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Small aluminium Oldham coupling, 25.4 mm diameter, 10 mm clamp bore

Ruland Manufacturing

Ruland Manufacturing MOCT25-10-A Oldham Coupling 10 mm Bore

SKU CH-PB5C-A8BRD

Oldham coupling with 10 mm clamp bore compensates 0.5° angular and 0.2 mm parallel misalignment at 4,500 RPM

  • TypeCouplings, Collars & Adapters
  • Precise shaft alignment with 0.5° angular tolerance
  • Accommodates 0.2 mm parallel offset for smooth operation
  • Clamp-on design secures 10 mm round shafts firmly
  • Aluminium hubs keep inertia low at 4,500 RPM max
  • Compact 25.4 mm OD fits tight machine envelopes

Application Fit

This Oldham coupling connects two 10 mm shafts while allowing up to 0.5 degrees of angular misalignment and 0.2 mm of parallel offset. The clamp-style hubs lock without keyways, so installation does not require shaft modification. It suits motion-control axes where precise positioning matters more than high torque.

Build Integration

The 25.4 mm outside diameter and 31.8 mm overall length fit inside compact machinery envelopes. Aluminium hubs keep rotating mass low, which reduces inertia on small servo or stepper motors. Axial motion of 0.1 mm accommodates thermal expansion without preloading bearings.

Sustained Operation

Rated for 4 500 RPM continuous speed, the coupling maintains its misalignment capacity during extended duty cycles. The Oldham centre disc absorbs cyclic parallel error without generating heat that would degrade accuracy. California Proposition 65 warnings apply to the materials used.

Highlights

  • Precise shaft alignment with 0.5° angular tolerance
  • Accommodates 0.2 mm parallel offset for smooth operation
  • Clamp-on design secures 10 mm round shafts firmly
  • Aluminium hubs keep inertia low at 4,500 RPM max
  • Compact 25.4 mm OD fits tight machine envelopes

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

What maximum speed can the coupling sustain before vibration becomes the limiting factor?

The coupling is rated for a maximum speed of 4,500 RPM, which is the primary limit under sustained operation.

How much axial motion does the coupling allow during continuous all-day operation?

The design permits 0.1 mm of axial motion while running continuously.

What shaft diameter must the buyer already have for the 10 mm clamp bore to fit?

The clamp bore accepts a 10 mm round shaft with no keyway required.

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