# What is the frame number on a electric motor?

## What is the frame number on a electric motor?

The two-digit frame number relates to the shaft height in sixteenths of an inch. You can figure that a 48-frame motor will have a shaft height of 48 divided by 16, or 3 in. Similarly, a 56-frame motor has a shaft height of 3.5 in.

What is a 56 frame electric motor?

The derivation of the two digit frame number is based on the shaft height in sixteenths of an inch. You can figure that a 48 frame motor will have a shaft height of 48 divided by 16 or 3 inches. Similarly, a 56 frame motor would have a shaft height of 3-1/2 inches.

What does TC mean on motor frame?

Three-Phase Cast Iron T-Frame. TC-Frame (C-Face) TEFC Motors – Three-Phase Industrial Duty – 1 to 100 hp.

### How can you identify an electric motor without nameplate?

When testing a polyphase motor without nameplate information, we will not know the number of poles unless we perform a rotor influence check. The best way to do that is to test the motor as the rotor is stepped in 5 degree increments.

What are the dimensions of an electrical motor frame?

Electrical Motors – Frame Dimensions. Dimensions of electrical motor frames according NEMA 1984 are indicated below: 1 in (inch) = 25.4 mm. NEMA Frame Designation. Frame Dimensions (inches) D. E.

What does the t stand for on an electric motor frame?

There is a letter suffix after the frame number that has been standardized by NEMA (National Electrical Manufacturer Association) regulations. These are commonly noted as a “T” on the nameplate.

## What does a Z mean on a motor frame?

Take “Z” for example, this means there was special machining done to the shaft to make it different from the standard stocked motor. You should also be aware of motor repair shops modifying a shaft and not stamping the “Z” on the frame.

How big is the base of a NEMA motor?

# Discontinued NEMA frame. ** Base of 56HZ frame motors has holes and slots to match NEMA 56, 56H, 143T and 145T mounting dimensions. @ Certain NEMA 56Z frame motors have 1/2″ x 1 1/2″ long shaft with 3/64″ flat. These exceptions are noted in the General Catalog.