Electric motor help
Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=191541
Printed Date: 25 Aug 2025 at 3:35am
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Topic: Electric motor help
Posted By: Mikez
Subject: Electric motor help
Date Posted: 29 Oct 2022 at 1:57pm
Hello everyone. Anyone recognize this motor. I’d like to just buy the motor by itself. Bout the size of beer can. As a unit the old number is a Thomson 7820241. Just like everything else. Went from $250 to $750 and not in stock. There’s a motor in each circled box and one on seat to extend it.  |
Replies:
Posted By: steve(ill)
Date Posted: 29 Oct 2022 at 3:54pm
can you read the sticker and verify 12v and speed needed.... the bolt spacing to mount to gear box .... and shaft drive slot ? ------------- Like them all, but love the "B"s. |
Posted By: DaveKamp
Date Posted: 29 Oct 2022 at 9:47pm
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At those prices (for the motor, or gearbox) I'd just go on a hunt for some other arrangement of linear actuator... something that's cheaper AND more robust... What're you using it on?? ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: Mikez
Date Posted: 30 Oct 2022 at 12:20am
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Well you know as I was writing that I thought that I didn’t have the info on hand that someone will ask. It is 12v. I’ll see if I can get you some info off motor. These motors go in a lift that is on my truck and thats how I get in and out of tractors
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Posted By: Mikez
Date Posted: 30 Oct 2022 at 5:31pm
| I put a picture up in the first post. I don’t see any info on sticker regarding the motor itself. Next |
Posted By: steve(ill)
Date Posted: 30 Oct 2022 at 5:40pm
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Mike , i did a GOOGLE search with your numbers and it gave a few "look here" at motors. Some were 12, 24, 48 and 90 volt .... I clicked on a couple of the 12 v motors to get an idea.. I think your going to have to get some additional data .. The motor i show above turns 3000 rpm at 12 volts... Dont know if that is acceptable or not.. The end of the shaft looks like it has a GROOVE to fit over a coupling drive. Some have a gear on them.... Then you have to know about the two mounting bolts, spacing between them... I dont think this is going to be a slam dunk.. I think your going to have to pull one of the motors off and do some checking.. ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 30 Oct 2022 at 5:47pm
PG12 means 12 volt... 58 means 58 :1 gear reduction...... you might call these guys and say " how much for just a motor" and see what kind of response you get ?? ------------- Like them all, but love the "B"s. |
Posted By: Mikez
Date Posted: 30 Oct 2022 at 5:59pm
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Yes it’s a 58:1 gear ratio. The first time one crapped out I looked around locally and nobody could come up with anything. So iv been just getting them through the company that built lift. But this spring I used the spare I keep on hand and they said they didn’t have any in stock. I took that bad motor to the guy that does our starters and alternators. See what he says. Thanks Steve
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Posted By: Mikez
Date Posted: 14 Dec 2022 at 6:22pm
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Posted By: Mikez
Date Posted: 14 Dec 2022 at 6:30pm
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I found an old motor in scrap pile. The mounting holes are like 2” apart. The shop that does our starters an alternators said can’t rebuild it. I found a dealer near us and ordered one. $4hundred something with 200 day wait
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Posted By: DiyDave
Date Posted: 14 Dec 2022 at 7:46pm
Surplus center might have something similar, You might get lucky... https://www.surpluscenter.com/Electric-Motors/" rel="nofollow - https://www.surpluscenter.com/Electric-Motors/ ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |
Posted By: Dirt Farmer
Date Posted: 15 Dec 2022 at 1:35am
| Just a passing thought, at first glance could that be the same motor that gleaner uses on their ladder to raise and lower it on a R series combine or on an 8000 series header for fore and aft on the reel. |
Posted By: DaveKamp
Date Posted: 15 Dec 2022 at 7:17am
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motors of that size usually show up on electric trailer jacks, extender actuators for RV slide-outs, etc. They're small and powerful, but they generally don't exhibit a really long service life... because people use them for RVs, which are 'luxury' items... which means they can 'afford to replace them fairly often'. If they're failing often in your lift, another way to approach it, is to find a more robust motor, and adapt it to the lift... I can see the end of one in the photo, but I don't see how the rest couple up to the mechanisms. How are the drives set up? I see the lower hydraulic cylinder, which means any hydraulic source SHOULD work, and I see one down on the chair boom, looks like it might be on a gearmotor to swing the boom... if there's a worm gear in there, pulling that motor out, fitting in a shaft, and any other type of motor drive would be possible... my GUESS is that the slewing of the main boom would be identical worm drive arrangement ? ?
------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |