KD® Disc Coupling, Spacer Style KD21® with MT Disc Packs

  • Piloted Flange.
  • Standard disc couplings – no lubrication.
  • Theory of Operation: Transmits torque through thin scalloped flexible disc pack.
  • Available from shelf for immediate shipment.
  • Designed to meet API 610.
  • Close coupled and spacer style.
  • Custom-design available.
  • Wide variety of styles and sizes.

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Size   Max. Bores(in) Coupling Rating (HP/100 RPM)   Torque Rating  Maximum Speed (RPM) Total Weight(lbs)   Total WR2 (lb-in2)  Spacer Tube Weight per inch Axial Capacity(in) 
 Continuous(in-lb)  Peak(in-lb)  Weight(lbs)  WR2 (lb-in2)
 053  1.75  3.2  2000  4000  8200  7.7  16  0.50  0.42  +/-055
 103  1.75  6.3  4000  8000  18200  7.8  16  0.24  0.27  +/-080
 153  2.50  21.6  13600  27200  14800  17.7  67  0.39  0.80  +/-140
 204  3.00  57.1  36000  72000  13000  29.8  160  0.81  2.67  +/-110
 254  3.75  82.5  52000  104000  11200  44.3  336  0.79  4.36  +/-140
 304  4.50  141  89000  178000  9900  70.4  745  1.17  8.06  +/-170
 354  5.00  238  150000  300000  8800  117  1640  1.96  17.0  +/-200
 404  5.50  340  215000  430000  7800  177  3150  2.21  24.3  +/-225
 454  6.38  405  255000  510000  7200  205  4360  2.54  37.0  +/-250
 504  7.00  570  360000  720000  6600  305  7640  3.67  62.6  +/-275
 554  7.75  800  505000  1010000  6100  402  11800  3.89  74.7  +/-300
 604  8.50  1050  660000  1320000  5600  512  17800  5.21  115  +/-320
 705  10.75  2400  1510000  3020000  4500  922  50000  9.40  303  +/-270
 805  12.00  3670  2310000  4620000  4000  1350  93800  12.6  507  +/-310
 905  13.50  4130  2600000  5200000  3600  1700  146000  11.8  675  +/-400

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