R8 Arbor Mounted 70mm 4-Jaw Independent Lathe Chuck – 7/16x20 UNF Compatible | Bluefox Tools

Take control of complex and precision workholding tasks with the Bluefox Tools R8 Arbor Mounted 70mm 4-Jaw Independent Lathe Chuck, engineered for machinists who demand versatility, accuracy, and robust construction in compact setups. This chuck combines a precision-ground 70mm 4-jaw independent chuck with a rugged R8 arbor, making it perfectly suited for vertical milling machines and mini lathes that support the widely used R8 spindle taper with 7/16" x 20 UNF drawbar compatibility.

Each of the four jaws operates independently, allowing you to grip a wide variety of workpieces—from square and rectangular bar stock to irregularly shaped components that standard self-centering chucks cannot securely hold. This independent action is vital when performing off-center turning, custom fixturing, or holding non-cylindrical shapes with exacting alignment needs. Whether you're working on prototyping, toolmaking, or custom machining, this chuck gives you complete control over centering and positioning.

The R8 shank arbor is precision machined and securely fixed to the chuck body, ensuring low runout and stable mounting inside an R8 spindle taper. The 7/16" x 20 UNF drawbar thread ensures compatibility with standard milling machine setups and many benchtop mills, making this chuck an extremely practical and versatile addition to your workshop.

Crafted from high-strength alloy steel and finished to exacting tolerances, this chuck resists wear, deformation, and vibration even under demanding conditions. The hardened jaws and body provide long service life, while the compact 70mm size offers ample holding capacity without overwhelming smaller machines. It's a smart choice for users needing precision on a limited footprint.

Ideal for both beginner and experienced machinists, this chuck allows for precise dial-in adjustments and secure clamping, which is critical for achieving professional results in metalworking, woodturning, or general fabrication.