RPX couplings selection

RPX coupling selection to couple an 11.0kW, 1450 rev/min motor to a hammer mill which absorbs 9.6kW running for 12 hours per day with no more than 30 stops / starts per hour. A good shock absorbing spider is required for this heavy-duty application.

The ambient temperature is + 38∘C. The motor shaft is 42mm diameter and the kiln shaft 38mm.

Service factor

From table 1 on page 251, the service factor for this application is 1.75 x 1.2 x 1.0 = 2.1

Design power

The design power is 9.6 x 2.1 = 20.2 kW

RPX coupling Attributes Table

The above selection procedure is based on the following parameters: –

service factor 2.0

30∘C Maximum temperature

Shore 92 insert

  • Pilot bore flanges are in Bold
  • Taper bore flanges art in italics

100 starts per hour maximum

If the parameters are different from the above, selection should be based on power and speed.

Click here to go to Flexible Couplings Category page. 

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