Drill Chuck with Key MODECO MN-97-040 1/2" (13 mm) — keyed chuck for drills

MODECO keyed drill chuck MN-97-040 is a compact, manually tightened chuck with a 1/2" (13 mm) maximum capacity designed for mounting round and hex shank bits in electric drills and drill drivers. The chuck uses a separate key to engage the geared ring and tighten the three jaws evenly, providing a secure mechanical grip for general-purpose drilling in metal, wood and common workshop materials. Its straightforward design makes it compatible with tasks that require frequent bit changes while maintaining firm clamping force under typical drilling loads.

Advantages

The keyed mechanism ensures strong, concentric clamping and reduces slippage of smooth-shank bits compared with keyless chucks. A 1/2" (13 mm) maximum capacity accommodates a wide range of twist, brad-point and hex-shank bits used in home and professional applications. The chuck’s metal construction and geared key engagement allow consistent tightening torque and dependable repeatability during repeated mounting and removal of bits.

Suitable for

• General-purpose drilling in wood, metal and plastic
• Workshop repairs and maintenance where secure bit retention is required
• Applications with smooth-shank or hex-shank bits that risk slipping in keyless chucks
• Drill operations requiring higher clamping torque for larger-diameter bits

Key specifications

• Maximum capacity: 1/2" (13 mm)
• Mount type: keyed chuck with separate tightening key
• Jaw type: three-jaw, geared tightening for concentric clamping
• Material: metal construction for durability
• Compatible bit types: round-shank and hex-shank drills and drivers

How to use

Open the jaws by turning the chuck body counterclockwise to accommodate the bit shank, insert the bit so it seats fully and centered, then insert the key into the geared ring and turn clockwise to tighten the jaws evenly around the shank. Confirm the bit is firmly clamped by applying moderate hand torque before starting the drill. For removal, loosen the chuck with the key by turning counterclockwise and withdraw the bit.

Usage recommendations

Use the chuck key to achieve proper clamping torque; avoid overtightening which can damage bit shanks or chuck threads. Periodically clean the chuck jaws and lubricate lightly with machine oil to maintain smooth operation and prevent corrosion. Select a drill speed and bit type appropriate for the work material to reduce load on the chuck and ensure consistent performance.