Critical mounting dimensions for all manufacturers are as defined in nema standard mg 1.
T frame motor meaning.
C round flange with keyed shaft these motors have a notch that runs the length of the exposed motor shaft.
The j frame features a threaded shaft for impeller installation.
Suffixes to nema frames and what they mean.
U a u indicates that the motor is of the 1952 1964 u frame vintage.
No details may be assumed regarding this designation.
J round flange with threaded shaft this is the standard for round flange motors for modern pumps.
This motor is a modern standard t frame motor.
Electrical motor shaft power electrical motors are rated in horsepower or watt.
Nema motor dimensions reference chart a ft e r l e t t e r i n d i c a t e s t h e n u m b e r i s a n app r o x i m a te v a l ue.
T frame motor designs are based on utilizing class b insulation with a temperature rating of 130 c.
To accommo date the larger mechanical horsepower capability shaft and.
Base of 56hz frame motors has holes and slots to match nema 56 56h 143t and 145t mounting dimensions.
T frame motor designs are based on utilizing class b insulation with a temperature rating of 130 c.
Sizes ran at very low temperatures.
Y a y indicates that the motor has a special mounting configuration.
The third numeral indicates the distance between the mounting holes parallel to the base.
The motor designs were such that the capability would be used at the hottest spot within the motor.
The u frame motors were designed for use with class a insulation which has a rating of 105 c.
Certain nema 56z frame motors have 1 2 x 1 1 2 long shaft with 3 64 flat.
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.
K sump pump motors.
See nema mg1 1998 18 78 for example.
Y square with threaded shaft y frame motors feature a square metal flange for bolting to the pump housing.
These motors are generally made to manufacturers specifications.
284 frame is 28 4 7 d 7 lp or lph.
Electrical motor efficiency ratings nema electrical motor efficiency ratings.
Discontinued nema frame.
By nema definition two digit frame numbers are fractional frames even though 1 hp or larger motors may be built in them.
Dimension of a 213 frame motor is 5 21 divided by 4 5.
Three digit frame numbers are by definition integral frames.
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.
Standard short shaft for direct drive applications.
Electrical motors full load amps full load currents for 460 volts 230 volts and 115 volts motors single and 3 phase.
T a t indicates that the motor is of the 1964 and later t frame vintage.
