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Article no.: 302767

ER collet chuck Form AD BT 40 A = 100

Brand: HOLEX
Arbor standard JIS B6339
Arbor standard JIS B6339
Machining strategy HPC
Shape AD
Concentricity ≤ 3

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External and internal taper ground.
  • All shanks fine bead blasted. Balancing quality G6.3 / 18,000 rpm.
  • High-quality precision clamping nut.


For clamping tools with parallel shank in collets to DIN 6499 Form A and B.

Supplied with:

ER clamping nut.

Optional extras:

ER collets No. 308881 − 309434, ER chuck keys No. 309680 – 309745 or No. 613300.
Pull studs (PS) No. 308760 − 308806. Pull stud wrenches No. 308820; 308835.


Matching clamping nut No. 309580 or 309610.

Technical Data

BT 40 A = 100
Arbor standard
JIS B6339; JIS B6339; JIS B6339
≤ 3 µm
Machining strategy
Type of product
Collet chuck

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