Nema Motor Frame Sizes

Regions using si units work with iec standards see page iec frame size. Therefore most motor series are offered with both standard frame sizes. Horsepower 900 rpm 1200 rpm 1800 rpm 3600 rpm hp t frames 1964 present u frame 1952 present original nema t frames 1964 present u frame 1952 present original nema t frames.
nema motor frame sizes

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Nema motor frame sizes. Base of 56hz frame motors has holes and slots to match nema 56 56h 143t and 145t mounting dimensions. The nema national electrical manufacturers association standardized the motor frame sizes for the global inch markets. These exceptions are noted in the general catalog. Nema quick reference chart nema frame de2f h nop uvaa ab ah aj ak ba bb bd xo tap 42 2 58 1 34 1 1116 932 1 12 54 111638 1 18 384 132 1 516 3 34 3 2 116 184 58 1 916 14 20.

Nema frameshaft sizes frame numbers are not intended to indicate electrical characteristics such as horsepower. At certain nema 56z frame motors have 12 x 1 12 long shaft with 364 flat. However as a frame number becomes higher sc in general does the physical size of the motor and the horsepower. There are many motors of the same horsepower built in different frames.

Motor dimensional chart nema c and j face mounting dimensions mounting dimensions of 1the 156j face are exactly the same as the. Nema national electrical manufacturers. Discontinued nema frame. 803 324 3259 standard nema frames vs.

Standardized motor dimensionsestablished by the national electrical manufacturers association nemaare tabulated below and apply to all base mounted motors listed herein that carry a nema frame 1designation. Electrical motor efficiency ratings nema electrical motor efficiency ratings electrical motor shaft power electrical motors are rated in horsepower or watt electrical motors full load amps full load currents for 460 volts 230 volts and 115 volts motors single and 3 phase. Standard nema frames vs horsepower hp 900 rpm 1200 rpm 1800 rpm 3600 rpm t frames 1964 present u frame 1952 present original nema 1 15 2 3 5 75 10 15 20 25 30.