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    The MDS (mini disc spacer) Series coupling features a higher parallel misalignment capacity over standard MD Series at .006 inches. The MDS Series also has the highest parallel misalignment at .012 inches and angular misalignment at 2° of any of the mini disc couplings.
Unit of Measure



N/A MDS32C CPLG 1/4X1/4

Coupling Size


Bore Type

N/A Finished Bore


N/A Mini Disc Coupling

Disc Material

N/A Stainless Steel

Hub Material

N/A Aluminum


N/A Clamp Screw


N/A Motion Control


N/A 0.11 oz

Weight (Complete Coupling w/ Min. Bores)

N/A 1.69 oz

Dimensional Data

Bore A

N/A 0.250 in

Bore B

N/A 0.250 in

Overall Length

N/A 1.575 in40.00 mm

Keyway Size

N/A No Keyway

Outside Diameter

N/A 1.260 in32.00 mm

Min. Bore (Dimensions ID1/ID2)

N/A 0.236 in6 mm

Max. Bore (Dimensions ID1/ID2)

N/A 0.394 in10.00 mm

Length thru Bore

N/A 0.539 in13.70 mm

Clamp Screw Size

N/A M3

Dimension HD

N/A 0.866 in22.00 mm

Cubic inches

N/A 2.50047 in³

Performance Data

Max. Operating Temperature

N/A 300.00 ºF

Nominal Torque

N/A 18.00 in·lb

Angular Misalignment

N/A 2.00 º

Axial Misalignment

N/A ± 0.016 in

Parallel Misalignment

N/A 0.006 in

Moment of Inertia

N/A 0.2120 lb·in²

Torsional Stiffness

N/A 8850.00 in·lb/rad



  • Zero backlash design
  • High torsional stiffness
  • Aluminum hubs with stainless steel discs
  • Moderate-high torque capabilities
  • Low Inertia



  • Nominal torque, torsional stiffness, weight and moment of inertia are based on minimum bore size.
  • Various hub diameters available to accommodate different size bore diameters.
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