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White acetal Oldham coupling disc with three lobes and central aperture

Ruland Manufacturing

Ruland Manufacturing OD26/41-AT Oldham Coupling Disc

SKU CH-RG2S-PCW3K

Acetal Oldham coupling disc handles high parallel misalignment up to 10 percent of OD with 130 in-lb maximum torque and 4,500 RPM rating

  • TypeCouplings, Collars & Adapters
  • Handles high parallel misalignment up to 10 percent of coupling OD
  • Low angular misalignment of 0.5 degrees for precise motion control
  • Maximum torque capacity of 130 in-lb with 480 in-lb break torque
  • Acetal disc material provides electrical isolation and chemical resistance
  • Operates at speeds up to 4,500 RPM with 125 in-lb/deg torsional stiffness

Ruland Oldham Coupling Disc OD26/41

The Ruland OD26/41-AT is a precision Oldham coupling disc designed for motion-control systems that must accommodate significant parallel misalignment. It transmits torque between hubs while compensating for lateral shaft offsets up to ten percent of the coupling outside diameter. The acetal disc handles a maximum torque of 130 in-lb and a break torque of 480 in-lb at speeds up to 4,500 RPM.

Verify shaft alignment and hub fit before ordering

Confirm that your application's parallel misalignment does not exceed 0.01 in and that angular misalignment stays within 0.5 degrees. Axial motion must remain below 0.006 in to avoid overloading the disc. Ensure the hub diameter matches the 1 5/8 in specification and that the torsional stiffness of 125 in-lb/Deg suits your system response requirements. The component carries a California Proposition 65 warning for reproductive-harm chemicals.

Suits high-parallel-misalignment motion axes

This disc suits designers integrating shafts where lateral offset is the dominant alignment error and torque demand stays within 130 in-lb. It is not for buyers who need zero-backlash rigid coupling, who require higher torque capacity than 130 in-lb, or who must operate above 4,500 RPM. Engineers needing metallic discs for temperature extremes or chemical resistance should evaluate alternative materials.

Highlights

  • Handles high parallel misalignment up to 10 percent of coupling OD
  • Low angular misalignment of 0.5 degrees for precise motion control
  • Maximum torque capacity of 130 in-lb with 480 in-lb break torque
  • Acetal disc material provides electrical isolation and chemical resistance
  • Operates at speeds up to 4,500 RPM with 125 in-lb/deg torsional stiffness

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

What comes in the box with the Ruland OD26/41-AT coupling disc and what must be purchased separately?

The box contains the acetal Oldham coupling disc only; hubs for the 1 5/8 in diameter shafts are sold separately.

How do I choose between the OD26 and OD41 designations for my application?

OD26 and OD41 are the two coupling size codes for this single disc; select the disc that matches the hub diameter of 1 5/8 in specified for your setup.

What does the 130 in-lb maximum torque rating mean when the disc is installed in a real machine?

It is the continuous torque the acetal disc can transmit at up to 4,500 RPM with 0.5 degree angular and 0.01 in parallel misalignment before exceeding its design limit.

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