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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
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Unit of Measure

Key Dimensions

Description 

 N/A CMM-7/8-HUB-W/CENTER

Type

 N/A Gear Coupling Hubs

Hub Material

 N/A AISI 1045

Style

 N/A Unbored

Color

 N/A Metallic

Bore Type

 N/A Center

Coupling Type

 N/A Gear

Weight

 N/A 1.20 lb

Complete Coupling Weight

 N/A 7.00 lb

Dimensional Data

Size

 N/A 7/8

Overall Length 

 N/A Determined by Length of Mill Motor Hub

Outside Diameter

 N/A 3.310 in3.31 mm

Max. Bore (Dimensions ID1/ID2)

 N/A 1.25 in31 mm

Dimension CBD

 N/A 1.940 in49.28 mm

Max. Safe Counterbore (Dimension CBD1)

 N/A 1.630 in41.40 mm

Dimension DC

 N/A 0.130 in3.30 mm

Dimension DC1

 N/A Determined by Customer Specifications

Dimension G

 N/A 0.130 in3.30 mm

Max. Length of Universal Hub (Dimension HL1)

 N/A 3.750 in95.25 mm

Dimension HL

 N/A 1.500 in38.10 mm

Dimension HD

 N/A 2.000 in50.80 mm

Dimension LS

 N/A 2.000 in50.80 mm

Dimension R

 N/A 3.750 in95.25 mm

Dimension SL

 N/A 1.000 in25.40 mm

Cubic inches

 N/A 6.00000 in³

Performance Data

Nominal Torque

 N/A 2500.00 in·lb

Max. Speed (Unbalanced)

 N/A 6000 rpm

Max. Angular Misalignment

 N/A 0.50 º

Parallel Misalignment

 N/A 0.005 in

Features

Features 

 N/A
  • 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

Notes

Notes 

 N/A
  • HL1 Dimensions are the maximum lengths of Universal hubs kept in stock and altered to customer specifications.
  • Longer length hubs are made to order.
  • Dimension CBD1 as shown is the maximum safe counterbore. Diameter of this counterbore is to customer specifications.
  • Rough bore mill motor hubs are manufactured to HL1 length with straight bores.
  • Puller Holes are standard on sizes 4 through 12.
  • Puller Holes are available for sizes 7/8 through 3.5 at an additional charge.
  • Interference bores with no set screws are standard unless otherwise specified.
  • Inch bores and keyway tolerances conform to ANSI / AGMA 9002-B04.
  • For metric bores and keyway, consult Lovejoy Engineering Section.
  • Larger sizes are available, please consult Lovejoy Technical Support.