Guide Bushing Technical Specifications and Components

1. Guide Bushing Dimensions and Tolerances

The document provides detailed dimensional specifications for guide bushings, including inner diameter (φd), outer diameter (φD), and related tolerances. Key tolerances include:

• Inner diameter (φd) tolerance: D8
• Outer diameter (φD) tolerance: m6 or g6 depending on the part
• Length (L and La) and chamfer details (2-R3, 15°) are specified for precise fitting.

Examples of diameter tolerances for outer diameter φD include:

• For 80 mm diameter: +0.030 to +0.011 mm upper limit, -0.010 to -0.029 mm lower limit
• For 100 mm diameter: +0.035 to +0.013 mm upper limit, -0.012 to -0.034 mm lower limit

Recommended tolerance for drilled holes is H7 to ensure proper fit.

2. Materials and Surface Treatments

• Guide bushings are made from bronze with graphite (SO#50 SP2) to provide sliding properties.
• Lock plates for guide bushings are made from S45C steel (equivalent to C45 or A1045) with black oxide surface treatment for corrosion resistance and durability.

3. Guide Bushing Types and Variants

• Straight Type (RGBD): Standard guide bushings with specified tolerances and dimensions.
• Flange Type (RGBTD): Guide bushings with flange for additional mounting support.

4. Locking Mechanisms

Two types of loosening lock plates are described to secure guide bushings:

• For Straight Type (GBSP): Lock plates with dimensions A, B, Da, and outer diameter D specified for various catalog numbers and sizes.
• For Flange Type (SNG): Lock plates with detailed dimensions (A, B, d1, C, E, F, G, M, S, Sa) and thread sizes (M8, M10) to fit flange bushings securely.

5. Ordering Information

Catalog numbers are provided for different sizes and types of guide bushings and lock plates, facilitating correct part selection based on diameter and length requirements.

6. Design Features

• Chamfering (2-R3, 15°) on edges to ease assembly and reduce stress concentration.
• Precise dimensional control to ensure smooth sliding and proper alignment in die applications.

Summary

This document outlines the critical specifications for guide bushings used in die applications, emphasizing precise dimensional tolerances, material selection for durability and sliding performance, and secure locking mechanisms. It provides comprehensive data for selecting and ordering appropriate components to ensure reliable operation and longevity.