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#1
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Hello all, I acquired a small table-top lathe from the machinist at the University and I've been having quite a bit of trouble locating a source for a replacement belt. Here's a shot of the front panel: ![]() There's a 'Made in Taiwan' sticker on the top but the panel is in German. The machinist told me he's got a manual somewhere, but until then I figured this was as good a source as any for information.. It's practically brand new (never been used heavily, if at all). The chuck is missing one of the inside jaws (anybody know if all 4" scroll chucks are the same for replacement jaws?): ![]() The original belt was still in place when I opened it but broke on first run.. it was old and very brittle (the drive motor has a manufacture date of ~1985 on it): ![]() I've tried everything I can think of to replace the belt.. The original has a top-width of 0.175" (around 4.5 mm) and a height of 0.130" (about 3.28 mm). Outer circle measures 27" (685 mm). I've tried both hollow and solid core belting from McMaster Carr as well as cutting a 2L270 series belt in half lengthwise (I wasn't careful enough for this one.. so no success.) In most cases, the tensioner is too strong and either stretches the belt (in the case of the hollow and solid core belting) or just breaks. Either I'm not looking in the right place, or this belt just doesn't exist. The closest think I've found is a custom belt made by WM Berg. Lead time of 6 weeks at a cost of around $20 each. I'd rather use this as a last resort. I also considered cutting new stepped pulleys to replace the originals so that a standard 2L series belt could be used. It's a bit of design work, but I'd rather re-make the pulleys than have to go through this much work to find a new belt again.. Other than the belt and a few odds and ends of saddle parts, it's in pretty good shape. Only other thing it needs is a new set of change gears (the originals were never found) Thanks in advance for any help! |
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#3
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| Look through the Misumi catalogue, they carry a stock of metric timing belts. Also stock drive products sdp-si.com carry a good selection. Al.
__________________ “Logic will get you from A to B. Imagination will take you everywhere.” Albert E. (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |
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#4
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| The lathe looks like one of the early predecessors of the 9x20 lathes. They were copied from the Emco (not Enco) 8" lathe which were pure gear change lathes with no partial quick change box. You might look up the Emco 8" and see what belt it used. Also you might check the manual on a Grizzly G4000. The Grizzly uses an M5x730 belt. (By the way I believe that the belt is urethane.) Alan
__________________ http://www.alansmachineworks.com Last edited by acondit; 10-21-2008 at 11:34 PM. Reason: Added info |
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