Reply by CaptainKlutz

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Posted on Used Laguna 20" Planer Question

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1892 posts in 2004 days

#1 posted 07-03-2019 06:08 PM

Buy it quick!

Have rebuilt a couple of common 15” planers, and one antique 18”. The 15” designs are near identical to the Laguna images I find for the model PN posted (just like most planers).
Bearings are standard metric 6000 series, and easy to find. On 15” model, the cutter head bearings cost me less $20 for a pair of high quality Japanese motor bearing. Less if you want to use cheap chinese bearings, which is probably the reason it needs new ones?
Can replace all 23 bearings on 15” planer rebuild for ~$150. Every rebuild needs a couple other small parts, but as long in-feed and out-feed rollers don’t need replacing, I spent less than $200 to total bearing replacement and rebuild. Any 20” machine for $450 will sell for $1000+ when rebuilt, so hard to lose money even if you have to spend $180 on new rubber out-feed roller?

The only challenge to planer rebuild is weight. To replace bearings you pull the head and gear box. The 15” planers have 3” OD solid steel cutter head, and cast iron box full of gears is all heavy. One person can handle 15”, but a longer head you will want some hep wrestling a 80+ lb assembly out from side of machine.

Changing the cutter head bearing means opening up the gear box, so you will probably need to call Laguna for replacement gasket. They will have expensive bearings too.

If you want to see what’s involved on smaller generic 15”, one of the wood working magazines has several part series on changing 15” planer to shellix cutter head. They show entire tear down and re-assembly. Don’t have time to search it out for you right now.

Best Luck.

-- I'm an engineer not a woodworker, but I can randomly find useful tools and furniture inside a pile of lumber!

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