Electric Motor Frame Size Dimensions

Standardized motor dimensions are established by the national electrical manufacturers association nema are tabulated below and apply to all base mounted motors listed herein that carry a nema frame designation.

Electric motor frame size dimensions.

Baldor electric company p o. 56c 56hc 56j 143tc and 145tc face dimensions 182tc thru 1256tc. Box 2400 fort smith arkansas 72902 2400 u s a. Electrical electrical units amps and electrical wiring wire gauge and awg.

Motor dimensional chart nema c and j face mounting dimensions mounting dimensions of 1the 156j face are exactly the same as the nema 456c. Keyseat dimensions frame 42 48 56 56h 143t 145t 182 184 182t 184t 213 215 213t 215t 254u 256u 254t 256t 284u 286u 284t 286t 284ts 286ts 324u 326u 324t 326t 324ts 326ts 364u 365u 364t 365t 364ts 365ts 404u 405u 404t 405t 404ts 405ts 444u. Similarly a 56 frame motor would have a shaft height of 3 1 2 inches. The largest of the current fractional horsepower frame sizes is a 56 frame which is available in horsepowers greater than those normally associated with fractionals.

The following are dimensional size charts for standard electric motor nema standard frames and configuration. 56j face 5has 3a threaded shaft of stainless steel while all others have a keyed steel shaft. See illustrations and table below for speci cs. Horizontal shaft arrangements vertical shaft arrangements.