100mm (4") 3-Jaw Self-Centring Chuck with Back Plate for 3" & 4" Rotary Table

This 100mm (4 inch) 3-Jaw Self-Centring Chuck is a high-precision workholding solution designed specifically for 3" and 4" rotary tables used on milling machines and precision machining setups. Manufactured to professional standards, this chuck ensures accurate centring, secure clamping, and repeatable positioning for circular milling, indexing, and machining operations.

The chuck body is made from high-quality SG (Spheroidal Graphite) iron, offering excellent rigidity, strength, and vibration damping. The jaws are manufactured from hardened and precision-ground tool steel, providing strong gripping force, high wear resistance, and long service life. An extra set of reversible jaws is supplied, allowing both internal and external gripping of round, square, or hexagonal workpieces.

Supplied complete with a precision-machined mounting back plate, fixing tee nuts, screws, and hardware, this chuck is ready for direct installation. The back plate is drilled to suit both 3-slot and 4-slot rotary tables, making it compatible with a wide range of machines. The accurately machined recess on the back plate mates perfectly with the chuck recess, ensuring zero play, improved concentricity, and vibration-free operation.

Ideal for milling machines, rotary table setups, toolrooms, and workshops, this chuck is perfect for precision machining, indexing, circular milling, drilling, and grinding operations.

Key Features & Specifications:

• Chuck Diameter: 100mm (4")

• Type: 3-Jaw Self-Centring Chuck

• Body Material: High-quality SG iron

• Jaw Material: Tool steel, hardened & ground

• Jaws: Reversible jaws supplied (internal & external gripping)

• Mounting: Supplied with precision back plate

• Compatibility: Fits 3" & 4" rotary tables

• Slots Supported: 3-slot or 4-slot rotary tables

• Back Plate Design: Perfectly machined recess for accurate fit

• Accessories Included: Tee nuts, fixing screws (as supplied)

Applications:

• Rotary table machining

• Circular milling and indexing

• Precision drilling and boring

• Toolroom and workshop operations

• Milling machine workholding

Benefits:

• Accurate self-centring for repeatable machining

• Rigid SG iron body reduces vibration

• Hardened jaws provide strong and secure grip

• Multi-slot compatibility increases versatility

• Precision back plate ensures zero play and high concentricity