I'm in the process of adapting a Deckel S1 spindle to another T&C grinder and examining the parts list, I stumbled across this view of the cartridge :
What catched my eye is the belleville washers at the rear end.
In my limited experience with that type of cartridge, springs are usually used to preload the spindle bearings and take care of thermal expansion.
Here, the washers obviously tend to spread the cones the opposite way, in the direction that would loosen the bearings.
Since the spindle sat on a shelf for years (may be decades) before I got it, I thought about taking it apart to regrease it, but that arrangement is totally new to me.
The nut at the rear end is as simplistic as can be, without any locking system of any sort.
Can't figure out how one can be sure it will stay put once the preload is set... How preload is set is the next question that comes to mind.
Thoughts ?
What catched my eye is the belleville washers at the rear end.
In my limited experience with that type of cartridge, springs are usually used to preload the spindle bearings and take care of thermal expansion.
Here, the washers obviously tend to spread the cones the opposite way, in the direction that would loosen the bearings.
Since the spindle sat on a shelf for years (may be decades) before I got it, I thought about taking it apart to regrease it, but that arrangement is totally new to me.
The nut at the rear end is as simplistic as can be, without any locking system of any sort.
Can't figure out how one can be sure it will stay put once the preload is set... How preload is set is the next question that comes to mind.
Thoughts ?