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ERICKSON TENTHSET Boring Head tear down?
- Thread starter rodm1
- Start date
- Joined
- May 4, 2019
- Messages
- 792
I did it years ago, but I don't remember the details. It was not a difficult job.
This will help
Kennametal tenthset boring head, disassembley and cleaning help
Hi folks, I recently purchased at auction a lot of Kennametal tenthset heads, four of the larger #50's and one of the smaller #37's. These are the type with the collar on the outside that rotates around the head to set size, not the screw dial type like a Bridgeport boring head. The type of...
www.practicalmachinist.com
- Joined
- Mar 9, 2018
- Messages
- 465
I pulled apart one of the #50 versions a few years ago. Disassembly was easy, to the best of my recollection.
The mechanism inside is pretty simple: basically just relies on some fine threads and a big ramp.
BE AWARE: on re-assembly it's really, really easy to cross-thread / misalign the internal threaded 'bar' thing. So make double-sure you've got it right before washing your hands, then double check it again once everything is together to make sure things operate smoothly. If it's not smooth, it's probably cross-threaded.
EDIT: Unlike a bolt that gets stuck one or two threads in when it's cross-threaded, the little cross bar thing will not jam up if you're off by a thread, so it won't be immediately obvious if it's in there wrong. You'll know it's wrong based on how the collar feels when operating it.
The mechanism inside is pretty simple: basically just relies on some fine threads and a big ramp.
BE AWARE: on re-assembly it's really, really easy to cross-thread / misalign the internal threaded 'bar' thing. So make double-sure you've got it right before washing your hands, then double check it again once everything is together to make sure things operate smoothly. If it's not smooth, it's probably cross-threaded.
EDIT: Unlike a bolt that gets stuck one or two threads in when it's cross-threaded, the little cross bar thing will not jam up if you're off by a thread, so it won't be immediately obvious if it's in there wrong. You'll know it's wrong based on how the collar feels when operating it.