Century 3/4 HP Round Flange 56J Full Rate EE Motor - CT1072



Part # CT1072

By Century Motors

  4.75 Average  



Part # CT1072

Warranty 1 Year

Alternate Part #'s 14449, 19935, 3K103, 52009, 89935, 91711, B632, B634, B638, B989, C1437, CT1072, CT207CE, EB638, ECT1072, JD75FL1E, K48A82A04, K48J2N103, K48K2N100A1, K48K2N104, MFK-19935, SP1605Z1BE, 35-126-3058, AOS-60-5210, AOSCT1072

Product Description

Voltage 115/230, Max Amps 115V = 11.0 230V = 5.5, Single Speed, Round Flange, RPM = 3450, Threaded Shaft, Frame = 56J Used on the following FULL RATE ENERGY EFFICIENT models: Hayward Super II Energy Efficient, Hayward Northstar Full Rate and Jacuzzi Magnum Full Rate pumps.

Note: NOT California Title 20 Compliant. 

California Title 20 Compliant Options:


Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
0.75 HP CT1072 Replacement Pool Motor
0.75 HP
3450 RPM
115/230 V
11.0/5.5 amp
Service Factor:
Total HP:
1.13 HP
Stock #:
Overload Protector:
Dimension Letter:
11 - 11/16 in.
Commonly Used On:
Hayward Super II , Hayward Northstar Full Rate and Jacuzzi Magnum
Energy Efficient:
ULTRA Energy Efficient

?     Asked on 10/9/2021by John Buckwalter

I'm replacing a Century Centurion Cat. B227SE Serial 056083M Part 7 - 184980 - 23 1081 Pool Pump Duty mount Can you all tell me if this is compatible and what impeller kits I will need to get back to my skimmer basket? Thanks, John

A  Answered on 10/12/2021 by InyoPools Product Specialist Craig C.

Hello John.  The Century Motors 3/4 HP Full Rate EE Motor model CT1072 is a compatible replacement motor for the Century Motors 3/4 HP Up Rate Motor model B227SE.    The direct replacement would be the Century Motors B227SE.    Century 3/4 HP Up Rate Motor - B227SE  Any additional parts related to the motor change would be specific to the pump manufacturer/model.  Manufacturer/model information can be found on the pump identification plate/sticker.  If this information is no longer visible or available, please provide several photos of the pump inclusive of the inlet and outlet plumbing to assist in identification. 

?     Asked on 6/27/2018by Darin Sise

My original water feature pump, 16 years old & exposed to elements, stopped working and figured the motor is toast...and it is. It is an A.O. Smith, Model # K48K2N104, Ser 8F02. This motor looks like it may replace this motor. Am I correct?

A  Answered on 6/27/2018 by InyoPools Product Specialist Hector F.

Yes, this is a correct replacement motor for your model K48K2N104 motor. 

?     Asked on 8/3/2015by Robert Sloa n

I have a Hayward super pump rated at 2.0 hp. It is too powerful for my filter. Can I switch motors to step down the pressure I am getting from the pump?

A  Answered on 8/4/2015 by InyoPools Product Specialist Patrick P.

Hi Robert, You could step down motor's but you would just need to make sure that you replace your impeller with the same HP as the new motor. You may view the Hayward Super Pump Impeller's on our Hayward Super Pump Parts Breakdown Page.

?     Asked on 1/19/2012by Guest

I'm trying to replace the motor on my pool pump but all these numbers and abbreviations on the motor label are really confusing me. What do they mean?

A  Answered on 1/19/2012 by InyoPools Product Specialist Patrick P.

Replacing a pool pump motor is not as difficult as it seems. You can try looking here. If you need help figuring out what the information on your label means. If you are still having difficulty figuring it out you can call us at our toll free number or you can send us a photo of your motor label here.

?     Asked on 1/12/2012by Guest

Why should I purchase a Tune Up Kit?

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

A Tune Up Kit includes all of the essential replacement seals and gaskets for the pump. The seals and gaskets should be replaced when installing a new motor on your pump. New seals will prevent the pump from leaking water or losing the prime. A Tune Up Kit will protect your motor and ensure that the pump is working efficiently.

?     Asked on 1/12/2012by Guest

Why do I need to purchase a new shaft seal?

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

We strongly recommend replacing the shaft seal. The purpose of a shaft seal is to prevent water from running down the shaft of the motor and into the motor housing. Water will damage the bearings and cause the motor to fail. A new shaft seal should be installed whenever a motor is replaced. The motor manufacturer can deny the warranty if the motor fails to due to water damage from a faulty shaft seal. To find your shaft seal you will need to visit our Pool Pump Parts Page or the Spa Pump Parts Page and select your make and model.

?     Asked on 1/11/2012by Guest

What is Service Factor?

A  Answered on 1/11/2012 by InyoPools Product Specialist Patrick P.

Service Factor(SF) is a multiplier that when multiplied by the horsepower of the motor indicates the total permissible horsepower loading that may be carried when the motor is operating at rated voltage and frequency. The most important thing to remember when replacing a motor is that the replacement motor's horsepower times its service factor must be equal to or greater than the original motor's horsepower times its service factor. The Service Factor rating can be found on the motor label. See Step 4 of our How to Read a Pool Motor Label guide.


Est. Repair Time

2 to 4 hrs

Tools Needed

Screwdriver, Pliers, Socket Set, 9/16 box wrench

24 yr old motor very hard to start and leaking

Written on 2/10/2022 by Guest

Very very happy that I was able to replace this old motor but all the print had faded off and I wasn't sure how many HP the pump had made it difficult to order a new one to ensure it would match up with my pump. Ive been trying to figure this out for quite some time. I learned from Inyo Pools that you can take the motor off and look at the impeller PN# and reverse engineer by researching the impeller PN# to see what HP it was designed for. Once I found out the HP I immediately ordered the Century energy efficient model, a "Go Kit" seal kit and new impeller ring and flange. Before I took the motor off the pump I shocked the pool and let it run for several hours, then turned off the 220 circuit breaker and removed the pump, took pictures of the timer wiring with my phone. Worked on breaking down the motor by removing the impeller and old seal and set the motor aside until the new one arrived. Box arrived in very good condition with the other parts inside, everything was in very good condition upon arrival and .... shipping was free! I took the electrical whip off the old motor and wired it to the new motor, took the pump parts off the old motor, cleaned them up, and installed them on the new motor. Inyo pools sent videos from their knowledge base and I watched the videos on how to install the Go-Kit seals, flange and impeller ring, and everything went accordingly and fit perfect. I installed the new Impeller ring and Round Flange per InyoPools video. After the motor was ready, I brought it the pump and installed the new round seal after lubricating it with the lube provided with the Go-Kit. Motor slid right in, bolted up perfect, I then re-attached the wiring whip to the timer, turned the circuit breakers on and the moment of truth was upon me. I flipped the switch to "on" and the pump came to life making very little sound or noise and fired right up! the pump is very quiet and energy efficient and I am very satisfied and proud of replacing the motor and seals myself and saving a lot of $$$. Another perfect DIY job!

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Review Summary

 (Average 4.75  out of 5 stars)
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