Oldham couplings for conveyor systems

Ruland Oldham couplings comprise two anodised aluminium hubs and a torque transmitting centre disk. This allows a single coupling to combine clamp and set screw hubs with inch, metric, keyed and keyless bores. Ruland uses a proprietary hub machining process that leaves a smoother surface for interaction between the hub and disk, resulting in long life and reduced downtime. Oldham couplings from Ruland have a balanced design for reduced vibration at high speeds. Modular conveyor systems benefit from a standard coupling that can be installed on different motor, shaft and roller configurations including blind assemblies.

Torque transmission is accomplished by mating the slots on the centre disk to the drive tenons on the hubs. Oldham couplings accommodate all forms of misalignment, and are best suited for parallel misalignment. They operate with low bearing loads, protecting system components such as bearings. The disk is available in acetal for high torsional stiffness, PEEK for high temperature and low outgassing, and nylon for shock absorption and noise reduction. In the event of wear or failure, the disk can be replaced, restoring the original performance characteristics. Oldham couplings are electrically isolating due to the non-conductive nature of the centre disk. This helps prevent electrical currents from being passed to delicate instruments. They also act as a mechanical fuse in torque overload situations, with the disk cleanly breaking and stopping power transmission.

Bore sizes range from 3mm (1/8 ") to 30mm (1-1/8 ") and stainless steel 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.

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
• Modular systems benefit from customisability and blind assembly capability
• RoHS2 and REACH compliant
• Available for immediate delivery

Oldham couplings are part of Ruland's complete servo coupling product line that also includes rigid, beam, bellows, disc and jaw couplings. Further information is available at www.ruland.com/ps_couplings_oldham.asp#about.