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    CMM Type Mill Motor Couplings

    The CMM Type coupling consists of one standard flex hub, one universal hub, one standard sleeve and one accessory kit consisting of seals and snap rings.
  • Designed with longer universal hub on one end to accommodate straight or tapered shafts
  • Standard hub and sleeve on the other end
  • Universal hub bored to customer specifications
  • Available with longer universal hubs on both ends
Unit of Measure



N/A CMM 4 HUB 610/810 MTR FRM


N/A Gear Coupling Hubs

Hub Material

N/A AISI 1045


N/A Taper Bore


N/A Metallic

Coupling Type

N/A Gear

AISE Motor Frame Size

N/A 610/810


N/A 67.30 lb

Dimensional Data

Bore Size 

N/A 3.2480 to 3.2490 in


N/A 4

Keyway Size (W x D)

N/A 3/4 x 1/4 in

Dimension HL

N/A 4.380 in111.25 mm

Dimension HD

N/A 6.250 in158.75 mm

Max. Bore (Dimensions ID1/ID2)

N/A 4.130 in104.90 mm

Cubic inches

N/A 171.09375 in³



  • Specifically designed for mill motors with tapered bores
  • Universal hub counterbored for the nut on the end of the motor shaft
  • One piece cylindrical sleeve for smoother, faster, quieter and safer operation
  • Quick assembly and disassembly
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