Abstract: A method and machine (10) for stud installation are described. The machine comprises: a support arrangement (20) configured to support a tyre (14) and a shaft (12) on which the tyre is mounted for angular displacement about a longitudinal axis of rotation, and a stud insertion arrangement (22), at least part of which is displaceable relative to a tyre supported on the support arrangement, and which is configured to insert studs into holes in the tyre.

Abstract: A frame (12) for demounting a tyre from an HPGR shaft is disclosed. The frame comprises: a support comprising a plurality of structural beams (42a,c,d) adapted to rest on a surface; a registration pin (46) upstanding from the support and dimensioned to be accommodated within a bore defined by the shaft; a tyre support (60) at least partially surrounding the registration pin; and a dampener arrangement (76) mounted on the tyre support and being configured to engage with a lower surface of a tyre to provide balanced support around the circumference thereof, the dampener arrangement including at least one dampener. A method of demounting a tyre from an HPGR shaft is also described.