Century 3/4 HP Round Flange 56J Up Rate EE Motor - UCT1072



Part # UCT1072

By Century Motors

  4.8 Average  



Part # UCT1072

Warranty 1 Year

Alternate Part #'s K48A71A04, K48J2N100A2, UCT1072

Product Description

Replace your  Pump Motor with an Energy Efficient model UCT1072.  Our Energy Efficient UCT1072 replacement motor cost roughly 33% less to operate than the standard UST1072  replacement motor.  In most states you will recoup the cost difference between the standard motor and Energy Efficient Motor within 4-6 months. 

Voltage 115/230, Max Amps 115V = 8.0 230V = 4.0, Single Speed, Round Flange, RPM = 3450, Threaded Shaft, Frame = 56J

Used on the following models: Hayward Max Flow, Hayward Super Pump, Hayward Super II, Hayward Northstar and Jacuzzi Magnum pumps.

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
0.75 HP UCT1072 Replacement Pool Motor
0.75 HP
3450 RPM
115/230 V
8/4 amp
Service Factor:
Total HP:
0.75 HP
Stock #:
Overload Protector:
Dimension Letter:
11 in.
Commonly Used On:
Hayward Max Flow, Hayward Super Pump, Hayward Super II, Hayward Northstar and Jacuzzi Magnum
Energy Efficient:
Energy Efficient
California Title 20 Compliant

?     Asked on 11/2/2019 by Vass

Is this a suitable replacement for an HST080 motor?


A  Answered on 11/4/2019 by InyoPools Product Specialist Lennox H.

Hi, Vass. Yes, you can use this UCT1072 motor to replace the HST080. 

?     Asked on 10/22/2019 by J R Sandoval EA

Will this motor replace a Hayward sp3010x15az super 2 pump 1.5? Thanks

A  Answered on 10/22/2019 by InyoPools Product Specialist Lennox H.

Hi, JR. Only if you replace the Impeller and the matching components. Otherwise, you will have to use the UST1152 motor. 

?     Asked on 6/9/2019 by Bob

Is this a self priming pump? My original says self priming on it. I have a C48J2N131B1

A  Answered on 6/9/2019 by InyoPools Product Specialist Michelle B.

Hello,This will be the correct motor you will need for your pump.http://www.inyopools.com/Products/00200017001330.htm?Keywords=C48J2N131B1The motors will not be self-priming. That would be the pump portion.

?     Asked on 5/31/2019 by Xyz

What size breaker is needed

A  Answered on 5/31/2019 by InyoPools Product Specialist Matt S.

The motor uses eight amps on 115-volt and four amps per line on 220-volts. You would need enough room on a breaker to accommodate those amp totals.

?     Asked on 4/8/2019 by bob

Will this pump motor fit on a SP1605-z-1-MBK. Part no currently is a 8-177018-24

A  Answered on 4/10/2019 by InyoPools Product Specialist Michelle B.

Hello, This will be the correct motor for your pump.http://www.inyopools.com/Products/00200017001330.htm

?     Asked on 2/27/2019 by Jeremy

I have a Hayward super pump model sp2605x7. It currently has an Emerson k53cxepw-4765 3/4 hp motor that has seized up. It has a Hayward sand filter model s220t. My pool is 26,000 gallons. Is this a suitable replacement?

A  Answered on 2/28/2019 by InyoPools Product Specialist Steve M.

Yes Jeremy the A.O. Smith 3/4 HP Round Flange 56J Up Rate EE Motor - UCT1072 could work as a replacement for your Emerson k53cxepw-4765 3/4 hp motor that is paired with your super pump model sp2605x7.  

?     Asked on 1/2/2019 by Dick

will this replace a Hayward Super Flow Century 3/4hp 1081


A  Answered on 1/2/2019 by InyoPools Product Specialist Kevin G.

Hello, the motor that you will need is the 5221X.

?     Asked on 10/9/2018 by Tim

What makes this motor 33% more efficient than a standard one?

A  Answered on 10/10/2018 by InyoPools Product Specialist Hector F.

These energy efficient single speed motors draw less amperage than the standard motors hence potentially saving up to 33 percent in electrical costs. 

?     Asked on 9/6/2017 by mike

Wil this motor work for a relacement of model C48J2N131B1?

A  Answered on 9/8/2017 by InyoPools Product Specialist Lennox H.

Hi, Mike. Yes, this UCT1072 motor will replace model # C48J2N131B1. 

?     Asked on 6/7/2017 by Janet

Will this replace A.O.Smith/Century Centurian part# 7-184980-23?

A  Answered on 6/7/2017 by InyoPools Product Specialist Hector F.

No, your replacement motor would actually be the model 5210X.

?     Asked on 5/25/2017 by

is this motor 3450 rpm

A  Answered on 5/25/2017 by InyoPools Product Specialist Patrick P.

Yes this motor is 3450 RPM

?     Asked on 3/19/2017 by Ed Rivera

will this motor work as a replacement for an A.O.Smith model K48K2N104 SER 8C05

A  Answered on 3/20/2017 by InyoPools Product Specialist Andy O.

Hello Ed- The A.O. Smith 1 HP Energy Efficient Round Flange Up Rate Motor - UCT1102 is the correct replacement for your k48k2n104 motor.

?     Asked on 3/3/2017 by Doug2uToo

I have a .75hp AOSmith UST 1072 motor and bot a Century UCT 1072. Besides the energy efficiency difference of the motors, what is the difference between a Century and AOSmith motor. The new motor looks reconditioned on the face of the plate where the shaft comes through.

A  Answered on 3/6/2017 by InyoPools Product Specialist Lennox H.

Hi, A.O. Smith is now Century so there is no difference between the two motors.

?     Asked on 1/29/2017 by

Will this motor work as a replacement for a A. O. Smith Part 7-193631-24 Type CX FRS56J motor on my JHP 475 Jandy Pump?

A  Answered on 1/30/2017 by InyoPools Product Specialist Scott W.

Yes, the UCT1072 will work on the JHP and the shaft seal for that motor installation is part number 5020-009.

?     Asked on 12/31/2016 by Townsend Thomas

My current 3/4 hp motor is connected to a gear box to reduce the speed and drive a pool cover takeup. This is the second time this motor has failed due to the potted electronics package which reverses the rotation. Can I pull the run capacitor out of a new motor and use my own reversing relay? I'm a EE with 5 years in motor control design.

A  Answered on 1/4/2017 by InyoPools Product Specialist Adam Y.

Good morning Townsend, It is possible but I would talk to someone with A.O smith. 1-800-262-6484. Let us know how it works out. Your question and design could possibly be beneficial to future motor designs and products.

?     Asked on 7/27/2016 by Shelly

I have an AO Smith model B127 3/4 HP super pump motor and am looking to replace it because the bearings are going out and it's inefficient. I added solar heating panels and a salt generator 2 yrs ago and am thinking I should increase the HP. What would you recommend? Thank You

A  Answered on 7/28/2016 by InyoPools Product Specialist Scott W.

I'll need to know what model filter you have to know if it would be able to handle the increased flow rate of a higher horsepower motor. If you are needing more horsepower for your solar panels, then you would want to start there. Would hate to have you get a bigger motor and blow your filter out because it can't handle the flow rate. If you don't know what the model of your filter is, you can attach some pictures of the filter and I'll be able to identify it that way.

?     Asked on 1/19/2012 by 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 1/18/2012 by Guest

I'm trying to find a replacement motor for my pool pump but my model number doesn't match what you have listed as the model number. My model number begins with a C48 and yours begins with an SP. Please help.

A  Answered on 1/18/2012 by InyoPools Product Specialist Patrick P.

What we have listed on our chart pages is the pump model number. The model number you have will just identify the motor. If you look on the plastic housing on the pump there should be a sticker which will have the pump model number. You can usually find this by the discharge port on the pump. Once you locate it you can choose the correct replacement motor. Be certain to change the shaft seal and gaskets as needed. You can use our >How to guide if you need help. 

?     Asked on 1/12/2012 by 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 1/12/2012 by 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 1/11/2012 by 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

1 to 2 hrs

Tools Needed

Screwdriver, Pliers, Socket Set, Adjustable Wrench

Corroded pump due to a bad seal

Written on 10/7/2018 by Guest

Followed the inyo pools instructional guide and it was detailed enough for a novice!

Were these instructions helpful? 


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