately enveloped by platinum trim systems and chrome composite wheels. It was glitz and glam and as sparkly clean as the fresh-fromthe-dealership cars his products were embellished onto.

4 The Efficient Drive System (December 2013)

It's a fact that drive systems wouldn't function properly or efficiently without couplings. They quietly go about their business of transferring motion from one drive element to the next. In the PT market today, couplings have the unique challenge of satisfying a variety of customer needs including tighter tolerances, higher speeds and a more versatile selection process.

5 Considering the Mechanical Aspects of ATEX (December 2012)

For the past 30 years or more, designers have paid due diligence to the electrical aspect of hazardous atmosphere equipment design, but have often ignored the mechanical side. In recent years, the mechanical aspects of ATEX design have increasingly come to light. Not only do electrical power transmission products, but also mechanical power transmission products need to comply with the ATEX directive.

6 Sorting Out Flexible Couplings (August 2012)

In most cases, industrial power transmission calls for flexible rather than rigid couplings in order to forgive minor shaft misalignment. For that reason, this article will focus solely on the selection of flexible couplings.

7 Precision Bellows Couplings (March 2015)

Bellows couplings first began to be widely used by machine tool builders in the mid-to-late 20th century. With the advent of CNC technology, machine engineers started looking to improve upon some of the negative influences traditional power transmission couplings can have on a precision rotary / linear motion system.

8 Belts Vs. Couplings (August 2015)

rotary-type blowers? Examples: for motor KW; RPM; temperature; pressure production; lifetime; etc. In other words, how do I choose between belts or couplings?

9 Tailor-Made (August 2017)

The Role of Coupling Technology in Current Developments in Industry

10 Coupling Connection (August 2017)

Couplings and harsh environment use

11 How to Prevent Pulley Slippage (February 2017)

I'm not able to get a good connection between the pulley and shaft in my drive assembly. Could you explain the various ways of connecting a pulley to a shaft to prevent the pulley from slipping?

12 Product News (August 2016)

News about industry products.

13 Case Study: JBJ Techniques and the BLOODHOUND SSC Project (April 2016)

Specialist power transmission supplier JBJ Techniques Limited, of Redhill, Surrey, England were recently contacted by the staff of Bloodhound SSC R&D engineering team to solve a problem on the fuel pump test rig. JBJ Techniques had worked with various team members in the past and this previous experience made JBJ an easy choice to assist with this project. The scope of supply was to produce a suitable drive coupling with a maximum diameter of 160 mm, capable of transmitting 550 Nm @ 10,000 rpm, with as short an assembly as possible, and at the same time be able to accept misalignment within the drivetrain.

14 Electrical and Mechanical Torque Limiting (April 2013)

Q&A: My company manufactures high-speed metal forming machines. We have one application on a feed axis where we are encountering problems with the coupling...

15 Bellows Couplings: Proper Selection for Optimal Performance (February 2009)

For many years bellows couplings have been near the top of the list of flexible coupling choices for high-performance motion systems. Their high torsional stiffness, low moment of inertia and minimal restoring forces under misalignment make them a preferred choice for maintaining tight control over the load.

16 Fluid Power Free-for-All (February 2014)

IFPE offers the right balance of technology and education.

17 Graco Pump Technology Solves Long-Term Pump Leaking, Dosing Issues (September 2016)

When trying to find a new bonding material dispense system, one manufacturer tested a series of pumps — all of which leaked due to the abrasiveness of the bonding material. The manufacturer also had been attempting to manage shot size manually with their previous system, and was not able to keep dispense consistent. The company searched for a system that could accurately dispense programmed shot sizes while also eliminating the leaking issues they had experienced with previous pumps. Graco provided a Check-Mate pump with SmartWare software, and the manufacturer is now able to automatically dispense shots of bonding material as small as one ounce without leaks.

18 Traversing Steep Slopes (February 2013)

Hydrostatic drive concept gives LinsiTrak flexibility and versatility.

19 Smart Actuators for Off-Highway (February 2013)

Smart actuators bring big benefits to utility and other off-highway vehicles

20 Improved Performance for Hydraulic Seals from Thermoplastic Polyurethane (June 2012)

Seal design engineers and end users are continually seeking improved sealing systems and materials. This paper describes the potential of a new thermoplastic polyurethane (TPU) material to deliver improvements in pressure, speed and temperature capability, which are presented as comparisons to proven industry standard materials. Performance is demonstrated by virtue of test bench results of seals made from MDI-, PPDI- and NDI-based materials.

21 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.

22 IFPE 2017 (February 2017)

Fluid Power, Motion Control and Power Transmission Industries Come Together in Las Vegas to Promote New Solutions.

23 Selection and Performance Criteria for Power Transmission Couplings (October 2008)

Power transmission couplings are widely used for modifi cation of stiff ness and damping in power transmission systems, both in torsion and in other directions (misalignment compensation).

24 Selection and Performance Criteria for Power Transmission Couplings, Part II (December 2008)

Part I of this article appeared in the October 2008 issue. It provided an overview and general classifi cations of power transmission couplings, along with selection and performance criteria for rigid couplings and misalignment-compensating couplings. Part II continues the discussion with selection and performance criteria for torsionally flexible and combination-purpose couplings.

25 John Oldham: The Coupling Personified (April 2013)

A biographical sketch of John Oldham, inventor of the Oldham coupling.

26 Flexibility in Fluid Power (February 2018)

Latest Sealing Technologies Offer Optimum Wear and Frictional Characteristics.

27 MediaMation Utilizes Digitization and Pneumatics to Alter Theater Experience (August 2017)

"For your safety, please keep your hands, arms and legs inside the vehicle at all times."

28 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.

News Items About fluid couplings

1 CD-ROM on Voith Fill-Controlled Fluid Couplings (February 4, 2009)
Voith Turbo, the drive technology specialist, presents animations of fill-controlled fluid couplings on a multimedia CD-ROM. Fill-control...

2 Voith Turbo Supplies Fluid Couplings for AFC Drives (February 15, 2013)
The Jin Cheng Coal Group, one of the biggest coal groups in China, found a way to avoid unexpected downtimes of the AFCs (Armored Face Co...

3 Voith Fluid Couplings Assist Belt Conveyors (April 19, 2013)
New fluid coupling TurboBelt 780 TPXL from Voith raises the productivity of high powered belt conveyors.Developed especially for the driv...

4 Voith 715 SVL Variable-Speed Fluid Couplings Utilized in ESPO Pipeline (November 3, 2015)
The ESPO Pipeline is a project of the Russian pipeline operator Transneft and a showcase project for Voith hydrodynamic variable-speed fl...