Electric Motor Shaft Sizes Chart

These exceptions are noted in the general catalog.

Electric motor shaft sizes chart.

Certain nema 56z frame motors have 1 2 x 1 1 2 long shaft with 3 64 flat. Drawings represent standard tefc general purpose motors refer data section 502 for various models open or tefc d im e ns oa rf c ly. Use table 3 to find the shaft diameter for that motor. For more exact dimensional data please check the specific drawing for each catalog number.

Nema frame shaft sizes big electric effective 06 01 13 hydra mount elektrim motors learn how to retrofit hydra mount brochurenema frame shaft sizes big electric motorsnema frame shaft sizes big electric motorsquick reference motor dimensionsquick reference motor dimensionsmotor frame sizes dc brushed servo motors metric nema 23 34 42 56electric motor nema frame table. Leader in energy efficient industrial electric motors and drives nemakeyseat nemakeyseat shaft dimensionsshaft dimensions u r s u r s 3 8 21 64 flat 1 7 8 1 19 32 1 2 1 2 29 64 flat 2 1 8 1 27 32 1 2. Short shaft motors have shaft dimensions that are smaller than the shafts associated with the normal frame size. The above chart provides typical baldor reliance motor dimensions.

Electrical motor efficiency ratings nema electrical motor efficiency ratings. They are not designed for use in belt drive applications. T indicates that the motor is of the 1964 and later t frame vintage. Also included is the shaft length and keyseat width.

T h e s e d i m en s i o n s a r e s p e c i f i c t o e a c h m anu f a c t u r e r. Nema shaft u k ey r dim n s 3 8 1 2 5 8 7 8 1 1 8 1 3 8 1 5 8 1 7 8 2 1 8 2 3 8 2 1 2 2 7 8 3 3 8 3 7 8 21 64 29 64 33. Association frame size refers to mounting only and has no direct bearing on the motor body diameter. Electrical motors full load amps full load currents for 460 volts 230 volts and 115 volts motors single and 3 phase.

The frame number relates to the d dimension distance from center of shaft to center bottom of mount. Short shaft motors are designed to be directly coupled to a load through a flexible coupling love joy etc. These shaft diameters are based on the 1964 nema reratings. Refer to table 1 for open motors or table 2 for totally enclosed fan cooled motors tefc to find a frame size based on motor hp.

Iec quick reference chart iec foot mounting shaft b5 flange b14 face general frametype abchdela mnpstmnpstlacadhcxx 102 121 13 63 300 100 80 40 63 11 23 8 115 95 140 9375 60 90 m5 2 5 119 44 760 500. In any standard frame number designation there are either two or three numbers. Electrical motor shaft power electrical motors are rated in horsepower or watt. Use tables 4 6 for 1953 nema reratings u frames.

Dimensional data for 444t through 449ts frame sizes reflect the use of a top mounted conduit box with a cantilevered mounting arm. Dimension v is shaft length available for coupling pinion or pulley hub this is a minimum value.