Open-ended striking wrench JCB 50 mm model JCB-79350

Open-ended striking wrench JCB 50 mm model JCB-79350 is a heavy-duty palm wrench designed for applications that require direct hammering to apply sudden impact torque. The 50 mm jaw size provides a broad contact surface for large nuts and bolts, reducing rounding and improving force transfer. Constructed for use in construction, plant maintenance and industrial settings, this striking wrench is intended to withstand repeated blows and transmit impact force from a striking tool to fasteners.

Advantages

The open-ended striking wrench features a robust contact area and reinforced body geometry to resist deformation under repeated hammer impacts. Its 50 mm opening fits common large fasteners used on construction equipment and structural assemblies. The design allows rapid placement on bolts without the need to slide over shafts, and the material selection and heat treatment provide enhanced wear resistance and long service life in demanding environments.

Suitable for

• Loosening or tightening large nuts and bolts on construction machinery
• Maintenance and repair tasks where impact striking is required
• Plant and heavy equipment servicing
• Field repairs where access is limited and quick engagement is needed

Key specifications

• Jaw opening: 50 mm
• Type: open-ended striking (palm) wrench
• Intended use: impact application with striking tools
• Contact design: broad contact surface for large fasteners
• Construction: reinforced body for impact resistance

How to use

Select the wrench and position the open end over the nut or bolt so the contact faces sit fully on the fastener. Hold the wrench firmly by the body with appropriate hand protection and ensure other personnel are clear of the impact area. Apply controlled strikes to the wrench’s striking face using a suitable hammer or striking tool to deliver impact torque. Inspect the wrench and fastener periodically during use for fit and damage; do not use if the wrench is visibly deformed or cracked.

Usage recommendations

Use appropriate personal protective equipment, including safety glasses and impact-resistant gloves. Ensure correct jaw size and secure seating on the fastener before striking. Avoid excessive side loading and do not use the wrench as a lever for prying. Store the tool in a dry place and inspect for wear or damage before each use.