leeko
Stainless
- Joined
- Jun 30, 2012
- Location
- Chicago, USA
Hi all,
I'm starting a cleanup of an older Doall cylindrical grinding and indexing attachment, and cracked it open last night. It's a bit rusty, the worst being on the bottom of the sine table but I don't see any pitting at least.
Inside, there's a 3 step pulley system to give some speed change capability. The pulleys look like miniature v-belt pulleys (smaller than an "A" belt size), but the belt that's on there looks incorrect. It's basically a flat rubber belt, with one side longer than the other, kinda like a Nascar track. It works, but I don't think it's correct.
- can anyone advise what the correct type of replacement belt should be?
- can anyone tell me what the heck this type of belt is?
- also, what's the purpose of the tension arm above the belt? It appears to generate enough torque to drive the spindle without it, so why is it needed?
If anyone has a lead for a manual for this, I'd love to grab one.
Thanks very much!
Lee
Sent from my SM-N960U using Tapatalk
I'm starting a cleanup of an older Doall cylindrical grinding and indexing attachment, and cracked it open last night. It's a bit rusty, the worst being on the bottom of the sine table but I don't see any pitting at least.
Inside, there's a 3 step pulley system to give some speed change capability. The pulleys look like miniature v-belt pulleys (smaller than an "A" belt size), but the belt that's on there looks incorrect. It's basically a flat rubber belt, with one side longer than the other, kinda like a Nascar track. It works, but I don't think it's correct.
- can anyone advise what the correct type of replacement belt should be?
- can anyone tell me what the heck this type of belt is?
- also, what's the purpose of the tension arm above the belt? It appears to generate enough torque to drive the spindle without it, so why is it needed?
If anyone has a lead for a manual for this, I'd love to grab one.
Thanks very much!
Lee
Sent from my SM-N960U using Tapatalk