Bar clamp Bessey SG40M — clamp opening 40 cm, stainless steel bar, black

The Bessey SG40M bar clamp provides a 40 cm clamp opening and a stainless steel bar designed for reliable holding during woodworking, metalworking and assembly tasks. The tool combines a robust fixed head and an adjustable sliding jaw for precise positioning of workpieces. Constructed from steel with a stainless steel bar, it is intended for workshop and construction use and supplied as a single-piece unit with a compact weight of approximately 3.17 kg.

Advantages

The clamp delivers clamping force up to 12,000 N when tightened to a torque of 40 Nm, and its optimised rail profile provides around 20% more clamping force per spindle rotation compared with conventional profiles. The sliding arm transfers force linearly for improved safety during use, and the pressure plate includes a heat‑resistant sintered steel insert that extends service life and can tilt up to 35° to accommodate angled surfaces.

Suitable for

• Securing workpieces during glue-ups in woodworking
• Holding metal parts for welding, drilling and assembly
• Clamping components in cabinetry and furniture production
• General workshop and construction fixation tasks

Key specifications

• Clamp opening: 40 cm
• Bar material: stainless steel
• Body material: steel
• Clamping force: up to 12,000 N at 40 Nm tightening torque
• Efficiency: approx. 20% more clamping force per spindle rotation due to optimised rail profile
• Sliding arm: linear force transfer for increased safety
• Pressure plate: heat‑resistant with sintered steel insert, tiltable up to 35°
• Weight: approx. 3.17 kg

How to use

Position the fixed head against one side of the workpiece and slide the adjustable jaw to contact the opposite side. Apply torque to the spindle or handle until the desired clamping force is reached; the clamp is rated for up to 12,000 N at a tightening torque of 40 Nm. The tilting pressure plate can be adjusted to align with non‑parallel or angled surfaces before final tightening. Release the clamp by reversing the spindle or operating the release mechanism, then slide the jaw away from the workpiece.

Usage recommendations

Use protective pads or scrap wood between the pressure plate and delicate surfaces to prevent marring. Do not exceed the specified tightening torque to avoid damaging the clamp or the workpiece. For repetitive production tasks, inspect the sintered steel insert and rail profile periodically for wear and keep the stainless steel bar clean to ensure smooth sliding and consistent clamping performance.