Fuwa locking gasket

Fuwa Camshaft Gasket: Specifications, Functions, Materials, and Applications

Key Specifications

• Thickness: Typically4mm ± 0.03mm(precision-machined for tight axial tolerances).

• Outer Diameter (OD):φ172mm(standard for thin-walled ring-type gaskets).

• Inner Diameter (ID):φ90mm(process-oriented ID for clamping during manufacturing).

• Parallelism:≤0.02mm(critical for flat-surface alignment and sealing integrity).

• Tolerances:

• Thickness:4mm ± 0.03mm(copper variants sensitive to thermal expansion).

• Groove depth:5mm ± 0.1mm(ensures proper lubrication channel dimensions).

Functional Roles

1. Axial Restraint & Positioning

• Prevents axial displacement of the camshaft, maintaining precise valve timing and engine efficiency.

• Critical in Fuwa trailer brake systems to sustain braking performance under load.

2. Sealing & Leak Mitigation

• Fills microscopic gaps between mating surfaces (cylinder head/block) to prevent combustion gas leaks and coolant/oil seepage.

3. Vibration Damping

• Absorbs mechanical vibrations, reducing noise and extending component lifespan.

4. Lubrication Distribution

• Features eccentric annular oil grooves (offset by 4mm) and radial slots to ensure uniform oil flow, minimizing friction and wear.

Material Composition

1. Copper Alloy

• Preferred for thermal conductivity and wear resistance in thin-walled designs.

• Requires precise machining to avoid deformation under load.

2. Quenched Alloy Steel

• Used in high-load applications (e.g., heavy-duty trucks) for enhanced hardness and fatigue resistance.

3. Composite Materials

• PTFE/graphite-based variants for self-lubricating properties in extreme temperatures or lubricant-starved environments.

Technical Parameters

• Surface Finish: ≤Ra 1.6μm (reduces friction and improves sealing).

• Hardness: HRC 40–45 (quenched steel variants).

• Operating Temperature Range: -40°C to +150°C (copper) / -30°C to +200°C (steel/composites).

Vehicle & Industrial Applications

1. Fuwa Trailer Brake Systems

• Ensures axial stability of camshafts in brake actuators, preventing misalignment and performance degradation.

2. Heavy-Duty Truck Engines

• Compatible with Fuwa 470/510/330 rear brake assemblies, maintaining valve timing accuracy under high RPM.

3. Industrial Machinery

• Used in high-torque engines and gearboxes requiring robust axial restraint and wear resistance.

Quality Assurance

• ISO 9001:2015 Certified Manufacturing

• 100% Dimensional Inspection(via CMM/optical measurement)

• Fatigue Testing(simulates 1 million+ cycles under load)

Key Considerations for Users

1. Model-Specific Fitment: Verify compatibility with Fuwa’s official part catalog (e.g., AZ4007443020 for right-side applications).

2. Installation Guidelines:

• Avoid over-tightening (recommended torque: 25–30 N·m for copper gaskets).

• Use thread-locking compounds sparingly to prevent gasket distortion.

3. Maintenance: Inspect for wear/corrosion every 50,000 km; replace if parallelism exceeds 0.03mm.