Cage 3 phase induction motors lower than 1000v and smaller than 315 frame size can safely run continuously at the speed in the table below.
Dc motor frame size dimensions.
Iec variable speed dc motors integral hp standard motor features this catalog is designed to help motor users quickly select and specify the proper baldor reliance industrial direct current motor.
Base of 56hz frame motors has holes and slots to match nema 56 56h 143t and 145t mounting dimensions.
These exceptions are noted in the general catalog.
Nema motor the ba dimensions are.
Dimension v is shaft length available for coupling pinion or pulley hub this is a minimum value.
You can figure that a 48 frame motor will have a shaft height of 48 divided by 16 or 3 inches.
Dimensions of electrical motor frames according nema 1984 are indicated below.
Frame size information on standard motors is given on the frame size pages.
Certain nema 56z frame motors have 1 2 x 1 1 2 long shaft with 3 64 flat.
You can figure that a 48 frame motor will have a shaft height of 48 divided by 16 or 3 inches.
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Frame size 2 pole 4 pole 6 pole 100 5200 3600 2400 112 5200 3600 2400 132 4500 2700 2400 160 4500 2700 2400.
Similarly a 56 frame motor would have a shaft height of 3 1 2 inches.
Keyseat dimensions frame 42 48 56 56h 143t 145t 182 184 182t 184t 213 215 213t 215t 254u 256u 254t 256t 284u 286u 284t 286t 284ts 286ts 324u 326u 324t 326t 324ts 326ts 364u 365u 364t 365t 364ts 365ts 404u 405u 404t 405t 404ts.
For the squirrel cage 3 phase induction motors of 1000v or lower.
In frame number 145 for example the first two digits divided by the constant 4 is equal to the d dimension 14 divided by 4 3.
Similarly a 56 frame motor would have a shaft height of 3 inches.
1 in inch 25 4 mm 1 inch 25 4 mm sorry to see that you are blocking ads on the engineering toolbox.
The derivation of the two digit frame number is based on the shaft height in sixteenths of an inch.
The largest of the cur rent fractional horsepower frame sizes is a 56 frame that is available in horsepower greater than those normally associ ated with fractionals.
