Yes make sure you adjust the depth and run the router counter clockwise
I don't know if replacement bearings are available but you can take a bearing off another bit and use it.
I wouldn't try since there is a lot of particles when the bit hit a board.
I used it to cut a 12 foot long, 1/2" wide path through T1-11 outdoor siding plywood 5/8" thick. I was trimming siding back to new studs for an enlarged opening in a storage shed. I should have used a circular saw, but I know I would have butchered the studs, so went this route, and it worked perfectly.
Hi Tony, Thank you for your question. This bit will cut Plexiglas, however you will want to be aware of the feed rate and speed of the bit so you don't melt the material. Best to make a practice cut on a sample piece first. Hope this helps.
I haven't measured it as I do not own a micrometer for exact details. but with 1/2" shank and being carbide tipped I would just replace it down the road after it goes bad if ever. I have never had a bearing freeze up on a router bit.
This is a wood routing bit - I would not recommend using this on any metal.
Mine lasted for 3 feet of 3/4 plywood before the bearing failed.
If it has enough power