Description
Mounts round shank boring bars rigidly within a lathe quick-change tool block. The Magnum HBB12 minimizes tool deflection during precise internal turning and threading operations.
Features
- Bar Capacity – Holds 1/2″ round shank boring bars firmly.
- Shank Dimension – Square holder body measures approximately 3-1/8″ long by 3/4″ square.
- System Compatibility – Matches MAG-BB125 9-piece boring bar sets, MAG-BB123, and MAG-BB12214 individual bars.
Specifications
- Capacity – 1/2″ Round (12.7mm)
- Body Size – 3-1/8″ L x 3/4″ sq. (79.375mm x 19.05mm)
- Supplier Part Number: 375-BH12
- KMS Product Code: MAG-HBB12
Common Shop Applications
- Rigidly holding boring tools on engine lathes
- Internal boring and face counterboring
Recommended Shop Add-Ons
- Equip your lathe with a Magnum Boring Bar Set
- Speed up tool changes using a Magnum Quick Change Tool Post
Frequently Asked Questions
Q: Will this block accommodate square profile bits? A: No, this holder is specifically bored to fit 1/2-inch round shank tools.
Q: What size tool post slot does this fit? A: It features a 3/4″ square body that fits standard tool post holders.
