Pioneer announced two additional sizes in their recently launched BC Mill Chuck milling line. This bearingless, low profile chuck line now features ⁵⁄₈" and ½" BC Chuck Holders.

"We take great pleasure in providing our customers with the precisely what they need to keep their businesses moving efficiently," said Pioneer Tool Holder Division Vice President, Lee Flick. "We're always working to design better, faster and smaller tools at an affordable price."

This size expansion increases Pioneer's inventory to include ½, ⁵⁄₈, ¾, 1 and 1 ¼ inch chucks. The tool's design leads to a notable cost savings for the end-user by providing a more precise cut and increasing cutter efficiency, according to the company. The design also addresses customer issues inherent in traditional mill chuck designs.

Pioneer's new BC Mill Chuck Line is designed to provide a positive lock with no bearing to crush if over tightened. Its profile is substantially lower than competitive models and features a self-sealing bore design for high-pressure applications. It is also available with customized Jet-Blast modification, exclusive to Pioneer. Due to fewer moving parts in the design, the BC style Mill Chuck is easier to balance and more consistent in balance repeatability. The design lends itself well to be a more cost effective platform for special ID sizes and applications.

In addition to these standard sizes, Pioneer has developed a 2" BC Mill Chuck (pictured) and is currently offering three free samples for demonstration and testing.