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Forum topic by Kelly posted 08-13-2015 12:16 AM 1124 views 0 times favorited 1 reply Add to Favorites Watch
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2039 posts in 2967 days

08-13-2015 12:16 AM

Topic tags/keywords: pm 50 pm50 powermatic jointer planer restoration jointers motor grizzly 6 jointer 8 jointer six inch jointer eight inch jointer

I have a Powermatic six inch jointer (PM 50) sitting in my shop. It needs knives and gibs and such for the head, as well as a motor, pulleys and a belt.

Even if I went for the Helix head, I figure I could get it flying for $550.00. An alternative is, for one thousand, including tax and delivery, an 8” Grizzly G0490with standard knives.

The parts folks on line reference a gib assembly, but I don’t know what all it includes, or if I need one for each knife. At around $67.00, if one for each knife, and adding the cost of knives, especially if I went for carbide, it’d be time to look in the direction of a Helix head. Anyone know if the assembly is for the entire head or one blade? Here’s the site:

So far, information indicates I should limit the motor to a [good] 3/4 horse running at 3450. However, when I call the motor people, they want to know which kind. For example, does it call for a 56 frame, or a 145 frame, or . . . Anyone out there know which one is the winner?

I’d appreciate information, and look forward to suggestions.


1 reply so far

View Nubsnstubs's profile


1296 posts in 1753 days

#1 posted 08-15-2015 04:23 AM

Kelly, I went to the link you posted, and the knives are $79.85 for three. Unfortunately, the gibs are obsolete. Pretty much any motor would work. If you know any machinist, your quest will be easy. They look to be 1/4” thick, about 1/2” wide with a cove on the top edge and I believe there are 3 holes in each for the screws. I’ll look tomorrow to find out what the HP and frame is and give you an educated description of the gibs.

In your pm to me asked about my pulleys. They are stock Powermatic pulleys installed by Powermatic at McMinville?sp, Tennessee back about ‘85. the jointer has suffered a lot of abuse because I believe machines should be used rather than looked at or bragged about, so all my equipment gets used to the max. I has yet to fail, even after jointing over 35-40,000 bdft of hardwoods, plus all kinds of other things I used it for..

Lately, I’m abusing it by jointing flat spots on desert woods with bark, sand, rocks, and all kinds of other no no’s in it for turning blanks. It hasn’t let me down yet. ............. Jerry (in Tucson)

-- Jerry (in Tucson)

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