What is the difference between 48 Frame and 56 Frame motor?

What does 48 frame pump mean?

48-Frame motors are basically pool motors, not designed for the rigors of hot tubs with their high-pressure massage jets. Never-the-less, several of the best known hot tub manufacturers continue to use 48-Frame motors, as do discount brands including Leisure Bay.

What does motor frame size mean?

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 size is a 48 frame motor?


Nema Series D H
48 3 11/32 Slot
56 56H 3 1/2 11/32 Slot
143T 145T 3 1/2 11/32
182T 184T 4 1/2 13/32

When should I replace my pool pump motor?

How long do pool pumps last? Your pool pump should be replaced anywhere between 8 to 15 years depending on the quality, and a full replacement may cost over $800. Your pool pump is the “heart” of your swimming pool as it circulates water throughout, bringing water through the filtration and heating systems.

What is frame size on pool pump?

Difference Between 48 Frame & 56 Frame Pump

Hot tub pumps typically come in two different frame sizes: 48 frame and 56 frame. When replacing a hot tub pump, it is important to replace it with the same size pump so that the holes and plumbing will line up.

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What type of shaft does a 56Y frame motor have?

Its large 6.5 frame boasts a stainless steel shaft for extremely durable housing and its thermally protected, Class B insulated design keeps the motor cool to prevent overheating.

What is a NEMA frame motor?

There are many motors of the same horsepower built in different frames. 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.

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.