BT40 (JIS B 6339) collet chuck with standard nut, ER32, ø1/8" - 3/4", center height 70 mm, G2.5 balancing

The ER32B40H70 is a premium BT40 collet chuck designed to meet JIS B 6339 standards, ensuring high performance and accuracy in machining operations. It is compatible with the widely used and versatile ER32 collets, supporting tool diameters ranging from Ø1/8” to 3/4”, making it an ideal choice for various machining applications.

With a center height of 70 mm, this collet chuck provides excellent reach and stability. It is manufactured from alloyed case-hardened steel, treated with a blackened and bright finish for exceptional durability and resistance to wear. Balanced to G2.5 at 25,000 RPM, it ensures smooth and reliable operation, even at high speeds.

Additional specifications include a pull stud thread of M16x2.0, a taper tolerance of < AT3, a hardness range of HRC 56-60, and a carbon depth of 0.8±0.2mm for enhanced longevity. The surface roughness of Ra<0.005mm guarantees precision, and AD cooling capability supports efficient machining. Complete with a standard nut, the ER32B40H70 is a dependable and versatile choice for a variety of machining tasks.

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