For organisations operating in or with the UK, BSI recommends purchasing the adopted British Standard.
This document specifies dimensions of tapered receivers for modular taper interfaces with ball track system with four locking elements for automatic and manual tool exchange to be applied on machine tools (e.g. lathe machines, drilling machines, milling machines and turn/milling machine centres). A range of receiver sizes is specified.
The torque is transmitted by friction and locking elements.