• A complete C Type coupling is comprised of two standard C Type hubs, one cushion set, and one collar with hardware.
Unit of Measure



N/A C276 HUB 2-5/8 N/KW

Hub Style

N/A 3

Coupling Type

N/A Jaw


N/A Cast Iron


N/A Gray/Metallic

# of Jaws

N/A 3

Elastomeric Member

N/A SOX (NBR) Rubber


N/A 16.50 lb

Weight (Complete Coupling w/ Max. Bores)

N/A 47.00 lb

Weight (Complete Coupling w/ Min. Bores)

N/A 36.00 lb

Dimensional Data

Bore Size 

N/A 2 5/8 in


N/A C276

Keyway Size (W x D)

N/A No Keyway

Length thru Bore

N/A 3.120 in79.25 mm

Outside Diameter

N/A 6.180 in156.97 mm

Min. Bore (Dimensions ID1/ID2)

N/A 0.875 in22.00 mm

Max. Bore (Dimensions ID1/ID2)

N/A 2.875 in73 mm

Overall Length of Hub

N/A 7.870 in199.90 mm

Dimension CD

N/A 6.530 in165.86 mm

Dimension CL

N/A 0.120 in3.05 mm

Dimension G

N/A 1.630 in41.40 mm

Dimension HD

N/A 5.00 in127.00 mm

Dimension SL

N/A 1.560 in39.62 mm

Cubic inches

N/A 300.57419 in³

Performance Data

Nominal Torque

N/A 4716 in·lb

Max. Speed

N/A 4800.00 rpm

Moment of Inertia WR2

N/A 188.000 lb·in²

Rated HP at 100 rpm

N/A 7.5 hp

Rated HP at 1,200 rpm

N/A 90 hp

Rated HP at 1,800 rpm

N/A 135 hp

Rated HP at 3,600 rpm

N/A 270 hp

Spider Performance

Spider Performance

  • Nitrile Butadiene (Buna N) Rubber is a flexible elastomer material that is oil resistant, resembles natural rubber in resilience and elasticity and operates effectively in temperature range of -40° to 212° F (-40° to 100° C). Good resistance to oil. Standard elastomer. (Also applies to SXB Cushions.)



  • Greater torque and bore capacity than the L-Line series jaw coupling
  • Elastomeric cushions are radially removable
  • Cushions available in SXB rubber and Hytrel



  • Jaw coupling hubs are standard with one set screw, for two set screws see RRS & RRC sections.