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

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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.

## 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. … Specifically “Frame” refers to the diameter of the armature in the motor. Although 2 motors may have the same horsepower rating, a 56-Frame motor will be 40% larger.

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

The only difference between the 56Y and 48Y frame is the circumference of the motor. They will both mount to the seal plate of the pump. Because of the different motor sizes, you will need to adjust the relative heights of pump and motor so that they line up properly if you mix the frames.

## 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 56 frame?

Height (inches) Height (cm) Frame Size (cm)
5’5″ – 5’7″ 160 – 165 52 – 54 (Small – Medium)
5’7″ – 5’9″ 170 – 175 54 – 56 (Medium)
5’9″ – 5’11” 175 – 180 56 – 58 (Medium – Large)
5’11” – 6’2″ 180 – 188 58 – 60 (Large)

## What is pump frame size?

Motor Frame Size

The physical size of the spa pump motor is referred to as frame. Spa main pumps have a size of either 48 frame (approx. 5.5″ diameter), or 56 frame (approx. 6.5″ diameter).

## How are frame pumps measured?

Most frame pumps come in multiple lengths. Find the size that fits your frame by measuring from the front of the seat tube to the rear of the head tube. If your frame has a pump peg, measure from the inside of the peg to the inside of the seat tube. Secure it.

## What is 48Y frame on motor?

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.

## 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.

## Are pool pump motors interchangeable?

The motor on a pool pump will often fail before the pump itself needs to be replaced. Replacing just the motor is a common fix. Motors are generally interchangeable amongst many types of pumps, and there’s currently no standard for replacement motors.

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## How do you read a motor frame number?

Typical examples are frame numbers 48, 56, 145, and 215. The frame number relates to the “D” dimension (distance from center of shaft to center bottom of mount). For example, in the two-digit 56 frame, the “D” dimension is 31/2”, 56 divided by 16 = 31/2”.

## What are 4 common types of motor enclosures?

The most common types of enclosures are:

• Open Drip Proof (ODP) …
• Weather Protected (WP1 / WP2) …
• Totally Enclosed Fan Cooled (TEFC) …
• Totally Enclosed Non-Ventilated (TENV) …
• Totally Enclosed Air Over (TEAO) …
• Totally Enclosed Forced Ventilated (TEFV) …
• XP (Explosion Proof)

## What frame size do I need?

It’s mainly because the leg inseam measure is more accurate. RELATED In-Between Two Bike Sizes – How To Choose?

#1 – Simple Size Chart.

5’3″ – 5’7″ 15 – 16 inches
5’7″ – 5’11” 16 – 17 inches
5’11” – 6’2″ 17-19 inches
6’2″ – 6’4″ 19 – 21inches