Guide Skid & Bush with Collar Hole

High-Performance Sliding Components in CuSn12Ni1.5 Nickel-Tin Bronze

Industrial sliding systems demand stable performance under high load, low speed, and limited lubrication conditions. The Guide Skid and Bush with Collar Hole series, manufactured from CuSn12Ni1.5 high-tin nickel bronze, delivers exceptional wear resistance, structural stability, and long service life for demanding engineering applications. Our precision components are engineered to strict standards (IS:2102 Part-1 1980) with controlled surface finishes for optimal tribological performance.

1. Material Overview: CuSn12Ni1.5 Nickel Tin Bronze

CuSn12Ni1.5 is a high-performance bronze alloy designed for heavy-load tribological applications. [Drawing reference: Material specified as GCusn12N11.5, conforming fully to CuSn12Ni1.5 engineering standards].

Key Material Characteristics:

• High tin content enhances hardness and wear resistance

• Nickel improves structural stability and load-bearing capacity

• Excellent anti-seizure and anti-galling properties

• Suitable for boundary lubrication or intermittent lubrication systems

• High compressive strength for sliding and impact conditions

Engineering Position:
CuSn12Ni1.5 is widely used in heavy machinery sliding components, guide systems in steel plants, structural wear pads, and industrial automation guide assemblies.

2. Product Structure Overview

2.1 Guide Skid (Sliding Guide Block)

The Guide Skid is designed as a precision sliding interface component used in linear or guided motion systems.

Functional Features:

• Flat or contoured sliding surface with optimized contact geometry

• Multiple mounting holes for secure installation

• Load distribution across wear surface for reduced friction under heavy compressive load

2.2 Bush with Collar Hole (Flanged Bushing) – Drawing Specifics

This self-aligning structural bearing component is engineered for precise radial and axial positioning.

Critical Engineering Specifications (Extracted from Drawing No. 5-002):

• Outer Diameter (OD): Ø140.00 -0.03 mm (Precision ground fit for press or interference mounting)

• Inner Diameter (ID): Ø100.00 mm (Machined to accommodate shafts/guide pins)

• Overall Length: 200.00 mm (Extended cylindrical surface for stable load support)

• Collar (Flange) Thickness: 4.00 mm (Provides robust axial positioning)

• Mounting Holes: 2 Holes of Ø10.50 mm THRU, located on a PCD (Pitch Circle Diameter) of Ø170.00 mm

• Step/Shoulder Dimensions: Precision steps at 14.50 mm, 25.50 mm, 38.00 mm, and 52.50 mm for multi-diameter assembly requirements

Design & Finishing Features:

• Edge Condition: Unspecified corners machined with a 0.50 x 45° chamfer to eliminate stress risers

• Surface Roughness (Ra): Key sliding surfaces finished to Ra 3.2 μm (precision turning/grinding); secondary surfaces to Ra 6.3 μm

• Tolerance System: Adheres to IS:2102 (Part-1) 1980 – Medium Class (Equivalent to ISO 2768-m), ensuring interchangeability

• Manufacturing Process: Precision CNC machined after casting for strict dimensional stability

3. Performance Advantages

3.1 Superior Wear Resistance
CuSn12Ni1.5 provides significantly improved wear resistance compared to conventional bronze grades (e.g., CuSn8 or C93200), especially under low-speed oscillating motion, high-load sliding contact, and intermittent lubrication conditions.

3.2 High Load-Bearing Capability
The nickel-enriched alloy structure ensures high compressive strength, stable deformation resistance under peak loads (tested per ISO standards), and reduced material fatigue over long operational cycles.

3.3 Anti-Seizure Performance
Nickel-enhanced bronze improves resistance to adhesive wear, drastically reduces the risk of surface galling, and maintains stable performance even when lubrication is marginal or interrupted.

4. Engineering Application Scenarios

The Guide Skid and Bush with Collar Hole in CuSn12Ni1.5 are precision components engineered for extreme industrial environments, including:

• Steel continuous casting equipment (high-heat expansion systems)

• Cement kiln and furnace sliding structures (thermal growth management)

• Heavy industrial conveyor guide rails (abrasive conditions)

• Mining and excavation machinery pivot joints (shock loading)

• Energy and power plant expansion systems (maintenance-free intervals)

5. Design & Manufacturing Features

Our components are built with rigorous engineering controls to ensure drop-in replacement and long-term reliability:

• Precision CNC Machining: Post-cast machining guarantees tight concentricity and perpendicularity of the collar to the bore.

• Controlled Sliding Fit: Dimensional deviations follow Medium Class tolerances (0.5-6.0mm: ±0.100; 6-30mm: ±0.200; 30-120mm: ±0.300; 120-315mm: ±0.400; up to 1000mm: ±0.800).

• Stress-Relief Design: Chamfered edges (0.5×45°) and generous fillets reduce stress concentration points.

• Surface Optimization: Finishing at Ra 3.2 μm ensures optimal oil/grease retention while minimizing friction.

• Versatile Lubrication: Compatible with grease, oil mist, or dry-running boundary conditions.

6. Why CuSn12Ni1.5 for Sliding Components?

Compared with standard bronzes such as CuSn8 or C93200, CuSn12Ni1.5 provides:

7. Summary

The Guide Skid and Bush with Collar Hole system in CuSn12Ni1.5 bronze represents a robust engineering solution for high-load sliding applications. By combining structural rigidity with advanced tribological performance, this series is ideal for industrial systems where reliability, wear resistance, and dimensional stability (held to strict IS:2102 Medium Class tolerances) are critical. Whether used in steel plants, heavy conveyors, or energy equipment, these components deliver reduced downtime and extended equipment life.

Contact us today for custom sizes or to request the full dimensional report (Drawing No. 5-002).
Components available in as-cast or fully machined conditions with certification.