A.O. Smith 1 HP Full Rate Round Flange Motor - ST1102

$184.99

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Part # ST1102

By A. O. Smith

  4.79 Average  

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Part # ST1102

Dimensions 14" L x 6.5" W x 6.5" D

Alternate Part #'s 110283, 1104351428, 14542, 164565, 165112, 17328, 177025, 177483, 184948, 186915, 19993, 1K047, 317P856, 5KCR39SN2818X, 5KCR49SN2086X, 7-184948-22, 86598, 90118571, 91725, B128, B138, B708, C1100, C1488, C48I2N133, C48K2N123, C48K2N123A1, C48L2DA137, C48L2DB134A1, C48L2DB134A3, C48L2N102, C48L2N104, C48L2N106, C48L2N113, C48L2N119, C48L2N119A1, C48L2N122A1, C48L2N122A3, C48L2N131A1, C48L2N131A5, C48L2N131A6, C48L2N133, C48L2N133A3, C48L2N133A4, C48L2N134A1, C48L2N134B1, C48L2N134B3, C48L2N134B4, C48L2N134B5, C48L2N134C2, CT110C, EB128, EST1102, JD10FL1, M544, MTGC-1100, MTGC1100, S88-173, SPX1607Z1M, SPX1610Z1BEE, ST1102, SW2560, V14542

Product Description

Full Rated 1.0 HP motor; 3450 rpm, 115/230 Volts; 18.6/9.3 full load amps; 1.5 service factor; 56J frame

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
1 HP ST1102 Replacement Pool Motor
HP:
1 HP
Speed:
Single
RPM:
3450 RPM
Volts:
115/230 V
Amps:
18.6/9.3 amp
Service Factor:
1.5
Total HP:
1.5 HP
Frame:
56J
Stock #:
ST1102
Shaft:
Threaded
Overload Protector:
Auto
Dimension Letter:
AG
Dimensions:
12 - 1/8 in.
Commonly Used On:
Hayward Super II , Hayward Northstar Full Rate and Jacuzzi Magnum
Flange:
Round
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?     Asked on 5/31/2017 by Hella

Is this replacement for: C48L2N134C2? I am pretty handy and hope to change it myself. The current pump has gotten really loud (suspect bearings).

A     Answered on 5/31/2017 by InyoPools Product Specialist Hector F.

This ST1102 is the correct motor replacement for you.

?     Asked on 5/23/2017 by Srickland Family

Our pump has power when you turn it on, but it does not spin. It never fully comes on then shuts off. It's the AO Smith c48l2n134b1, by Hayward.

A     Answered on 5/25/2017 by InyoPools Product Specialist Scott W.

That sounds like the capacitor which is part number 5270-14.

?     Asked on 5/23/2017 by T

We need to replace our century pool motor. Here are the specs on the side part#184981 Fr U56J hp 1.0 sf 1.0 rpm 3450 volts 230/115 amp 6.9/12.0 Will this pump be a proper replacement?

A     Answered on 5/23/2017 by InyoPools Product Specialist Hector F.

Technically no, your motor model would be the 5211X.

?     Asked on 5/11/2017 by Steve

I have a A.O Smith ST1102 pump. when I shut the switch on the outside electric panel, the breaker inside the garage also switches off. What would solve this problem. The pump starts after it sets for about 15 min.s and will run for hours with no problem. motor stays cool to the touch.

A     Answered on 5/12/2017 by InyoPools Product Specialist Lennox H.

Hi, Steve. We can troubleshoot your motor using the info in our Pool Motor Troubleshooting Blog.

?     Asked on 2/15/2017 by Dave

I need to replace the motor on my jandy jhp1.o pool pumps Stealth. The motor is labeled ST1102 115/230 rpm 3450. What gaskets etc. would I need to replace. Thanks Dave

A     Answered on 2/15/2017 by InyoPools Product Specialist Megan C.

You may use the Tune Up Kit Jandy JHP + JHPU Pump Series - GOKIT77 . To view the complete Jandy Stealth Original (2006 and Prior) JHP & JHPU Parts Diagram, click here. 

?     Asked on 8/30/2016 by Thad

I have AO Smith ST1102 1HP C48L2N134C2 MOTOR AND THE START UP CAPACITOR HAS GONE OUT ON IT AND I CANNOT READ THE MARKINGS. DO YOU HAVE THE RIGHT SIZE CAPACITOR FOR THIS MOTOR?

A     Answered on 8/30/2016 by InyoPools Product Specialist Scott W.

The part number for the start capacitor for that motor is 5270-14.

?     Asked on 8/3/2016 by Bob

What is the flow rating on this pump in GPM?

A     Answered on 8/4/2016 by InyoPools Product Specialist Alan M.

This MOTOR does not have a GPM rating as found on pumps. The specs on this motor are: A.O. SMITH, ST1102, B128, HP 1.0, RPM 3450, Volts 230/115, Frame Size M56J, Phase 1, Motor Type CX, Frequency 60.

?     Asked on 7/4/2016 by Elizabeth Callahan

We have a Hayward pump housing and are looking to buy this ST1102 replacement motor. Can you tell us which seal we need to order, please?

A     Answered on 7/5/2016 by InyoPools Product Specialist Alan M.

The best way to determine the correct pump seal would be to identify the PUMP you have. The most common seal for Hayward pumps is the SHAFT SEAL 201 (GENERIC). Please verify the pump you have to ensure you are selecting the correct shaft seal.

?     Asked on 7/4/2016 by Elizabeth Callahan

We have a Hayward pump housing and are looking to buy this ST1102 replacement motor. Can you tell us which seal we need to order, please?

A     Answered on 7/5/2016 by InyoPools Product Specialist Alan M.

The best way to determine the correct pump seal would be to identify the PUMP you have. The most common seal for Hayward pumps is the SHAFT SEAL 201 (GENERIC). Please verify the pump you have to ensure you are selecting the correct shaft seal.

?     Asked on 6/29/2016 by Jeff

Hi, my question is..i have a Magnetec Century Centurion SP1610-Z-1-BEP, Part # 8-182260-C4, It has a Leslies Pool label Hydromax 2, Best replacement 1hp motor ? Thank you, Jeff

A     Answered on 6/29/2016 by InyoPools Product Specialist Megan C.

Hello, Jeff. You may use the Motor 56j Thrd Full Ee 1hp (b654) PART#5222AX or the A.O. Smith 1 HP Full Rate Round Flange Motor PART#ST1102. Do not forget to replace the SHAFT SEAL 201 (GENERIC) PART#5110-11 anytime you replace the motor. You may use the Leslie's Hydromax II Parts diagram for any other parts you may need.

?     Asked on 6/28/2016 by

I have an AO Smith ST1102 motor model # C48L2N134C2 which has a base on it. It is flange mounted to a Hayward pump. Does the motor come with a base? Thanks

A     Answered on 6/28/2016 by InyoPools Product Specialist Scott W.

The motor does not come with a base so you'd need to take the base off the old one.

?     Asked on 2/27/2016 by MITCH

IS US SEAL 200 THE CORRECT SHAFT SEAL FOR ST1102 PUMP MOTOR I ALSO HAVE A 201 PUMP SEAL

A     Answered on 2/29/2016 by InyoPools Product Specialist Lennox H.

Hi Mitch, We would need to know the manufacture and model of the pump housing that the motor connects to in order to confirm which shaft seal is needed.

?     Asked on 12/11/2015 by Justin

Is this motors rotation cw or cow or can it be either or?

A     Answered on 12/14/2015 by InyoPools Product Specialist Robert M.

Hello Justin - The rotation of the shaft is counter clockwise.

?     Asked on 11/21/2015 by Feras

Hi I have this kind of pump k48l2n105 My question is what pump is Mach the one I have ? And what about if I go with the cheapest 1 hp that you guys have

A     Answered on 11/23/2015 by InyoPools Product Specialist Lennox H.

Hi Feras, The A.O. Smith 1 HP Full Rate Round Flange Motor (ST1102) can be replace  the A.O. Smith 1 HP Full Rate Round Flange Energy Efficient Motor (CT1102) which would be the direct replacement for the MOD K48L2N105 motor. The ST1102 is cheaper up front but will cost more to operate than the CT1102 motor.

?     Asked on 10/27/2015 by Bill

Is the A.O. Smith Model ST1102 a replacement for the AO Smith C48A95A06? Please confirm. Thanks

A     Answered on 10/27/2015 by InyoPools Product Specialist Hector F.

No this is not the replacement motor and unfortunately we do not carry that replacement model.

?     Asked on 8/30/2015 by Bill

What size 0-ring/gasket is needed to seal connection between motor and housing? How can I tell from the label?

A     Answered on 9/2/2015 by InyoPools Product Specialist Lennox H.

Hi Bill, We would need to know the model of the pump housing in order to get you the replacement o-rings/gasket. If you can reply with that information I can help you locate those parts.

?     Asked on 7/7/2015 by george

I need to replace st 1102 motor c48l2n134c2 what do I order Hayward pool pump

A     Answered on 7/8/2015 by InyoPools Product Specialist Hector F.

The ST1102 is just the replacement motor. If you need to replace the entire pool pump then we would need the complete Hayward pump model. That model number is usually located on a small rectangular label on the pump housing and for the Hayward models it begins with an "SP".

?     Asked on 6/8/2015 by Mark

Is this the right replacement motor for a K48L2N1-4

A     Answered on 6/8/2015 by InyoPools Product Specialist Patrick P.

Hi Mark, Could you supply us with the following information off of your motor label.. HP, Amps, SF, FR and Volts.

?     Asked on 6/1/2015 by Phil

1102 AO Smith motors say ST1102 or UST1102 with a difference in price, are they interchangeable or what is the difference? have an old Hayward Super pump attached to it, old motor is CL48L2N133, pump in SX1610

A     Answered on 6/1/2015 by InyoPools Product Specialist Patrick P.

Hi Phil, The UST1102 and ST1102 are not interchangeable the ST1102 is a full rate motor and the UST1102 is an uprate motor. Could you email us your service factor (sf), amps, volts and HP off of your motor label, this would let us know which motor you need.

?     Asked on 5/16/2015 by Clyde Haley

I have a Hayward Super pump, 1H.P. motor, Model C48K2N143, 3450 rpm serial 8L95, frame 56-J. What is the correct motor, and what else do I need to install the motor ? Clyde

A     Answered on 5/16/2015 by InyoPools Product Specialist Andy O.

Clyde- The correct motor for your Hayward Super Pump is a UST1102, I would also recommend changing the shaft seal which you can get by itself, part number SPX1600Z2, or in a kit with some o-rings, which is part number GOKIT3.

?     Asked on 5/1/2015 by

The capacitor in my pool pump is suspect. The motor hums when turned on and is free to turn, not frozen or jammed. There is no marking on the capacitor so I can't evaluate it without knowing the capacitance value. The pump is a WMC AT 1800 that uses a magnetek century/centurion 1 HP motor. The label is badly faded but as near as I can tell the motor part no. is B-184981.21 and the cat No. is 8226SE type CX. Can you help me determine the capacitor value?

A     Answered on 5/1/2015 by InyoPools Product Specialist Lennox H.

Based on the motor number you provided  B-184981-21 the run capacitor is a 25MFD 370V. You can call Century at 866.887.5216 to verify.

?     Asked on 4/19/2015 by

Is there a size (dimensions) difference between the: 1/2, 3/4 and 1 HP motors?

A     Answered on 4/19/2015 by InyoPools Product Specialist Joe S.

Hello, yes each motor does get shorter from end cap to motor shaft

?     Asked on 4/10/2015 by Tom

What is the part number and bearing type for motor number ST1102? I can find the motor and I can find individual parts such as seals and bearings but I cannot find bearing listed for specific motors.at your website. Regards, Tom

A     Answered on 4/13/2015 by InyoPools Product Specialist Robert M.

Hello Tom - The ST1102 would require two 203 bearings.

?     Asked on 11/9/2014 by Vickie

What is the warranty on this motor?

A     Answered on 11/10/2014 by InyoPools Product Specialist Robert M.

Hello Vickie - The warranty for the Century ST1102 is one year.

?     Asked on 5/2/2013 by Guest

My pump makes a loud high pitched screaming noise when running. The pump moves the water well but the noise is very loud. Would replacing the seals eliminate my noise problem?

A     Answered on 5/2/2013 by InyoPools Product Specialist Patrick P.

If the motor is making a loud, screeching noise while it's running, the bearings have likely failed. Replacing the seals alone will not resolve the issue. The motor and seals  should be replaced.

?     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 1/12/2012 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.

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