PTDA’s industry research reports accelerating growth in 1Q2017

The first quarter 2017 Sales History & Outlook Report (SHOR) released by the Power Transmission Distributors Association showed power transmission/motion control (PT/MC) distributor sales began to rise. The most recent 12 months of sales remain 1.9% below the year-ago level, but several positive indicators suggest total sales will be above the year-ago level in the […]

Servo couplings: Stiffness, damping, hunting, and stabilization considerations

Here we address considerations when specifying servo couplings to satisfy servo requirements — ever-evolving specifications that become more demanding all the time. By Tetsuya Niwa • Director of product planning and development Kei Yamada • Product Manager — Product planning and development Hiroki Goto • engineering specialist Paulo Castelo • Technical solutions supervisor • NBK America […]

R+W bellows couplings for spindle applications

R+W Coupling Technology (based out of Klingenberg, Germany) has announced two new products to its bellows coupling line: the SP6 elastomer and SP3 bellows coupling for spindle applications. These couplings feature an external clamping ring system, with the base hub components held to a very high level of concentricity between the two respective bores during the […]

R+W Coupling Technology at EMO

The 2017 EMO tradeshow will take place in Hannover, Germany from September 18th to 23rd. Over 2050 exhibitors from 45 countries will be showcasing their newest products and services at the world’s largest metalworking tradeshow. This year’s EMO motto – “Connecting systems for intelligent production” – conveys current topics and trends in the industry. Companies […]

Flexible-coupling considerations for motion designs in OEM and plant setups

Couplings connect rotating shafts in equipment powered by electric motors and other drives. All transmit torque and angular velocity. Flexible variations compensate for misalignment. Many of the latter even address vibration and improve system dynamics. Design considerations include machine or installation construction and backlash, torsional stiffness, damping, inertia, torque ratings, maximum rpm, size, misalignments, ease […]

Servomotor couplings: Stiffness, damping, hunting, and stabilization considerations

Here we address considerations when specifying a servomotor coupling to satisfy servo requirements — ever-evolving specifications that become more demanding all the time. Tetsuya Niwa • Director of product planning and development Kei Yamada • Product Manager — Product planning and development Hiroki Goto • engineering specialist Paulo Castelo • Technical solutions supervisor Edited by […]

Reaction forces from couplings: How to prevent or mitigate?

All flexible couplings compensating for misalignment can cause reaction forces if that misalignment is excessive. These often-overlooked reaction forces transmit to connected shafts and support bearings, and can cause damage to motion axes — especially on precision designs with delicate bearings and slender shafts. Recall that flexible couplings must have torsional stiffness to minimize windup, […]

End-to-end coupling solutions for for cranes and hoists

When it comes to gearbox coupling applications, some misalignment is unavoidable. This is especially true for cranes and hoists due to their very heavy loads. Fortunately, you can manage misalignment by choosing the right couplings. Here are some options specifically for cranes and hoists: Connecting The Gearbox And Cable Drum Recommended for crane-lifting mechanisms, barrel […]

Lateral mounting safety couplings for extruders

R+W has expanded its line of ST series safety couplings, with a specially designed version now available for the protection of extruding equipment. Taking advantage of  the ball-detent safety element system, the driving and driven ends separate within milliseconds of a torque overload, protecting the extruder from damage and reducing expensive repairs and costly downtimes. […]

TB Wood’s cost savings calculator

TB Wood’s has created a new program that allows users to quantify cost and savings when selecting a Sure-Flex Plus EPDM or Neoprene sleeve. The program is now available at, or it can be installed as a smartphone app on any Android or Apple device. Users simply input their current maintenance interval, cost of downtime, […]

Jaw couplings for precision conveyors

Ruland zero-backlash jaw couplings have a balanced design, accommodate all forms of misalignment and have high dampening capabilities, making them an ideal fit for precision conveyors with frequent starts and stops. These conveyor applications are often found on equipment used in semiconductor, solar, optical inspection, and medical automation. Jaw couplings offer system designers a wide […]

Sulzer finds engineering talent with summer intern program

Investment is an important process for any business. Investment in new facilities and manufacturing tools keeps the company modern, while investment in R&D helps to keep it at the top of its game within the industry. Of course there is another type of investment that shouldn’t be overlooked; investment in people. The Sulzer summer intern […]

Shaft collars, couplings, and mounts for conveyor systems

A full line of shaft collars, rigid couplings, and mounts for building conveyors with varying load capacities and environmental considerations are available from Stafford Manufacturing Corp. Stafford shaft collars, couplings and mounts are  suited for use in virtually all conveyor systems as stops, spacers, and mounting devices for guides, rollers, sensors, and other structural and […]

Turboflex Plus couplings for turbomachinery applications

Ameridrives and Bibby Turboflex, two international flexible coupling manufacturers, have collaborated to introduce a new series of high performance disc couplings designed to meet the stringent requirements of today’s turbomachinery market. The new Turboflex Plus couplings combine Turboflex and Ameridisc disc coupling technologies together with the experience of the Ameriflex diaphragm coupling to create a […]

Custom gear units drive log washers

Renold Gears has designed a heavy-duty, custom gearbox solution for a manufacturer of a special type of coarse material washers known as log washers. Effectively these are huge rectangular boxes, or troughs, usually fabricated from steel plate, containing two steel shafts with paddles attached along their length. They are commonly used for washing and sizing […]

Backlash-free servo couplings for all drive constellations

mayr power transmission provides a wide spectrum of backlash-free, high-performance servo couplings and is permanently expanding its standard modular system. Furthermore, new, modern production processes ensure favourable prices and short delivery times. In addition, the company also stands for diverse, future-orientated solutions for safety brakes and overload clutches. For customers, this means high-quality power transmission […]

Reich-Kupplungen RCT series

Reich-Kupplungen has expanded its product portfolio with the addition of the RCT series, consisting of torsionally stiff flange couplings for diesel engine drive systems. Based on the core competence in rubber flexible products, well-proven material pairings are also used for this new coupling type. The metal-elastomer combination not only imparts the RCT a high torsional […]

Americardan 2000 Series U joints

The Ameridrives Universal Joint is available in seven basic bearing designs: Sizes U2131-U2155: Needle bearing design. Bearing caps are retained by snap rings. Sizes U2160-U2188: Needle bearing design. Bearing caps are retained by bolts. Sizes U2192: Uses two rows of roller bearings. Bearing caps are retained by snap rings. Lube fitting in center of cross. […]

Disc couplings with integrated coolant tube for spindle drives

R+W has recently expanded its LP product line with a new disc pack coupling model. In addition to the wide range of standard designs, R+W can now supply a version with an integrated coolant tube. This offers many advantages to manufacturers of machine tools with long spindle drives. This specially designed double disc spindle coupling […]

Drone and UAV components include shaft collars, couplings and mounts

A broad range of standard and custom shaft collars, couplings, clamps, and mounts for attaching cameras, sensors, and other devices to drones and UAVs are being introduced by Stafford Manufacturing Corp. of Wilmington, MA. Stafford Parts for Drones can include shaft collars, couplings, and flange mounts for attaching and repositioning structural components, cameras, sensors, and […]

Gear coupling inner tubes from Misumi

Coupling Tips

Kohara Gear Industry coupling inner tubes from Misumi put the tooth surface high-frequency hardening as the outer cylinder of this easy attachable and detachable gear coupling. It is a durable product subjected to a chromate plating. Tooth type has applied crowning and it can be used up to a maximum of 5° even if there […]

Multi-beam couplings

Coupling Tips

The CLAAS Group is one of the world’s leading providers of harvesters, tractors, sowing machinery and agricultural systems. CLAAS Industrietechnik GmbH, based in Paderborn, Germany is part of the CLAAS Group that focuses on drive technology including gearboxes and hydraulics. CLAAS Industrietechnik needed a coupling solution for use in the transmission for its newest range […]

High-performance couplings for aeroderivative gas turbine

Coupling Tips

The IHI Group, one of the largest engineering and manufacturing companies in Japan, specializes in large-scale power and construction projects. One aspect of its business is to take jet engines that were originally designed for aerospace applications and adapt them to generate electricity in land-based, combined cycle gas turbine (CCGT) power plants. These efficient aeroderivative […]

Sure-Flex Plus couplings ANSI centrifugal pump packages

Coupling Tips

Located in the greater Houston area, GPM Pump and Seal is a  provider of pumps, pump parts, mechanical seals and complete pump systems for various applications including oil and gas, petrochemical, mining, water and wastewater treatment. GPM has been specifying TB Wood’s Sure-Flex couplings for several years. Early on, the company used other couplings, but […]

Turboflex HS couplings for biomass-fired steam turbines

Coupling Tips

A leading global provider of power generation technologies required coupling solutions for use on three steam turbines at a series of new biomass power plants located in the UK. The three geared reaction steam turbines include a 23 MW unit and a 45 MW unit that will be fired by waste wood, while a 50 […]