Product Name: Bt30 Bt-Er Collet Tool Holder ISO Standard for CNC Milling Model NO.: BT30 Certification: ISO 9001:2000, CE Material: Ceramic Type: Collet Chuck Tool Holder Customized: Customized Size: Bt30 Logo Printing: Without Logo Printing Model Number: Bt30 Usage: Collet Chuck Tool Holder Raw Material: 20crmnti HRC: 56-60 Application: Tool Holder Brand: Preda Stock: Rich OEM: Accept Precision: Under 0.005mm Package: Box Trademark: PREDA Transport Package: Plastic Box Specification: ISO9001-2000 Origin: Changzhou-Jiangsu HS Code: 8207709 Product Description SpecificationsBT30 BT-ER Collet tool holder ISO standard for cnc millingBasic Material : 20CrMnTiHardness : HRC56-60The depth of carburizing : more than 0.8mmAccording to the need to do the precise dynamic balance , G2.5.20000-50000RPMTogehter with the AAA level (0.005mm) collet, obtain better processing effectDescriptionBT tooling comes in a range of sizes designated as BT30, BT40, BT50, etc, and uses the same NMTB body taper as CAT, BT tooling is symmetrical about the spindle axis. This gives BT tooling greater stability and balance at high speeds. BT tool holders will accept both imperical and metric sized tools, BT tooling looks very similar and can easily be confused with CAT tooling. The difference between CAT and BT is the flange style, thickness, and the thread for the pull stud is a difference size. BT tool holders use metric thread pull stud.Features1.BTNOtapershankisinconformitywithAT3standard;2.Balancedto25,000RPMatG2.53.T.I.R.0.005mmmeasuredfromtapertocolletpocket4.ERcolletchuckshandleawiderangeofmachiningjobswithouthavingtobuynewtoolholders.Simplychoosetherightsizecolletforthejob,settooldepth,andtightenthecolletnutandpullstudtothepropertorqueusingatorquewrenchandtighteningfixure.TYPEchucking Diad1d2L1LMNutColletSpannerBT30-ER11-701-7191970118.4M14X0.75ER11AER11ER11ABT30-ER11-100100148.4BT30-ER16-701-10282870118.4M22X1.5ER16AER16ER16ABT30-ER16-100100148.4BT30-ER20-701-13343470118.4M25X1.5ER20AER20ER20ABT30-ER20-100100148.4BT30-ER25-701-16424070118.4M32X1.5ER25UMER25ER25UMBT30-ER25-100100148.4BT30-ER32-703-20504870118.4M40X1.5ER32UMER32ER32UMBT30-ER32-100100148.4BT40-ER11-701-7191970135.4M14X0.75ER11AER11ER11ABT40-ER11-100100165.4BT40-ER11-150150215.4BT40-ER16-701-10282870135.4M22X1.5ER16AER16ER16ABT40-ER16-100100165.4BT40-ER16-150150215.4BT40-ER20-701-13343470135.4M25X1.5ER20AER20ER20ABT40-ER20-100100165.4BT40-ER20-150150215.4BT40-ER25-701-16424070135.4M32X1.5ER25UMER25ER25UMBT40-ER25-100100165.4BT40-ER25-150150215.4BT40-ER32-703-20504870135.4M40X1.5ER32UMER32ER32UMBT40-ER32-100100165.4BT40-ER32-150150215.4BT40-ER40-1003-266358100165.4M50X1.5ER40UMER40ER40UMBT40-ER40-150150215.4BT50-ER16-1003-102828100201.8M22X1.5ER16AER16ER16ABT50-ER16-150150251.8BT50-ER20-1003-133434100201.8M25X1.5ER20AER20ER20ABT50-ER20-150150251.8BT50-ER25-1003-164240100201.8M32X1.5ER25UMER25ER25UMBT50-ER25-150150251.8BT50-ER32-1003-205050100201.8M40X1.5ER32UMER32ER32UMBT50-ER32-150150251.8BT50-ER40-1003-266360100201.8M50X1.5ER40UMER40ER40UMBT50-ER40-150150521.8