Couplings Deliver Zero-Backlash Control

Ruland Manufacturing's oldham couplings are typically used in motion control applications, but can also be used on general industrial equipment such as pumps, valves, gearboxes and conveyor systems. The oldham coupling is a three-piece assembly comprised of two anodised aluminium hubs and a torque transmitting centre disk. This design results in a highly customisable shaft coupling that can easily interchange inch to metric, different bore dimensions and keyed shafts.

The centre disc is available in acetal plastic for high torsional stiffness and zero-backlash, or nylon for shock absorption and noise reduction. Ruland offers numerous standard bore combinations from 1/8in (3mm) to 1in (30mm) with hubs also available in stainless steel. The ability of oldham couplings to accommodate parallel misalignment, act as a mechanical fuse and be electrically isolating means they can be used in place of straight jaw couplings. These key features promote a very light bearing load, stop transmission of power during overload, and minimise damage to more expensive machinery components.

The three-piece design of the oldham coupling allows for ease of installation. Blind assembly can be achieved by independently installing the hubs and mating their drive tenons to the slots on the centre disc. Oldham couplings are part of Ruland's complete product line, which includes shaft collars, rigid couplings and five types of zero-backlash motion control couplings: beam couplings, bellows couplings, oldham couplings, disc couplings, and curved jaw couplings.

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