Keyless Drill Chuck Makita 763128-2, 1/2"-20 Mount, Max Capacity 1.3 cm

Makita 763128-2 is a keyless drill chuck designed for rapid bit changes on drills and drivers with a 1/2"-20 threaded mount. With a maximum capacity of 1.3 cm, this chuck accepts a range of small-diameter bits commonly used for metal and wood drilling tasks. The keyless design enables hand-tightening and quick swapping of bits without the need for a separate chuck key, making it suitable for workshop, maintenance and production environments where frequent tool changes are required.

Advantages

The keyless mechanism provides faster bit changes and reduces downtime compared with keyed chucks. Its 1/2"-20 threaded mount is compatible with many Makita and industry-standard drills and drivers, allowing straightforward replacement or upgrade. The compact maximum capacity of 1.3 cm ensures secure clamping of small-diameter bits for precise drilling in wood, metal and composite materials. The chuck is constructed to withstand routine workshop use and repeated tightening by hand or with drill torque.

Suitable for

• Workshop drilling and maintenance tasks
• Metalworking and sheet metal drilling with small-diameter bits
• Woodworking where quick bit changes are needed
• Retrofit or replacement on compatible drills and drivers

Key specifications

• Mount type: 1/2"-20 threaded mount
• Maximum capacity: 1.3 cm (13 mm)
• Chuck type: keyless (hand-tightening)
• Compatible materials: wood, metal, composite

How to use

Ensure the drill is powered off and, if applicable, the battery is removed before changing the chuck or bits. Hand-open the chuck jaws by rotating the outer sleeve counterclockwise, insert the correct diameter bit, then tighten by rotating the sleeve clockwise until the bit is firmly clamped. For secure seating, apply drill torque at low speed briefly to fully seat the bit. Verify that the bit is centered and held firmly before beginning drilling operations.

Usage recommendations

Use the chuck within its maximum capacity (1.3 cm) and avoid over-tightening by excessive hand force; apply drill torque for final seating. Regularly inspect the jaws for wear or debris and keep the threaded mount clean before installation to ensure reliable clamping and safe operation.