Industrial Couplings

Power Transmission

Model Elastic / gear / diaphragm / Oldham

Technical Parameters

Parameter Range / Option
Types Elastic jaw / pin, gear, diaphragm, Oldham / slider
Selection basis Torque with service factor, speed, misalignment, reversing duty
Bore Finished to both shaft drawings; keyway or shrink fit
Misalignment Angular, parallel and axial tolerance stated per type
Elastic element Vibration isolation and bearing protection
Options Brake drum, spacer, torque limiter, shrink disc
Typical duty Motor-to-gearbox drives, pumps, fans, conveyors, mixers

Product Introduction

We supply the full range of shaft couplings used on industrial drive trains: elastic (jaw and pin) couplings for general motor-to-gearbox connections, gear couplings for high torque and heavy duty, diaphragm couplings for high speed with no backlash, and Oldham or slider couplings where parallel shaft offset must be accommodated. The right choice depends on torque, speed, misalignment and whether the drive reverses.

Selection starts with the transmitted torque and the service factor of the driven machine — crushers, mixers and reciprocating loads need a higher margin than centrifugal fans. We then check shaft diameters, keyways or shrink-fit arrangement, the allowable angular, parallel and axial misalignment, and the operating speed. Elastic elements also isolate vibration and protect bearings; diaphragm and gear types suit higher torque density but require more careful alignment.

Couplings are supplied with the specified bore, keyway and hub arrangement, and we confirm the fit against both shaft drawings before release so the assembly goes together on site without machining. Where a drive train includes a gearbox, motor, backstop or fluid coupling, we check the whole string as one system rather than sizing each part in isolation. Alignment instructions and the recommended installation tolerances are supplied with the order.

We consolidate couplings with gear reducers, motors, backstops and conveyor wear parts into one shipment, and keep elastic elements, seals and bolts available as spares. Lead time is confirmed against the configuration at quotation.

Send us both shaft diameters and lengths, transmitted torque or motor power, speed, misalignment allowance and any reversing duty. We will recommend the coupling type, confirm the bores and return a complete selection with a quotation.

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