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Old 06-07-2019, 04:08 PM   #1
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Help with old Craftsman drill press

I know this is skoolie.net and not drillpress.net, but you're my only hope, Obi-Wan. I'm trying to get my brother's Craftsman 15" 1 HP 12-speed drill press working again (model 113 213150). I found a universal key for its 5/8" chuck that works, but now I'm trying to find replacement spindle belts for it (there are three spindles so I need two belts) and Sears does not carry replacements for them any more. The two belts that are on there now are themselves off-brand replacements and I don't think they're exactly the right ones because they're too tight to get off and the engine is right up against the casing (so no way to reduce tension any further).

The drill does run with these two belts on, but the drill press is currently set to the lowest possible RPM (I need higher) and I can't even get the current belts on to different rungs at all.

I found the manual for this drill online, and it says the front belt is Belt-"V" 3/8 x 26 and the back belt is Belt-"V" 3/8 x 24. I assume this is an enormous clue but I can't seem to find any belts exactly like that.

Edit: would this work for a drill press? https://www.amazon.com/PowerDrive-3L.../dp/B00EIRBSMA
https://www.amazon.com/PowerDrive-3V.../dp/B00EIREFCA
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Old 06-07-2019, 04:19 PM   #2
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This is not the droid you are looking for.
Am I correct in guessing you need a belt that's trapezoidal in its cross-section? The narrow face fitting into the V pulleys..?
Auto parts or farm & garden stores would be where I'd start looking for a belt of the correct dimensions.
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Old 06-07-2019, 04:25 PM   #3
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Interesting: I took another look at the replacement belts already on there. They are Gemini M-24 and Gemini M-26 except they're on the wrong spindles; the 24" belt is in front and the 26" belt is in back and they should be the other way around. Would it be bad for a drill press to have the belts on wrong that way? I wonder if somebody in the past had to move the center spindle in order to accommodate getting the belts on wrong.

I guess I'm going to have to remove one of the spindles in order to get these belts off and switch them. Anybody ever done that with a drill press?
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Old 06-07-2019, 04:37 PM   #4
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The too-loose-lautrek belt ought be OK. The too-tight one may've damaged the bearings by trying to pull the shaft too severely.
Once you get the replacement belts, why not cut the old ones off- would that provide the necessary adjustment play to then install the new ones?
Does your manual instruct you as to how much deflection the belt should have?
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Old 06-07-2019, 04:44 PM   #5
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Originally Posted by haz.matt.1960 View Post
The too-loose-lautrek belt ought be OK. The too-tight one may've damaged the bearings by trying to pull the shaft too severely.
Once you get the replacement belts, why not cut the old ones off- would that provide the necessary adjustment play to then install the new ones?
Does your manual instruct you as to how much deflection the belt should have?
It says a half-inch deflection at the center. I think cutting the old ones off would free everything up, so I think I'm going to do that (assuming the belts I linked on Amazon are the correct ones which I'm not sure of). Even Gemini belts are considered "heritage" parts now, so I think it's time for these guys to go.
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Old 06-07-2019, 04:51 PM   #6
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Extremely common belts. These were as easy as typing in "3/8 x 24 V belt" on eBay or google. Every auto parts store is going to stock those belts.

https://www.ebay.com/itm/3-8-x-24-V-...frcectupt=true

https://www.ebay.com/itm/GATES-6726-...frcectupt=true
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Old 06-07-2019, 04:52 PM   #7
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Originally Posted by musigenesis View Post
Interesting: I took another look at the replacement belts already on there. They are Gemini M-24 and Gemini M-26 except they're on the wrong spindles; the 24" belt is in front and the 26" belt is in back and they should be the other way around. Would it be bad for a drill press to have the belts on wrong that way? I wonder if somebody in the past had to move the center spindle in order to accommodate getting the belts on wrong.

I guess I'm going to have to remove one of the spindles in order to get these belts off and switch them. Anybody ever done that with a drill press?
Belt/pulley orientation only adjusts speed.
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Old 06-07-2019, 05:05 PM   #8
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Quote:
Originally Posted by musigenesis View Post
It says a half-inch deflection at the center. I think cutting the old ones off would free everything up, so I think I'm going to do that (assuming the belts I linked on Amazon are the correct ones which I'm not sure of). Even Gemini belts are considered "heritage" parts now, so I think it's time for these guys to go.


you might check for `fractional horsepower belts

https://www.gates.com/us/en/power-tr...rsepower/c/112
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Old 06-07-2019, 06:03 PM   #9
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1/2" sounds about right for that app and belt length.
Are those now legacy belts? I figured you could find them at any well provisioned store locally. Me, I'd want the new belts in hand, before performing surgery on the old ones, just to eyeball the fit.
The too-tight one: Sounds vaguely obscene, but check for lateral play in the shaft. A tiny bit is probably OK, given it's age, but if significant wobble after the tension is released might require it get new bearings.
Hope not- if the belts were a bear to find, the replacement bearings'll be like looking for the Ark of the Covenant!

Quote:
Originally Posted by musigenesis View Post
It says a half-inch deflection at the center. I think cutting the old ones off would free everything up, so I think I'm going to do that (assuming the belts I linked on Amazon are the correct ones which I'm not sure of). Even Gemini belts are considered "heritage" parts now, so I think it's time for these guys to go.
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Old 06-07-2019, 06:16 PM   #10
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Belt/pulley orientation only adjusts speed.
No, I meant the 26" belt is supposed to run between the idler (center) pulley and the spindle pulley (front, above the chuck), while the 24" belt is supposed to run between the motor (rear) pulley and the idler pulley. I know that moving the belts up and down the pulleys is what changes the speed, but that's not what I'm talking about.
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