Miter Gears

Could you use spider gears out of an old differential? Randy

Both Browning and Boston Gear sell such critters here in the States. I can't imagine you couldn't find them in Canada as well. They tend to come with stock bores and are not heat treated so they can be modified to your particular requirements, or used as they come. You could probably select a gear of the right diameter and bore size with a little luck. Here's a link to one supplier:

If you don't find what you're looking for here, do a search for "miter gears" on where you'll find a large number of suppliers that sell online.

Harold

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Harold

"distracted" wrote: I am having trouble finding an econmical source for suitable miter gears. (clip) ^^^^^^^^^^^^^^ Old car jacks?

Boston Gear makes nylon bevel gears in a limited range of sizes. For example, a GP1632Y is a 16DP, 32T gear with 1-

1/4 dia hub. Motion Industries shows them in stock at around $6US each.

Someone else mentioned car jacks as a source, and trailer tongue jacks are another. You may also be able to use the nut and screw, or the whole jack.

Don't forget that a two-screw lift isn't very stable. If your load is small or is always centered you're probably OK. A more stable arrangement for eccentric loads (other than 3 screws in a triangle) would be a scissors lift (see Southworth lift tables) or a parallelogram arrangement. Each has advantages and drawbacks.

Ned Simmons

Is it possible you may be able to use a worm and worm wheel? You could make those on your lathe probably quicker than you can find the proper miter gears you're looking for. Ken

I used to work where the main computer console table was as you describe, except they used a link chain and a removable handle. The chain wrapped around sprockets on 4 jack screws within the table top and raised and lowered the top about 18". It was a fairly substantial table, the computer monitors were pretty heavy as was the card reader and other gear. The rear jack screws had square ends recessed on top, the crank fit either one. It was set up with such substantial movement so the operators could either work standing or in an office chair. Management didn't allow lounging around so they were run to the top and the crank handles kept elsewhere.

Stan

Go to a local RV supply store and ask for a cataogue on trailer jacks. They all come with bevel gears and worm drives exactly like you described. Bugs

Thanks to all who posted ideas to my request for info on sourcing miter gears. Thanks! Eric

Two ideas: Volvo screw jacks are quite nice.

My Craftsman tabletop 12" planer has bevel gears and two vertical screws.

Ken Grunke

That's an extraordinarily generous offer, Ken.

R, Tom Q. Remove bogusinfo to reply.

Indeed. When I bought my wife a 84 Volvo some years ago, it was missing the jack. I believe I paid $5 for two of them at the local wrecking yard. One remains in her car, and the other, slightly modified, works in conjuction with my Simplex jack for lifting purposes.

Gunner

something

has them for $25 each on there online catalog