hammerscale

Amateur Machinists' Tools, Techniques and Materials

Archive for the ‘Uncategorized’ Category

Bearing cheat sheet

Posted by hammerscale on April 28, 2016

A quick helping guide, courtesy of SKF bearings.

 

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The Three Amigos

Posted by hammerscale on March 10, 2016

For about 80 percent of all modern motors, machine tools, lawn equipment, etc., etc. The Three Amigos of Bearings will ride to the rescue, repairing sticky, gritty or seized shafts.

A small selection of ABEC 6203, 6204 and 6205 bearings in your tool box will never go un-used.  For virtually all applications you’ll want rubber seals, both sides, “2RS” designation.

 

Amigos

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VersaTapper Rebuild

Posted by hammerscale on February 23, 2016

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Finding info on this or any other brand tapping head is getting hard to come by, as these pieces of tooling are becoming obsolete in our new CNC world order.

I did a clean and re-assemble on my Rigid Versatapper, (1 pair clutch plates shown below), but got stymied by what kind of lubricant to use inside the tapping head. The best reference I could find was for a highly viscous oil, trade name/number which was NLA (no longer available.)

 

 

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I figured the oil weight was mostly an issue of preventing weeping of the product over time, and substituted automatic transmission fluid (Dexron was what I had in stock), filling the inside of the head to the fill line.

The tapping head has been in use for quite some time and performed fine with this substitution.

 

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File this one under safety not-so-safe

Posted by hammerscale on January 6, 2016

safe

 

It’s bad enough having a chuck key get flung across the room, but now add some sound and fury to the equation.

At least use dental floss or some other breakaway type of line when doing the above.

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Torque V Tension.

Posted by hammerscale on March 17, 2013

Who wins in Torque versus Tension? It appears torque specs for fasteners are irrelevant unless condition of fasteners is a constant and meets standards. Also, many torquing instructions advise against adding lubricant or anti-sieze to the fastener, contrary to what is demonstrated in the video. I’ll confess I’m lost, should I throw away my torque wrench? What can you do? (I always just do it by feel.)

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