Bessey screw clamp GZ 250/120 mm — steel bench clamp, model BY GZ25

The Bessey screw clamp GZ 250/120 (model BY GZ25) is a steel bench clamp engineered to secure workpieces during metalworking, assembly and maintenance operations. It features a 250 mm throat depth and a 120 mm jaw opening, with a threaded spindle that provides adjustable and reliable clamping pressure. Constructed from steel, the clamp is intended for fixed bench mounting to ensure stable positioning of parts while sawing, filing, drilling or performing precision finishing tasks.

Advantages

The clamp's steel construction offers strength and durability for repeated use in workshop environments. The threaded spindle enables fine adjustment of clamping force and accurate positioning of workpieces. A 250 mm throat depth allows access further from the bench edge, while the 120 mm jaw opening accommodates a range of material thicknesses. The design is straightforward for mounting and integration into workbenches, providing consistent grip during machining and assembly operations.

Suitable for

• Holding metal and wooden parts for drilling and filing
• Securing components during assembly and fitting
• Fixtures for precision grinding, sawing and finishing
• Use in fabrication, maintenance and general workshop tasks

Key specifications

• Material: steel body and jaws
• Throat depth: 250 mm
• Maximum jaw opening: 120 mm
• Clamping mechanism: threaded spindle
• Mounting: bench/fixed mounting design

How to use

Secure the clamp to a sturdy workbench using appropriate fasteners through the mounting points. Open the jaws by turning the spindle counterclockwise, place the workpiece between the jaws and tighten the spindle clockwise until the workpiece is held firmly but without over-tightening. Check alignment and positioning before beginning machining or assembly. Loosen the spindle to release the workpiece when the operation is complete. Regularly inspect the spindle and contact surfaces for wear and remove metal shavings or debris to maintain reliable clamping.

Usage recommendations

Use protective padding when clamping soft or finished surfaces to avoid marring. Avoid applying impact loads to the clamp and do not use the spindle as a lever beyond its intended range. Perform periodic maintenance: clean threads, lubricate the spindle lightly, and check mounting bolts for tightness to ensure long service life.