Trueborer is quick and accurate

Designed for creating perfectly concentric bores on hard or soft jaws, the Trueborer is infinitely adjustable within its specified clamping range. This allows fine adjustment for minimal skimming of jaws, which can also be through bored in one operation resulting in better T.I.R (total indicated run out) of any machined parts.

Sales Director, Maurice Day, says: “For any machine shop that has to regularly set up chucks for the production of accurate components the Trueborer offers a number of advantages. First, the fine adjustment saves jaw usage as only fine skims are required to achieve the accuracy required; secondly it reduces the time wasted looking for, or making, turning clamping rings; and, finally, one Trueborer can be used on many chucks.”

Trueborer is available in three sizes, ES16 covers chucks from 125 to 200 mm diameter at a clamping force of up to 8,000 daN, ES25 is for chucks between 250 and 315 mm diameter with a clamping force of 10,000 daN, while the largest ES42 is ideal for chucks from 400 to 600 mm diameter and supports clamping forces up to 13,000 daN.

“Any investment made in a highly accurate machine tool can be lost simply because the chuck-to-workpiece interface is not optimised. The Trueborer is the simplest and most cost-effective way of ensuring this and that the accuracy is maintained,” Maurice Day concludes.