Each holder comes with a lab certificate on its taper accuracy and runout measurement on its taper accuracy and runout measurement. The thread select grinding process obtains the better interchangeability. Internal set screw is included and can be used as a stopping pin to prevent end mill or drill from sliding backwards while performing heavy cutting. The CAT40 CAT50 BT30 BT40 7:24 taper is inspected on production line by Stotz Air/Electronic instrument to ensure AT3 or better taper contact. 4 PCS BT40 - ER20 collet chucks with.
Gage length: 2.75----4 pcs. PRODUCED ACCORDING TO AT3 SPECIFICATIONS. Alloy steel hardened to 50-52 rc.Works on all BT40 machines. Collet chuck accepts all ER20 collets. Coolant flows through tool holder. 70mm Gage Length, Hex Nut (included).
Balanced to 25,000 RPM at G2.5. 0.0001 runout from taper to pocket.
Taper ground to AT3 standard. Concentricity/runout less than: 0.0001/0.003mm.
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The item "4Pcs BT40 ER20 COLLET CHUCK W. 2.75 GAGE LENGTH Tool Holder Set Top Seat Sale" is in sale since Saturday, March 16, 2019. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\CAT Holders".
The seller is "bestdiscountvipstore" and is located in Ontario, California. This item can be shipped to United States, Canada, Mexico.