Bison Steel Scroll Chuck - 4 Jaw - 1 Piece Jaw (Rear Mount) - 315mm

The Bison 3704 series rear-mount, 4 jaw steel scroll chuck is designed for reliable, high-precision workholding on lathes. Sized at 315 mm in diameter, it’s ideal for machinists, engineers, and hobbyists who need fast, secure gripping of round and irregular workpieces, with quick, true centering on every part.

With a balanced scroll plate and hardened, ground working surfaces, this chuck delivers long service life and consistent accuracy. It ships with a wrench and a complete jaw set: reversible hard jaws for versatile gripping and outside hard jaws for straightforward, square holding. All Bison scroll chucks are 100% made in the Bison Bial factory in Poland, a name trusted for quality and durability.

• Balanced scroll plate for smooth, accurate running: minimizes runout and enables rapid, repeatable centering on each part.
• Hardened and ground surfaces for long life: resist wear and maintain gripping accuracy through many machining cycles.
• Ready-to-use with versatile jaws and wrench: includes reversible and outside hard jaws plus a wrench for quick setup and flexible workholding of a variety of part shapes.

By delivering secure, true grip with minimal runout, this chuck speeds setup and reduces rework. The durable construction and precision-ground surfaces stay reliable under demanding turning tasks, helping you achieve consistent finishes and accurate dimensions. With OEM-quality manufacture in Poland, you gain a dependable, long-lasting solution that supports both prototyping and production workloads.