Spyderedge
Titanium
- Joined
- Aug 28, 2013
- Location
- NY
At what angle does a machine taper become self holding/locking?
R8, B&S, MT, and similar tapers have to be pounded out of their sockets, while the 2A collets from my lathe, and C series collets just pop free when the draw tube is loosened.
Let's say for this question both collet and socket will be machined to a standard tolerance and very lightly oiled (like would be in a shop scenario)
R8 collets have a ~17* included angle, and 5C 20* included. So the difference between self holding and not must be between those two....
R8, B&S, MT, and similar tapers have to be pounded out of their sockets, while the 2A collets from my lathe, and C series collets just pop free when the draw tube is loosened.
Let's say for this question both collet and socket will be machined to a standard tolerance and very lightly oiled (like would be in a shop scenario)
R8 collets have a ~17* included angle, and 5C 20* included. So the difference between self holding and not must be between those two....