Tools for the Workshop

Fig. 1 shows a small tool which has been produced by Civitas Trading Corporation Ltd., Wigmorc House, 10 Duke Street, London, Wl, forthcremoval of ball bearings from shafts without damaging the race. A range of collets are provided to fit various types of bearings, and these are held in a self‐centring chuck which causes them to grip the inner race. The hollow body of the tool carries a thrust pin which is made in two parts separated by a ball bearing, to prevent the surface of the end of the shaft being damaged by the turning of the pin end. The threaded thrust pin is screwed home with a tommy bar and the race drawn offthc end of the shaft. It is claimed that no damage is caused to the race, and it can be used again if not otherwise due for replacement. Extension tubes are available to cater for bearings mounted at a distance along the shaft beyond the reach of the tool. The device is known as the Tracta ball and roller bearing extractor, collets being also provided which will fit roller races.