7 Reasons to Consider Oldham Coupling

Oldham Couplings is the industry leader for applications requiring significant parallel misalignment. The highly customizable three-part system uses three discs made of materials that may be altered to get the desired performance. Many sectors might benefit from Oldham coupling, including the food and beverage industry (thanks to using stainless hubs and PEEK discs), the medical field, and semiconductor manufacturing. Because of their adaptability, Oldham Couplings are commonly used as a jumping-off point in system design.

  • Quick and easy to use
  • The tenons of the Oldham coupling, which fit into slots in the disc, provide for minimum backlash operation.
  • Clamps, set screws, keys, keyless, and metric and imperial bores are all acceptable for hubs so long as the bore sizes are consistent. Nylon discs dampen, and PEEK discs are heat resistant, while acetal discs have less backlash and greater torsional stiffness.
  • capability for high parallel misalignment

Limiting the amount of metal that may come into touch with one another is a key component of electrical isolation, which helps protect sensitive electronics from electrical currents.

1. There will be no consequences. Operation

Oldham couplings are a three-piece system of two lightweight, corrosion-resistant stainless steel or aluminium hubs and a centre disc. The connection works with minimal backlash since the tenons on the hubs and the slots in the disc have a moderate press fit. Many servo-driven systems use Oldham couplings because they provide accurate motion control and a low-inertia, well-balanced structure.

2. Modularity in Applications

Hubs of the same outside diameter can be connected in some ways, including clamps or set screws with keyed or keyless, an inch or metric bores. While nylon discs are dampening and PEEK discs are heat resistant, acetal discs have less backlash and greater torsional stiffness.

3. The ability to misalign in a very significant way from parallel

Oldham couplings can withstand angular misalignment in the bearings of up to 10 per cent of their OD under light loads. That makes sense, as the only thing stopping the disc from gliding over the hub tenons is the friction it generates. Oldham couplings can be applied in circumstances where shaft misalignment would normally be prohibitive due to its remarkable tolerance for parallel misalignment, which exceeds standard servo couplings.

4. Placement of Window Coverings

Due to its three-part design, Oldham couplings can be used in systems with limited shaft access. Saving a lot of time and effort, this eliminates the need to take apart the whole system assembly for installation or maintenance. Removal of Oldham discs does not necessitate the use of special equipment.

5. Electromagnetic Field Isolation of Electrical Current

Due to the lack of metal-on-metal contact, electrical isolation is possible, protecting sensitive devices like encoders from being damaged or giving inaccurate readings. This comes in handy wherever Oldham couplings are optimal. Designers should check the link during prototype development to ensure a proper PM timeframe. To the extent that the voltage is strong enough, an arc may form between the hub tenons when the disc breaks.

6. Failsafe architecture

The disc will break, and power transfer will immediately stop if there is a torque overload. Continued subpar operations might harm some systems. Oldham discs are preferable to more expensive system components breaking down or failing prematurely since they are cheap, simple to repair, and may function as a mechanical fuse.

If the disc in an Oldham coupling breaks, you’ll need to replace the whole thing. Their lower price tag is especially noticeable compared to couplings that need only one piece. Furthermore, disc replacement is quick and easy, resulting in minimal disruption to the system.

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