Designed to reduce set-up times on lathes, the new BR-series of three-jaw chucks from Japanese firm Kitagawa provides a gripping accuracy of 0.01 mm TIR (total indicator reading) or less when using optional T-Nuts Plus jaws. The repeatability of jaw exchange is within the same tolerance, even on the largest chuck. BR-series chucks come in 6, 8, 10 and 12” versions, and are available in the UK and Ireland through sole agent 1st Machine Tool Accessories.

BR chucks are now Kitagawa’s standard offering and are interchangeable with its B-series and the large through-hole BB-series, which are both superseded. The TIR of these ranges was only guaranteed to within 0.02 mm.

Due to a new base jaw design and lower jaw lift, gripping forces at the maximum rotational speed of the chucks are now 10-15% greater to enable better metal removal rates. Kitagawa has maintained high spindle speeds throughout the range to enhance the surface finish of turned components.
On twin-spindle chucking lathes, which are becoming ever-more prevalent in turning shops, the better rotational accuracy of the workpiece allows more precise synchronous transfer from the main to the counter spindle for second-operation machining. Gripping force is up to 153 kN for the 12” chuck, while maximum rotational speed, attainable on the 6” model, is 6000 rpm.
Every chuck includes a QR code on the side to allow the download of product data.

For further information www.1mta.com/product/br-series