7x12 Horizontal Bandsaw Gear Box Repair, Part 1

2 years ago
17

This saw is around 17 years old and gets used daily for cutting metal and plastic stock to make parts for the business. The saw has been getting noisier over the last few years and the last month, that noise became unbearable.

Harbor Freight had no parts available for this model saw that was discontinued so 10-15 years ago. Their new model saw is nearly identical, having a few new guards, safety features and paint scheme. However, they have no cross references for parts.

Harbor Freight saw:
https://www.harborfreight.com/1-hp-7-inch-x-12-inch-hydraulic-feed-metal-cutting-bandsaw-34272.html

Luckily Grizzly has an identical saw and their updated parts ordering page is excellent.
Grizzly Saw:
https://www.grizzly.com/products/grizzly-7-x-12-1-hp-metal-cutting-bandsaw/g0561
Parts:
https://www.grizzly.com/products/g0561/parts
You can look up the bearing p/n on their site or simply measure the ID, OD and thickness.

Replacement bearings (FAG brand) from McMaster-Carr, less expensive than Grizzly:
https://www.mcmaster.com/bearings/system-of-measurement~metric/for-shaft-diameter~17mm/for-housing-id~35mm/bearing-trade-number~6003-2z/width~10-mm/

Or Amazon for 1/4 the price:
https://amzn.to/3tBzoL4

Cliff's Shed has a good video on gear box repair that I used for reference:
https://youtu.be/6x275cVbhLI
Cliff went so far as to fabricate a new worm/worm gear combo!

Nice thing with this repair is, aside from purchasing the replacement bearings, it was accomplished with tools already on hand.

More to come...
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Intro/Outro:
Louisiana Fairytale by Austin Rogers
https://web.archive.org/web/20170402222425/http://drfiddle.com/show_tune.php?id=94

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