T Frame Motor Meaning

Suffixes to nema frames and what they mean.

T frame motor meaning. This increase in temperature capability made it possible to pack more horsepower into the same size frame. The third numeral indicates the distance between the mounting holes parallel to the base. To accommo date the larger mechanical horsepower capability shaft and. Electrical motors full load amps full load currents for 460 volts 230 volts and 115 volts motors single and 3 phase.

Standard short shaft for direct drive applications. K sump pump motors. U a u indicates that the motor is of the 1952 1964 u frame vintage. Y square with threaded shaft y frame motors feature a square metal flange for bolting to the pump housing.

The motor designs were such that the capability would be used at the hottest spot within the motor. Discontinued nema frame. 284 frame is 28 4 7 d 7 lp or lph. Certain nema 56z frame motors have 1 2 x 1 1 2 long shaft with 3 64 flat.

This t frame motor has a standard nema defined c. Electrical motor efficiency ratings nema electrical motor efficiency ratings. This motor is a modern standard t frame motor. The j frame features a threaded shaft for impeller installation.

C round flange with keyed shaft these motors have a notch that runs the length of the exposed motor shaft. By nema definition two digit frame numbers are fractional frames even though 1 hp or larger motors may be built in them. T a t indicates that the motor is of the 1964 and later t frame vintage. Base of 56hz frame motors has holes and slots to match nema 56 56h 143t and 145t mounting dimensions.

Sizes ran at very low temperatures. 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. No details may be assumed regarding this designation. Critical mounting dimensions for all manufacturers are as defined in nema standard mg 1.

T frame motor designs are based on utilizing class b insulation with a temperature rating of 130 c. Dimension of a 213 frame motor is 5 21 divided by 4 5. These motors are generally made to manufacturers specifications. Y a y indicates that the motor has a special mounting configuration.

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. Motors designated 56h have two sets of 2f mounting holes 3 and 5. See nema mg1 1998 18 78 for example. Three digit frame numbers are by definition integral frames.

J round flange with threaded shaft this is the standard for round flange motors for modern pumps. The u frame motors were designed for use with class a insulation which has a rating of 105 c.