ER-40 Collet Adapter Kit
This adapter permits use of ER-40 series collets on on lathes up to 1-3/4" threaded spindles. The ER series collet is a parallel closing design available from most industrial suppliers. Front closing collets permit full utilization of through hole in spindle. (Kit shown is ER-32. ER 40 is similar)
The kit comes with material, drawings and instructions. Included is enough material to produce a duplicate of your spindle nose to serve as a thread gauge. Machining includes internal and external threading and accurate angle setting for machining from the compound slide. The kit also provides both material and drawings for machining a complete, though not standard ER nut. If you prefer to do a little less machining, dimensions are also included for the ER specification so that a standard nut may be purchased from any of the major industrial suppliers.