circular saw gear grease

[snakejeep]

I've got a vintage 70's-80's Black & Decker super saw cat circular
saw and would like to change the gear case grease.The grease it
calls for is part# 790206-00,but the stuff is $35 for 6 oz.Ouch! Would
automotive disc wheel bearing grease be just as good.I've got some
red penzoil disc wheel bearing grease.Thanks for any response

 

[bungy42]

I just cleaned up my old circular saw and used regular ol' wheel bearing grease. I doubt it matters much.

 

[jjjrmx5]

Considering Non-geared electric motor cirulars typically run at 1,725 RPM to 3,450 RPM and Worm drive handheld circular saws typically run between 4,000 and 5,000 RPM, I'd say that's a wee bit higher than what your wheels run on your vehicle. Or at least mine. LOL.
That's car engine territory. Not wheel bearings.

Might want to research a little more into grease weight/gear oil and type before you fry a good tool.

No different than trying to use 75W-90 diff fluid in your engine. Sure, it may run for a while, but for HOW long.

Here's the MSD sheet on what you listed # 790206-00
http://www.setonresourcecenter.com/msdshazcom/htdocs/MSDS/E/exxon/wcd00336.htm

Imma gonna guess there IS a cheaper replacement than $36. Just gotta hunt.

 

[Steevo]

What is in the "gear case"?
Is this a hypoid saw the Skilsaws with the right-angle drive?
If so, you want the correct lube in there for sure. I have a pint can in the box with my Milwaukee gear drive saw, that I have had for as long as the saw (28 years?)

 

[WWIIjeep]

Is this a hypoid saw the Skilsaws with the right-angle drive?

The B&D "Sawcat" and "Super Sawcat" are conventional circular saws, not worm drive.

Even so, he should have the right kind of grease in it. Greases for power tool gearboxes generally have more "tack" and more resistance to centrifugal separation (wring-out) than wheel bearing greases so that the grease stays in contact with the gears instead of being flung to the outer edges of the gear case away from the gears.