Century UST1102 1-Horsepower Up-Rated Round Flange Replacement Motor (Formerly A.O. Smith)

I used to be in the business and have installed hundreds of these on pumps where the motor has failed and the cost of repair was not justified by age. When installed properly, they are a solid motor and will last on average 6-7 years of constant summer use before anything needs to be done. And when it does need something it is usually to replace the capacitor on the back end, something that a teenager could do with a screwdriver and a pair of needle nose pliers. The capacitor is basically the starter battery and they wear out. Also be sure to keep the area under the motor clear of leaves, debris, and dirt. These are motor killers because they end up going up through the vents and onto the windings [copper wire coils] and the motor can't vent properly. Even getting 10-15 degrees over normal operating temp will wear out a motor faster. When installing these, it's not tricky but you need to know two things about doing so if you want the motor to work properly and last: 1) Install a replacement shaft seal and do the whole thing, not just half of it. They are cheap and there's no reason not to. It will take you two minutes. Old seals fail and when that happens, the motor will be subject to spray coming from the pump end of it. 2) When tightening the mount bolts, don't crank down one and then move onto the next and crank that one down. Tighten all 4 fairly evenly, moving around the motor to tighten each one another couple of turns and keep going until they are all tight - - but only hand tight. There's no reason to strip them out. If you don't tighten the bolts evenly, the motor will sit in at a very slight angle, and this causes tremendous wear on the motor. If you install them evenly, you will have years of service from the motor.

Bought to replace Heyward motor. Works great and much cheaper!!!

This motor was a perfect fit/replacement for my older Century motor (C48K2N143B1) that was on my Hayward SP1607Z1M Super pump. My old pump had water get in the front of the motor housing and it either trashed the bearings and/or something that was part of the winding/brush assembly. It sounded like a rock tumbler & was extremely hot to the touch and started to discolor the paint & peel the label. I elected to replace it prior to a surprise/complete failure. Some things to note when shopping for a replacement motor, based on what I learned in my journey to save several hundred $ by not replacing the entire pump assembly. You must match your motor frame of your new motor to the old one; it's abbreviated FR on the motor label. In this motor case it's a 56J. Ensure you match the pump horse power and service factor, or else you will need to potentially buy a new impeller rated for the new motor size. I would also recommend you buy a seal kit for your pump prior to assembly. The old seals are likely leaking by the time the pump fails (mine definitely were) and new seals will protect your investment. Installing the new motor was relatively easy. You need a 7/16" box end wrench for holding the rear of the drive shaft while tightening the impeller on the end of the drive shaft. This has standard threads, so righty tighty/lefty loosey... It did take a little work to get the impeller off the old motor and I busted an old rubber strap wrench in the process. I ultimately used the old rubber strap as a cushion and a large channel lock wrench to grip the end of the impeller and was able to remove the impeller and reinstall it on the new motor. You also need to carefully remove the starter capacitor via the Phillips head screw that holds it in place to gain access to the rear of the drive shaft. You can leave the wires connected, but it does need to be tipped out of the way to reach the drive shaft, then re-secured afterwards. The worst part of installing these motors is if you have solid heavy-gauge wiring like I did. 12 gauge solid wire does not like to bend, and it makes the tight angles and compact wiring area on the motor difficult to work with. This is more on me than the manufacturer, but it would be awesome if the conduit attachment point for the terminals was actually in line with them vs being offset by practically the entire hole diameter away from them. I'm only a few days in, but so far the new motor is running like a champ. I'll try and remember to update this review whenever it ultimately kicks the bucket; hopefully it's many years from now.

I made the mistake of ordering this item and bought a used one, Amazon listed it in mint like new condition / open box. The only reason I considered doing this was because Amazon said in their description that all items were tested and in perfect working order and this particular unit was in mint condition and open box. Total crap. I unpacked the unit and removed the pieces off of my locked up dead motor and transferred them to the new motor. I then had to do the wiring connections and then all of the attachment to the super pump. This takes quite a long time. Once everything was done and secure I turned the breakers on and this motor was so loud all it did was make the most god-awful humming / vibration sound. After just maybe two seconds the most horrible smell started coming from the motor and it never started pushing any water at all. I quickly turned it off. I disconnected the motor from the pump and checked all of the wiring which was fine and then reconnected it all back to the pump a second time and the unit would not even turn on. There is no way that Amazon tested this before putting it on their resale. The screws were missing for the wiring connections so I took the ones off my old motor and used it on this motor I found that odd how it didn't have the wiring screws attached and ready. The motor itself looked very nice and very sleek but clearly it did not work. I can't begin to tell you that I wasted an entire day dealing with this. I have swapped many motors out in my lifetime on my pools, and it's not a quick process. I will never buy anything used on Amazon again EVER. I needed this motor here quick and this listing came in just a couple of days. The new motors were going to take 5 days. I had to turn right around this evening and place another order for a NEW motor of the same kind and now I will wait 4 days for it. I should have made that decision in the first place. Shame on Amazon. Of course I have to drive the box to a UPS store to ship it back and of course Amazon's going to keep my money for at least 10 days before they refund it all on a product that they sold that doesn't work. I certainly expect to be compensated beyond my refund but I won't hold my breath it's Amazon after all. Very angry prime member.

Was a direct replacement. Installed easily and wiring was the exact same. No leaks and this one is quiet, once again

The motor seems well built and sounds good. This is the 3rd pump in 19 years after converting toa salt system so i guess I am doing well.

If you need a super pump buy this one. The best of course is Hayward but it's double the price. This is my second. My original was a Hayward but I tried this brand Century and it works perfectly and saved about $150. I tried a cheaper brand than Century, it was horrible, loud, noisy, and rusted within 2 weeks. Do not waste your time in other brands. If you have the $ get Hayward, if not get Century.

I purchase a cheaper 1 HP electric motor about a year and a half ago that motor quit. It was running hot and shutting off every few minutes. I purchased this Century 1HP motor and while changing the pump I noticed that the machining was cleaner and the electric connection much better. After installing I found the Century motor much quieter and smoother. I am very impressed.

The motor worked as expected

Perfect and easy to install

First motor wouldn't work when hooked up for 230 volts. Amazon replaced with a new one and now it works as expected. Perfect replacement for the hayward superpump motor. Only issue is the tight fit when it comes to hooking up the wires.