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Motor Selection Guide

Motor Selection - Based on RM110

Motor performance can be derived from the above graphs as in the examples shown.

Where motors are not required to start under load, such as fan drives, selection may be made using either Graph 1 or Graph 3 using the required running torque or power only. For applications where the motor starts under load, such as hoists, winches or track drives, the starting torque in Graph 2 must also be considered. Starting torque varies between the maximum and minimum values shown, depending on the angular position of the output shaft.


Running torque example:
RM110 at 5.5 bar / 80 psi gives 4.74 Nm / 3.5 lbf. ft. torque at 2000 r.p.m.

Starting torque example:
RM110 at 5.5 bar / 80 psi gives between 5.694 Nm / 4.2 lbf. ft. and 8.813 Nm / 6.5 lbf. ft. at start depending on output shaft position.

Output power example:
RM110 at 5.5 bar / 80 psi gives 1.4 h.p. at 2000 r.p.m.

Air consumption example:
RM110 at 5.5 bar / 80 psi and 2000 r.p.m. requires 22.65 L/S / 48 cu.ft./min. free air.



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