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Jointer cutterhead screw question
Posted: Fri May 07, 2010 1:30 pm
by hobbydad
Does anyone know the size of the screws that hold the wedges in the jointer cutterhead? I replaced the bearings and blades recently, and there is one screw that does not want to go in. I found a couple of dings in the screw's threads, so I went out to match it up and get a new one. I was really surprised that the screw I brought would only fit a 5mm nut... That would be the first metric screw that I found on the SS equipment.
Anyway, I bought a couple of them and tried to put the new screw in, but it doesn't want to go in any easier than the original screw. If it is cross threading, I don't want to wreck the cutterhead. Before I go out and buy a tap, I want to verify the screw size. I would appreciate any input.
TIA,
Loren
Posted: Fri May 07, 2010 1:53 pm
by dusty
hobbydad wrote:Does anyone know the size of the screws that hold the wedges in the jointer cutterhead? I replaced the bearings and blades recently, and there is one screw that does not want to go in. I found a couple of dings in the screw's threads, so I went out to match it up and get a new one. I was really surprised that the screw I brought would only fit a 5mm nut... That would be the first metric screw that I found on the SS equipment.
Anyway, I bought a couple of them and tried to put the new screw in, but it doesn't want to go in any easier than the original screw. If it is cross threading, I don't want to wreck the cutterhead. Before I go out and buy a tap, I want to verify the screw size. I would appreciate any input.
TIA,
Loren
If you do not find a screw locally that fits, let me know. PM me your mailing address and I'll send you a screw. I bent the shaft on a cutter head trying to do a bearing replacement without the correct tools. About the only thing I salvaged was the wedges and screws. Oh ya. I saved a set of blades too -that have not yet been sharpened.
I just finished running one of the screws through a die and I believe the screw is a 10-32NF and it is 1" long. I did not use any tools other than my fingers and the screw was difficult to screw into the die but I did it without any evidence of cutting threads.
Finding same with a hex head may be the problem unless you have a good hardware store or access to a machine shop.
Posted: Fri May 07, 2010 2:37 pm
by hobbydad
Thank you, Dusty. I appreciate you taking the time to check it out. I will go back and get a 10-32 screw to try, and if that doesn't work, I will try cleaning it out with a tap. I will post back when I have it figured out.
Loren
Posted: Fri May 07, 2010 2:57 pm
by JPG
hobbydad wrote:Thank you, Dusty. I appreciate you taking the time to check it out. I will go back and get a 10-32 screw to try, and if that doesn't work, I will try cleaning it out with a tap. I will post back when I have it figured out.
Loren
If yer gonna look for a screw, it needs to be 3/4" long. The length is measured from the bottom of the head.
Thus look for: a "10-32 x 3/4 hex socket cap screw". Overall length will be about 1".
Didja like that MickyD? - Did I leave something out?
Posted: Fri May 07, 2010 3:08 pm
by dusty
JPG40504 wrote:If yer gonna look for a screw, it needs to be 3/4" long. The length is measured from the bottom of the head.
Thus look for: a "10-32 x 3/4 hex socket cap screw". Overall length will be about 1".
Didja like that MickyD? - Did I leave something out?
The screws that came from my defunct cutter head are 1" long thread plus the hex head.
Posted: Fri May 07, 2010 4:02 pm
by JPG
dusty wrote:The screws that came from my defunct cutter head are 1" long thread plus the hex head.
Please come to my 'rescue' Mike!!!!
Posted: Fri May 07, 2010 4:04 pm
by heathicus
JPG40504 wrote:Please come to my 'rescue' Mike!!!!
I think Dusty is saying that his is longer than yours.
Posted: Fri May 07, 2010 4:27 pm
by dusty
JPG40504 wrote:Please come to my 'rescue' Mike!!!!
It feels as though there might be some doubt.
[ATTACH]8796[/ATTACH]
Posted: Fri May 07, 2010 4:29 pm
by dusty
heathicus wrote:I think Dusty is saying that his is longer than yours.
Yup. At least a 1/4". Every little bit counts.
Posted: Fri May 07, 2010 4:33 pm
by dusty
hobbydad wrote:Thank you, Dusty. I appreciate you taking the time to check it out. I will go back and get a 10-32 screw to try, and if that doesn't work, I will try cleaning it out with a tap. I will post back when I have it figured out.
Loren
Be careful with that tap. If you can do this with finger strength it would be safer.
You really do not want to screw up those threads. A cutterhead is very expensive - especially when you need to buy one because of a mistake.