View complete catalog page
- Collet Chuck accepts all ER20 collets
- Works on all BT30 machines with Dual Contact Spindles
- Compatible with BIG-PLUS® spindles
- All critical tool holder surfaces precision ground
- Threaded for stop screw type 1 (not included)
- Made from hardened alloy steel
- Balanced to G2.5 at 20,000 rpms
- Gage length is 90mm (3.54 inches)
- Concentricity is less than .0001 at collet face
- Collet nut is included
- Mini Collet Nut is slimmer than standard collet nut
- ER20 Mini Nut has an id thread of 24mm X 1.0 pitch. Outside diameter is 1.102 inches (28mm)
- Must use ER20M collet wrench
- Rear thread for pull stud is m12 x 1.75
- View BT30 Pull Studs
- MariTool Part# is BT30-ER20-90MDT
*BIG-PLUS® is a trademark of Daishowa Seiki Kabushiki Kaisha; Big Daishowa Seiki Co., Ltd., Corp.
Compatible with BIG-PLUS® spindles, but not licensed.
