Oldham couplings for printing applications

Ruland oldham couplings consist of two hubs that mate to a torque-transmitting centre disk, making them adaptable to a wide variety of printing applications. This three-piece design is suitable for equipment where the roller must be frequently changed out. Hubs can be left in place and the roller can be quickly removed by sliding the disk and assembly off the driving hub. Oldham couplings are highly customisable and can easily combine clamp and set screw hubs with inch, metric, keyed, and un-keyed bores. Hubs are standard in black anodised aluminium for improved lubricity, increased life, and low inertia. Ruland utilises a proprietary hub machining process that leaves a smoother surface for interaction between the hub and disk, leading to a longer life and increased performance.

Oldham couplings transmit torque by mating the slots on the centre disk to the drive tenons on the hubs. They accommodate angular and axial misalignment, and are especially useful in applications where parallel misalignment is present. The replaceable centre disk is available in acetal plastic for high torsional stiffness, nylon for shock absorption and noise reduction, and PEEK for high temperature and low out-gassing. In the event of wear or failure, the disk can be easily replaced, restoring the coupling's original performance characteristics. Oldham couplings have the advantage of electrical isolation due to the non-conductive nature of the centre disk preventing electrical currents from being passed to delicate instruments which can cause inaccurate data readings or damage.

Ruland offers oldham couplings with bore sizes ranging from 1/8" (3mm) to 1-1/8" (30mm). Stainless steels hubs are available upon request for use in high corrosion or clean room environments. Disks can be manufactured with a centre hole to allow further shaft penetration or tapped holes to attach the disk to a hub so it stays in place during disassembly.

Oldham couplings are part of Ruland's complete coupling line which includes rigid couplings with precision honed bores and five styles of motion control couplings: beam, bellows, disc, zero-backlash jaw, and oldham. All Ruland products are manufactured in its Marlborough, Massachusetts factory and are RoHS2 and REACH compliant.

Product summary:

• Accommodate high amounts of parallel misalignment with low bearing loads for reduced system wear
• Ease of disassembly allows for rapid removal and change out of rollers
• Balanced design for reduced vibration at higher speeds
• Aluminium hubs for lightweight and low inertia
• RoHS2 and REACH compliant
• Carefully made in Ruland's Marlborough, Massachusetts factory and available for immediate delivery

Please follow the link to learn more about Ruland's oldham couplings.