Overview

This document provides technical specifications and operational guidelines for RoHS-compliant guide bushings made from copper powder sintered metal sliding materials, specifically the HGB and HGBF series.

Material Specifications

• Material: Copper powder sintered (SO#200H).
• Physical Properties: Specific gravity ranges from 5.8 to 6.3 g/cm³; hardness is approximately 80 HRM; linear expansion coefficient is between 1.7 and 1.9 ×10⁻⁵/°C.

Dimensional and Tolerance Details

• Hole diameter tolerance: H7 with chamfering required.
• Shaft tolerance: m6.
• Guide bushings have detailed dimensions including diameter (d), length (L), and chamfer radius (R) with specific tolerances (e.g., i0.020, i0.007).
• Mating post tolerance is f6.
• Sliding direction is indicated for installation.

Operational Parameters

• Maximum Allowable Load (P): 13 N/mm² without lubrication.
• Maximum Sliding Speed (V): 20 m/min.
• Maximum PV Value: 45 N/mm²·m/min.
• Operating Temperature Range: Up to 400°C.
• Suitable for use in atmospheric conditions without lubrication.

Performance Characteristics

• Good performance under medium and low loads at medium speeds.
• Excellent wear resistance at high temperatures.
• Oilless operation capability due to copper powder sintered material.

Ordering Information

• Catalog numbers are provided for various sizes of HGB and HGBF bushings, with detailed dimensional data for each size.
• Dimensions include diameter (d), length (L), and other critical measurements with precise tolerances.

Recommendations and Best Practices

• Chamfering of holes is mandatory to ensure proper fit and function.
• Ensure correct orientation according to sliding direction markings.
• Use within specified load, speed, and temperature limits to maximize bushing life and performance.

Summary

The guide bushings described are designed for reliable, maintenance-free sliding applications in environments requiring RoHS compliance. Their copper powder sintered construction offers durability, high-temperature wear resistance, and suitability for oilless operation under specified mechanical and environmental conditions.