DIN69872A/B Pull Stud for DIN69871 Tool holders

DIN69872 PULL STUDS for DIN69871 SK taper shank collet chuck

DIN 69872 pull studs has A type (coolant thru) & B type (non coolant thru) two types, that mainly using for ChongDe high precision DIN 69871 SK30/40/50 tool holders. Theθ degree is 75°. Made from high quality low carbon alloy steel 20CrMnTi processing thread after carburizing & quenching.

Kindly Note: Please make sure the Retention Knob you choose is the right one for your machine. Using wrong Retention Knob can cause damage to your machine.

Features:

1. Material: 20CrMnTi;

2. Hardness: 54-57 HRC;

3. Carbon depth:＞0.8；

4. Hardness of thread is lower: 35±5 HRC, to protect shank thread.

5. Cryogenic treatment and thermal aging treatment can reduce the inner residual stress, improve durability and precision stability.

6. The nickel coating surface of the pull stud has good effects of anti-rust and wear-resisting.

Product Drawing and Size