Drawstud Setting and Use Instructions

Power Tool Lock & Ejector System

The Lucas Power Tool Lock & Ejector tool holding system is designed to give maximum tool holding power, minimum tooling 'spring', and allow for rapid changing of the tool holder shank.

The Lucas PTE system is a 'Wedge-Locking' system that delivers much greater 'holding power' than is possible with a simple collet if it is properly used. Following, are a few simple rules for how to properly install and adjust the Lucas PTE drawstud into tooling shanks.

The PTE drawstud (the drawback adapter that inserts into the rear of the tooling shanks) is an extremely important part of the overall operation of the Lucas tool holding system.
 

1. PLEASE -do not attempt to use drawstuds from other brands of machines. The design is unique to Lucas machines. Drawstuds from other machines will NOT properly fit and may damage the PTE mechanism or cause tooling to be improperly retained in the spindle.
    
2. PLEASE -do not attempt to interchange drawstuds between models of Lucas machines. While the overall design of the PTE system is similar among the various models of Lucas machines, there are many slightly different 'versions' of the PTE system that vary with both model number and age of manufacture. NEVER use a drawstud if you are not certain that it is the correct part number drawstud for your specific machine. An incorrect drawstud may damage the PTE mechanism or cause tooling to be improperly retained in the spindle.
    
3. PLEASE - do not attempt to manufacture this item yourself. It is a specially heat-treated, high- precision part with unusual angles and tolerances. A 'homemade' drawstud may cause expensive damage to the PTE mechanism or may cause tooling to be improperly retained in the spindle.

It is extremely important that the drawstud be a TIGHT fit into the threads at the rear end of the tool shank. Most Lucas drawstuds are equipped with a means of expanding the threads to assure a tight thread fit. A loose thread fit will cause the drawstud to 'give' slightly when it is grabbed by the collet. This marginal difference from the proper setting position may be sufficient to significantly reduce the holding power of the PTE system.

When the drawstud is installed into the rear of a tooling adapter, it must be screwed in until the end of the drawstud is flush with the gauging surface of the PTE setting gage. Even a few thousandths of an inch incorrect setting may reduce the holding power of the PTE system.

If you find that the flush setting is NOT properly holding the tooling, the setting gage must be recalibrated – see other documentation for instructions.