Drill Chuck with Serrated Crown Mora Prima 1–10 mm B12 RHM

The Mora Prima drill chuck with serrated crown is a compact keyless-style chuck designed for secure bit retention and reliable performance in light to medium drilling tasks. With a 1–10 mm clamping range and a B12 mount, this chuck is compatible with a variety of rotary drilling tools and bench equipment that accept the B12 interface. The serrated crown provides enhanced grip on drill bits and accessories, helping to reduce slippage during drilling operations while maintaining a compact form factor suitable for tight workspaces.

Advantages

This drill chuck offers precise bit clamping across a 1–10 mm range and a robust serrated crown that improves torque transfer and reduces slippage. The B12 mount ensures straightforward compatibility with machines and adapters designed for this interface. Its compact design is beneficial where a low-capacity, space-saving chuck is needed without compromising on secure retention and ease of bit changes.

Suitable for

• Metalworking: drilling small to medium holes in sheet metal and light components
• Woodworking: accurate pilot holes, dowel and furniture assembly tasks
• General workshop use: repairs, maintenance and hobby projects requiring precise bit holding

Key specifications

• Clamping range: 1–10 mm
• Mount type: B12
• Crown style: serrated for improved grip
• Application: compatible with rotary drilling equipment and bench drills accepting B12
• Form factor: compact, low-capacity chuck

How to use

Open the jaws by rotating the chuck to the open position, insert the drill bit so that it is seated centrally between the jaws, and tighten the chuck until the bit is held firmly. If the machine requires, use the appropriate key or tightening method for the serrated crown to ensure secure clamping. Verify concentricity and tightness before starting the machine and periodically check the bit during use to maintain safe operation.

Usage recommendations

Use this chuck for tasks within its 1–10 mm capacity and avoid attempting to clamp oversized shanks. Inspect jaws regularly for wear and clean debris from the serrations to preserve gripping performance. For high-torque or heavy-duty drilling choose a higher-capacity chuck designed for those loads.