APU (Automatic Precision Universal) refers to a type of high-precision drill chuck used with CNC milling and drilling machines. These chucks ensure secure clamping of straight shank drills and support automatic tool change systems.
Benefits of APU Drill Chucks:
- Universal compatibility: Suitable for standard drill bits and countersinks.
- High precision: Ensures low runout and accurate centering.
- Standard fit: Compatible with BT30, BT40, BT50 and other taper spindles.
- Supports automatic tool change: Ideal for CNC machines with tool magazines or turrets.
Applications:
APU drill chucks are commonly used in automotive, aerospace, electronics, and general CNC manufacturing industries where precision and efficiency are critical.
Example Marking:
BT40-APU16-110 refers to an APU chuck with a 16 mm clamping diameter and 110 mm length, designed for a BT40 spindle.