Forkardt’s Ball-Lock Chuck Features a Composite Core

Originally titled 'Ball-Lock Chuck Features a Composite Core'

Forkardt’s newest version of the original universal ball lock concept chuck, the N.A. Woodworth ABL, features a “quick-lock” jaw mounting system along with a weight-reducing, non-metallic composite core that provides high strength with the advantages of low mass operation.

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Forkardt’s newest version of the original universal ball lock concept chuck, the N.A. Woodworth ABL, features a “quick-lock” jaw mounting system along with a weight-reducing, non-metallic composite core that provides high strength with the advantages of low mass operation. Together, the weight reduction and quick-change jaw system are designed to deliver secure, accurate workholding performance. These lightweight, quick-change jaw chucks are available as three jaw, self-centering or compensating systems and in sizes ranging from 160 mm to 460 mm (6" to 18") diameters. A variety of machine mounting styles, plates and adapters are also offered to match virtually all major machine structures and designs.

The quick-change jaw design allows change-overs to be accomplished in less than 60 seconds, is especially useful for low-volume, part-to-part runs and the frequent change-over requirements of job shop environments. The quick-lock, no loose screw-style mount eliminates the need for master jaw sets, helping to minimize investment costs, tooling inventories and weight, yet is configured to provide high levels of precision, setup ease and excellent repeatability, the company says.

The low weight composite core construction—establishing an approximate 40 percent weight reduction when compared with like capacity, conventional chucks—provides benefits in five distinct areas, including reduced power consumption for lower utility costs and “green” operations. Because of the chuck’s diminished mass, spindle life will typically improve as machine components are exposed to minimized wear and tear—also resulting in reduced costs for maintenance, repairs and replacement parts.

The reduction in mass allows the operator to ramp up to speed much quicker than with conventional pull-down chucks, Forkhardt says. This same benefit also holds true when ramping down after cutting is complete.

The chuck permits operation on low horsepower machines, expanding the working capacity and range of the machines, yet keeping capital investment and energy costs to lower budgeted levels.

The N.A. Woodworth ABL composite core body is designed to provide a dampening effect while machining. The core absorbs vibration during turning, which results in better part finishes, according to the company.

The quick-change jaw mounting design, with fewer parts, also contributes to lower weights, and the low mass reduces centrifugal forces to help prevent jaw slippage, machining errors and increased spindle speeds.