# What does 48 frame motor mean?

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## What size is a 48 frame motor?

Electrical motors NEMA frame dimensions.

NEMA Frame Designation Frame Dimensions (inches)
D N-W
42 2 5/8 1 1/8
42C 2 5/8 1 1/8
48 3 1 1/2

## What does frame size mean on motors?

NEMA (National Electrical Manufacturers Association) frame size refers to mounting only and has no direct bearing on the motor body diameter. In any standard frame number designation there are either two or three numbers. Typical examples of frame numbers 48, 56, 145, and 215.

## Can I replace a 48 frame spa pump with a 56 frame?

Almost all spa pumps are manufactured in one of two standard frame sizes: 48-Frame and 56-Frame. If you want to replace your wet end or your motor, you should use an equivalent of the same size, so that the mounting holes between the motor and the wet end align.

## What does motor frame tell you?

The longer the motor body, the longer the distance between mounting bolt holes in the base (greater F dimension). For example, a 145T frame has a larger F dimension than does a 143T frame. The term “fractional horsepower” covers those frame sizes having two-digit designations, as opposed to three-digit designations.

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## What is the difference between 48 and 56 frame motor?

The main difference between a 48 frame and a 56 frame hot tub pump is that the 48 frame has a smaller motor housing and so the 4 through bolts that fasten the wet end to the motor are closer together on the smaller motor.

## How do I find out my motor frame size?

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 is meant by frame size?

Frame size generally refers to frame height, the length of the seat tube from the bottom bracket (crank bearing) to the top tube.

## What is frame size of induction motor?

Frame size, Motor Power and Motor current values for a typical 4 pole, 400v motor.

Frame sizes, power and current.

Motor Power (kW) Motor Current (Amps) Frame Size
4 8.2 112
5.5 11 132
7.5 14.5 132
11 20.5 160

## What is a 184 frame motor?

A motor’s frame size is a reference to the size of the mounting footprint, shaft diameter, and shaft length. These motors are all frame size 184. In terms of mounting, these motors can replace each other and other motors with the same frame size.

## What does 48Y frame mean?

The Flex-frame motors are usually labeled as 48Y, but will have the distinct pedestal at its base. The Flex is unique because it uses four thin partially threaded screws (known as thru bolts) that are slid the length of the motor through the back end and screwed into the seal plate.

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## What is pump frame?

A frame pump is a portable pump that’s designed to fit within a frame and become a part of the bike’s front triangle until it’s needed. All currently-available frame pumps feature internal springs and are designed to be retained along the top tube or down the seat tube.

## How do you read a motor nameplate?

The RPM listed on the nameplate is the shaft speed for the motor. The speed of the motor is directly related to the frequency of the line voltage and the number of poles in the motor. At 60 Hz, a 4 pole motor will rotate at approximately 1800 RPM (7200/4 poles).

## How do I find my motor details without nameplate?

Use a strobe tachometer to determine motor RPM and then set up a generic motor in the database for that RPM. If loading cannot be provided by the operator use the acquired data and RPM to approximate loading. You can view the power factor for a value around 88 to 92 to approximate full load.

## What useful information is obtained from the motor frame type?

The frame size data on the nameplate is an important piece of information. It determines mounting dimensions such as the foot hole mounting pattern and the shaft height. The frame size is often a part of the type designation which can be difficult to interpret because special shaft or mounting configurations are used.