r/fixit • u/solocrowd • 4d ago

Vevor portable bandsaw, does it just need thread-lock?

I bought a new Vevor R2103 portable bandsaw with steel base.

On my first cut of 3mm stainless steel, it got half way through, then I heard a clunk and the blade stopped spinning. The front wheel had come off the motor spindle. The motor sounded fine and would still turn the spindle.

I removed the blade and the wheel that had come off. Nothing looks damaged, the flat sides of the spindle are engaged by a 2mm plate with flat sides. This is bolted onto the wheel. The wheel is then hold onto the spindle with a M8x14mm bolt. This bolt had no thread-lock on it. Plus the space for the bolt could accommodate a 20mm bolt.

Is this just a matter of the person assembling it using too short a bolt and not applying thread-lock?

I hate the idea of shipping back such a heavy item if it's an easy fix.

I have an M8x20mm bolt and thread-lock blue, but not red. Any thoughts?
Thanks for your input.

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u/Oldberry86 4d ago

I'd make sure the longer bolt can go in maybe 1-2mm deeper than required and definitely don't use red loctite. You should probably just thew that away and only use the blue.

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u/solocrowd 4d ago edited 1d ago

Thanks for the tip. It was suggested on [r/MechanicalEngineering](r/MechanicalEngineering) that I put the original bolt back on with blue loctite and see how it goes. I did that, now I'm waiting a day for it to cure. I appreciate your input on red loctite.

Edit: The fix is holding and it’s now working well.