The WG2229040030 Spacer Sleeve is a precision positioning component designed for heavy-duty truck transmissions.
It is used to maintain accurate spacing between bearings and gears, ensuring correct axial positioning and even load distribution. As a fundamental part of the gearbox system, it plays a key role in maintaining transmission accuracy, stability, and long service life under heavy-duty operating conditions.
Key Function
- Maintains precise spacing between gears and bearings
- Provides stable axial positioning within the transmission system
- Ensures uniform load distribution
- Reduces vibration, wear, and abnormal noise
Product Advantages
● High-Strength 40Cr Alloy Steel Material
Manufactured from 40Cr alloy structural steel forging, the spacer features:
- High strength and excellent toughness
- Strong impact and fatigue resistance
- Stable performance under heavy load conditions
After quenching and tempering heat treatment, the product achieves:
- Hardness: HRC 48–55
- Tensile strength ≥ 980 MPa
- Yield strength ≥ 785 MPa
It remains stable without deformation or cracking under long-term heavy-duty operation.
● Excellent Wear & Corrosion Resistance
The surface adopts blackening + phosphating composite anti-corrosion treatment, providing:
- Strong resistance to oil and corrosion
- Excellent heat resistance (80–120°C working environment)
- Long-term protection against rust and scaling
It is fully suitable for harsh internal gearbox environments with high temperature and lubrication.
● Precision One-Piece Forged Structure
The spacer is formed through seamless steel forging technology, ensuring:
- No welding seams or structural weak points
- Dense and uniform material structure
- High overall mechanical strength
This eliminates risks of cracking or deformation caused by welded structures.
● High Precision Machining for Stable Fitment
Through precision turning and grinding processes, the product ensures:
- Extremely high concentricity between inner and outer diameters
- Smooth and flat end surfaces
- Perfect contact with bearing and gear surfaces
This guarantees stable axial positioning and reduces vibration and noise.
● Optimized Load Distribution Design
The high-rigidity structure provides:
- Even axial load distribution
- Reduced stress concentration
- Lower risk of bearing burn and gear pitting
It significantly improves the service life of related transmission components.
● Compact Structure for Easy Installation
Designed with moderate thickness and compact size, it:
- Fits limited gearbox internal space
- Does not interfere with lubrication or assembly
- Ensures easy installation and compatibility
Technical Features
- Material: 40Cr alloy structural steel
- Heat treatment: Quenching + tempering
- Hardness: HRC 48–55
- Tensile strength: ≥980 MPa
- Yield strength: ≥785 MPa
- Surface treatment: Blackening + phosphating
- Structure: One-piece seamless forging
Application Scope
- Heavy-duty truck transmissions
- Gear and bearing spacing systems
- Drivetrain assembly and maintenance
- Commercial vehicle gearbox systems
- OEM production and aftermarket replacement
Performance Benefits
- Precise gear and bearing spacing control
- Improved transmission stability and accuracy
- Reduced wear and mechanical failure risk
- Enhanced load distribution performance
- Extended gearbox service life
Supply & Service
- Sufficient stock for fast delivery
- OEM customization available
- Stable quality for long-term cooperation
- Professional technical support provided