Brief introductionCNC machine OZ collet chuck holder BT for drill end mill and taps, straight shank collet clamping tool for various sizes of cylindrical shank, high speed and high precision machining.Mechanical spindle and cutting tools and other accessories.High Precision BT shank Tool Holder ,balanced G6.3 or G2.5 For choose.BT Tool Holders for mechanical spindle and cutting tool and other accessory tool connection. Is a simple, popular spindle shank connection standard, mainly BT30 BT40 BT50... Etc.. Mold industry, and high-speed engraving machine, used more. SpecificationsMill chuck BT-OZ Name: Used: special alloy steel the, hardness is 45-48HRC Material Accuracy: 0.01mm Ontology Description: for example BT40OZ2580 Model Stands for BT "shank BT40" Stands for handle "type OZ25" 80 represents "length handle" Types: BT40OZ2580 Common BT40OZ25120 BT40OZ3280 BT40OZ32150 BT50OZ2590 BT50OZ25130 BT50OZ32105 BT50OZ32150 Coolant: AD, B, AD/B can be made according to cutomer requirementsball bearing Nut Dynamic balancing: G6.3/12000rpm, G2.5/25000rpm Products advantages 1. The unique design of nut: high speed cutting, reduce drag and cutting noise and improve work efficiency,Balance for G2.5 30000rpm. G6.3 12000rpm. 2. General purpose high speed, high precision machining, cutting effect is good. 3. special coating surface treatment,improve the hardness and endurance of the surface,cleaness better,accuracy stable,surface 4. higher system accuracy. 5. High hardness, toughness and wear resisance, High thermo stability and high heat resistance