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Old jointer

7K views 12 replies 5 participants last post by  ej48 
#1 · (Edited)
I have an old jointer I would like to start using. I think it's a craftsman. It has a 1/2 HP motor. The pulley on the motor is 2.5". The one on the jointer is 2". I think I need to increase the rpm's. So what kind of speed should I be looking for and what size pulley do I need to put on the motor.the blades are about 4.5 inches.
Thank you
 

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#5 ·
This looks like a great little joiner.
My first thought is to use the joiner as-is.
Without knowing the RPM of the motor ( most likely either 1750 or 3450 rpm), it's premature to recommend a pulley change.
I would stay with the original ratios if you can find what they are.
I'm betting the pulley ratios are original.
This little machine was made to make a maximum cutting depth of no more than 1/8" per pass.
 
#9 ·
I used one similar to that up until I got my big 6 inch jointer. Mine had a 1/2 hp 1725 rpm motor, with around a 5 or 6 inch motor pulley and a 2 inch head pulley. If memory serves correctly the recommended speed for the cutterhead is in the 4-5000 rpm range, so a 5 inch motor pulley should do you well.

As far as power goes, the 1/2 on yours should be plenty, so long as you keep the knive sharp and don't try making super-deep cuts
 
#13 ·
I installed the 5" pulley. It does 4" wide boards without a problem. The shaving a half the size they were before and it sounds smoother. I just have to get the right size belt and secure the motor better. Need to make an adjuster for the belt tension.
Thank you
 
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