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BT/ER toolholders are available in various gauge lengths. They are designed for use on machining centers with automatic tool change. BT/ER collet holders are balanced by design to balanced for high speeds & precision .
For highest precision and best results, the total system counts. For that reason, all our components (collets, clamping nuts and toolholders) are carefully matched to fit together. This guarantees lowest T.I.R. and maximum balancing. For best manufacturing results and longest tool life, please use Chongde toolholders together with Chongde collets and clamping nuts only.
We can provide various kinds of shank, such as ER shank set, SK shank set, NT/R8 collet shank, MTA/B Morese shank, C Straight shank (A/M type), BT/NT Needle Roller Type Milling Chuck, BT/FMA/B/C Face Mill Arbors, CAT40-SLN End Mill Adapters etc. The material is fine spring steel: 20Crmnti, the hardness is HRC55-60 and the precision is 3v or 5v. With unique process technology, we ensure the appearance nice and the stability strong, the quality has reached the standard of BT-403 and DIN69871, so they can be widely used on the numerical contral machines with high precision high speed and high stability and balance, so they can meet various demands of different customers.