Nema Motor Frame Prefixes

284 frame is 284 7 d 7 lp or lph. Prefix letters are often used bymanufacturers such as g184t to indicate the overall length of the motor but do not denote differances in the nema standardised mounting dimensions. The signifi cance from one manufacturer to another will vary.
nema motor frame prefixes

Nema Motor Frame Sizes

Electric Motors Gear Reducers Gear Motors Variable Speed Drives

Nema Motor Frame Sizes 34wmwj6ppzl7

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 prefixes. Frame size chart frame sizes pdf nema frame dimensions including for newer. A dc motor or generator c face mounting on drive end s flange mounting on drive end p vertical hollow and solid shaft motors with p base flange. Nema frameshaft sizes frame numbers are not intended to indicate electrical characteristics such as horsepower. 803 324 3259 standard nema frames vs.

There are many motors of the same horsepower built in different frames. Nema prefixes letters or numbers appearing in front of the nema frame number are those of the manufacturer. D dimension shaft height of a motor or generator in these frame sizes equals the value of the first two digits in the frame number. Motors having no suffix letters other than nema frames 42 48 56 are built prior to nema standards.

There is no standardization of prefixes and you must check with the manufacturer to learn the meaning of a prefix. They have no nema frame significance. For example the letter in front of leesons frame number l56 indicates the overall length of the motor. Nema c face motors also have rigid base have different ba dimensions in the following instances 3143tc.

Suffixes to nema frames and what they mean. Hp vertical solid shaft motors with p base flange normal thrust. They have no nema frame significance. And nema suffixes c nema c face mounting specify with or without rigid base.

Jm close coupled pump motor with c face mounting and special shaft extensions. However as a frame number becomes higher sc in general does the physical size of the motor and the horsepower. 800 868 3770 fax. For example the letter in front of leesons frame number l56 indicates the overall length of the motor.

Nema national electrical manufacturers. 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. Manufacturer variations nema prefixes manufacturers use prefixes to specify variations within a frame size such as the overall motor length. Frame size designations nema iec frame shaft height in shaft height mm frame shaft height in shaft height mm 63 2480 63 42 2625 66675 71 2795 71 48 30 76200 80 3150 80 56 140t 35 88900 90 3543 90 100 3937 100 180t 45 114300 112 4409 112 210t 53 133350 132 5197 132.

Frame prefixes letters or numbers appearing in front of the nema frame number are those of the manufacturer. See nema mg1 1998 1878 for example. K sump pump motors.