Pull studs S 20 × 2

Pull Stud Cone Screws are critical components used in CNC machining tools. They connect the cutting tool to the machine spindle and ensure the proper retention of the tapered tool holder (such as an ER collet or HSK tool holder).

Material: Usually made from high-strength alloy steel (e.g., 42CrMo4 or SCM415) to withstand high stress.

Surface Treatment: Often surface-hardened or coated for wear and corrosion resistance.

Threading: Typically have metric threads (M12, M16, M24, etc.) to fit different tool holder types.

Taper Angle: Designed for precise and stable engagement with the spindle via the clamping force of the retention mechanism.

Types: Vary depending on the system, such as:

BT (BT30, BT40, BT50)

CAT (CAT40, CAT50)

HSK (HSK50, HSK63, HSK100)

A low-quality or worn-out Pull Stud can cause tool instability, poor cutting performance, or even breakage.

Proper cleaning and maintenance help prevent loosening and premature wear.

Depending on the machining operation (e.g., heavy cutting or high-speed rotation), choosing the right Pull Stud is crucial for safety and precision.