Product Overview

The document details specifications for the BJ131 series hook clamps, precision ground and heat treated with a black oxide finish. The clamps are made from SCM435 steel, ensuring durability and strength.

Material and Finish

• Material: Steel (SCM435)
• Surface Treatment: Heat treated and black oxide finish for corrosion resistance and enhanced durability
• Precision ground for accurate fitting

Component Details

• Body: Main clamp body
• Cap Screw: M1 Hex Socket-Head Cap Screw used for fastening
• Note: The center of radius R1 is positioned 5mm outside the center of the body

Dimensions and Part Numbers

The clamps come in various sizes with corresponding part numbers and dimensions. Key parameters include:

• Clamping Range (R)
• Widths (W, W1, W2)
• Heights (H1, H3)
• Radius (R1)
• Screw specifications (M size and thread length)

Examples of part numbers and dimensions:

Performance Parameters

• Clamping Force ranges from approximately 6,700 N to 13,500 N depending on model
• Allowable screw torque varies by screw size, e.g., 10 N·m for M8 screws, 20 N·m for M16 screws
• Weight varies by model, generally between 160 g and 830 g

Additional Features

• Riser cylinders (BJ600 series) are available to provide additional height if required

Usage Notes

The document includes a "HOW TO USE" section (details not fully provided) indicating instructions for proper installation and operation of the hook clamps.

Summary

This technical document provides comprehensive specifications for the BJ131 hook clamps, including material properties, dimensions, part numbers, clamping forces, allowable screw torques, and weights. The clamps are designed for precision and durability, with options for customization via riser cylinders. Proper selection of clamp size and screw torque is critical for safe and effective use.