A leading global manufacturer of oil and gas drilling equipment needed a robust coupling solution for use on its 1,000 ton top drive. The 2,000 HP drive uses two AC motors, suspended from the rig’s mast, to rotate the drill string of pipe sections into the well hole. These pipe strings can reach lengths of […]
How flexible shafts improve flight
In the history of aerospace manufacturing, there have been several innovative technologies that have changed the shape of flight. Some of these technologies aren’t well known or influential on their own, like the propeller or jet engine, but are instead innovations that occurred behind the scenes, quietly enabling steady improvements to aerospace technologies in various […]
S.S. White Technologies highlights custom flexible shafts for aerospace
S.S. White Technologies, a designer and manufacturer of flexible shafts and related assemblies, highlights bespoke flexible shaft solutions for aerospace applications. Flexible shafts transmit rotary motion much like a solid shaft, but can be routed over, under and around obstacles where a solid shaft cannot be used. Flexible shafts are used in a variety of […]
No maintenance flexible coupling from Twin Spring Coupling
Twin Spring Coupling has announced the release of its new TSC500 (500-ft lbs) flexible coupling solution. Made from 2 counter wound torsion springs and no internal components means a maintenance free flexible coupling with the ability to work at larger angles than traditional universal, CV, Cardan, beam, bellows and other flexible coupling units, at both […]
New flex element/blade triangular bushing design
Ameridrives and Bibby Turboflex, two leading Altra brands, have developed the Tri-Bushing™, a unique flex element/blade triangular bushing design that increases the axial capability of high-performance flexible disc couplings used in turbomachinery applications. Flexible couplings for critical equipment must accommodate angular and axial movement due to thermal growth. In steam and gas turbine applications, machinery […]
How do I prepare for a flexible coupling installation?
To gain some insight on using a rigid coupling to later install a flexible coupling we talked to Bobby Watkins of Ruland manufacturing company to learn more. Here is what he had to say. Here I’m going to talk about how to use a rigid coupling in order to align components in preparation for the […]
What are couplings for power-transmission drive shafts?
As outlined in our coverage of couplings for motion control — here at this couplingtips.com article — couplings connect rotating shafts powered by a drive of some type — often an electric motor. All couplings serve to transmit drive torque and angular velocity. But applications for motion control (such as axes to position loads) usually […]
Vector coupling for tugboat winch
One of the World’s largest diesel engine distributors, located in Canada, required a reliable coupling for use on a commercial tugboat’s hydraulic towing winch system. The coupling connects the winch’s hydraulic pump to the front of one of the tug’s twin 1500 HP diesel propulsion engines that transmit 450 HP to the pump. The winch […]
Update on flexible-coupling considerations for OEM and plant designs
All couplings 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 of installation, robustness, and cost. For power transmission (as in motors for […]
Reaction forces from couplings: How to prevent or mitigate?
All flexible couplings compensating for misalignment cause reaction forces, and their effect is significant if 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. Though couplings get their compliance from elastomeric deflection, […]
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