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Old 07-04-2022, 05:46 PM
staybusy staybusy is offline
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Default 4x6 Horizontal Bandsaw Is Locking At Worm Gear

This used bandsaw I bought did NOT enjoy cutting 1" x 10" steel plate, now something is wrong.

When the blade makes connection it jams up, I traced the issue back to the worm gear, the gear itself and the shaft aren't remaining attached to the pulley once load is applied and are locking up or have broken free or something.

Any ideas on the best way to fix it?

Video showing the problem https://www.youtube.com/shorts/bzsJniblUVQ
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  #2  
Old 07-04-2022, 06:07 PM
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Ironman Ironman is offline
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You have probably lost the key in the pulley shaft or the key has sheared off. Pull off the worm gear pulley to inspect it.
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Old 07-04-2022, 10:40 PM
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Shade Tree Welder Shade Tree Welder is offline
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Quote:
Originally Posted by Ironman View Post
You have probably lost the key in the pulley shaft or the key has sheared off. Pull off the worm gear pulley to inspect it.
Yeah, that would be my guess, the key on the shaft with the pulley has
sheared or if set screws are used they have sheared or backed out,
disassemble, evaluate and fix it. Use Blue Loctite on set screws. 242 or 243.
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Old 07-05-2022, 04:16 PM
staybusy staybusy is offline
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Yep, was quite an easy fix after all. The screw in the pulley wasn't tight anymore.

Huge relief for me to not have to start extracting and replacing gears or shafts. I noticed the lower worm gear tooth was kind of busted up but nothing too crazy.

I didn't have any 140 gear oil so I put in some transmission oil in the gearbox. What do you guys think..? can I just leave it or should I blow $40 ordering the exact oil they recommend?
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Old 07-05-2022, 06:28 PM
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Shade Tree Welder Shade Tree Welder is offline
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Originally Posted by staybusy View Post
... can I just leave it or should I blow $40 ordering the exact oil they recommend?
regular gear oil will eat the bronze worm gear. Get the right shit, cheaper than replace the gear.
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  #6  
Old 07-05-2022, 08:28 PM
staybusy staybusy is offline
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Quote:
Originally Posted by Shade Tree Welder View Post
regular gear oil will eat the bronze worm gear. Get the right shit, cheaper than replace the gear.
Ok I'll get some proper gear oil. What you think of this? https://www.canadiantire.ca/en/pdp/r...-0289087p.html

Last edited by staybusy; 07-05-2022 at 08:48 PM.
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  #7  
Old 07-06-2022, 03:17 PM
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greywynd greywynd is offline
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What part of Ontario?

Call some mobile industrial mechanics/millwright services. Some of them may be able to sell you a small amount from a drum or bulk tank.

You could ask the distributors if there’s any large volume buyers that may resell to you as well.


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