Instruction Manual

18 MP-Series Low-inertia Servo Motor with 100 mm to 165 mm Frame Size

Rockwell Automation Publication MP-IN001H-EN-P - January 2014

Motor Load Force Ratings

Motors are capable of operating with a sustained shaft load. The radial and axial load force

location is shown in the figure, and maximum values are in the tables.

Load Forces on Shaft

The following tables represent 20,000 hour L

bearing fatigue life at various loads and speeds.

This 20,000 hour life does not account for possible application-specific life reduction that can

occur due to bearing grease contamination from external sources.

Radial Load Force Ratings

Motor

Cat. No.

500 rpm 1000 rpm 2000 rpm 3000 rpm 3500 rpm 4000 rpm 5000 rpm

kg (lb) kg (lb) kg (lb) kg (lb) kg (lb) kg (lb) kg (lb)

MPL-A/B310 78 (171) 62 (136) 49 (108) — — 40 (89) — — 36 (79)

MPL-A/B320 87 (192) 69 (152) 55 (121) — — 45 (100) — — 40 (89)

MPL-A/B330 — — 74 (163) 59 (129) — — 49 (107) — — 43 (95)

MPL-A/B420 — — 78 (172) 62 (136) — — 51 (113) — — 45 (100)

MPL-A/B430 106 (234) 84 (186) 67 (148) — — 55 (122) — — 49 (109)

MPL-A/B4520 — — 97 (213) 77 (169) 67 (147) 64 (140) 61 (134) 56 (124)

MPL-A/B4530 133 (292) 105 (232) 84 (184) 73 (161) — — 66 (146) — —

MPL-A/B4540 140 (309) 111 (245) 89 (195) 77 (170) — — — — — —

MPL-A/B4560 151 (332) 119 (263) 95 (209) 83 (183) — — — — — —

MPL-A/B520 — — 127 (280) 100 (222) 88 (194) — — 80 (176) — —

MPL-A/B540 — — 143 (316) 114 (251) 99 (219) — — 90 (199) — —

MPL-A/B560 — — 153 (338) 121 (268) 106 (234) — — — — — —

MPL-B580 — — 153 (338) 121 (268) 106 (234) — — — — — —

Axial load force.

Radial load force applied at center of shaft extension.