The WG2229040048 Main Shaft Gear Spacer is a precision transmission component designed for heavy-duty truck gearboxes.
It is installed between main shaft gears to provide axial positioning, clearance control, and load distribution. It plays a critical role in ensuring accurate transmission alignment, stable operation, and long service life of the gearbox system.
This component is widely used in gearbox assembly, maintenance, and OEM replacement for heavy-duty commercial vehicles.
Key Function
- Provides axial positioning between main shaft gears
- Controls gear clearance and assembly tolerance
- Ensures even load distribution across gear system
- Improves transmission accuracy and stability
Product Advantages
● High-Strength Material Construction
Manufactured from 65Mn spring steel or 40Cr alloy structural steel, the spacer offers:
- High strength and excellent toughness
- Strong fatigue and impact resistance
- Stable performance under heavy load conditions
After quenching and tempering heat treatment, it ensures:
- No deformation under long-term stress
- No cracking under heavy-duty operation
● Excellent Anti-Corrosion Performance
The surface adopts blackening + phosphating composite treatment, providing:
- Strong resistance to oil and corrosion
- Excellent high-temperature stability (80–120°C)
- Long-lasting protection in harsh gearbox environments
It is suitable for high-frequency vibration and lubricated working conditions.
● Precision Manufacturing Process
The spacer is produced using high-precision forming technology:
- Precision stamping / machining process
- Burr-free smooth surface finish
- No deformation or structural distortion
This ensures high dimensional accuracy and reliable installation performance.
● High Flatness & Stable Fitment
Both sides are precision ground for:
- High surface flatness
- Perfect contact with gear end faces
- Stable axial positioning
It effectively reduces vibration, noise, and gear misalignment.
● Anti-Loosening Design with Spline Inner Ring
The internal spline structure provides:
- Secure engagement with main shaft spline
- Prevents rotational displacement
- Ensures stable positioning under vibration
This significantly improves operational reliability.
● High Rigidity Thin Plate Structure
The optimized design features:
- High load-bearing capacity despite thin profile
- Uniform stress distribution
- Reduced risk of stress concentration
It helps extend the service life of gears and bearings.
● Safe Installation & Compatibility
All edges and spline areas are finely polished:
- Burr-free surface
- No damage to mating components during installation
- High compatibility with tight gearbox spaces
Technical Features
- Material: 65Mn spring steel / 40Cr alloy steel
- Heat treatment: Quenching + tempering
- Surface treatment: Blackening + phosphating
- Structure: Precision thin spacer with spline inner ring
- High flatness and dimensional accuracy
- Burr-free precision finishing
Application Scope
- Heavy-duty truck transmissions
- Main shaft gear assembly systems
- Gear spacing and positioning systems
- Commercial vehicle driveline systems
- OEM production and gearbox repair
Performance Benefits
- Precise gear positioning and spacing control
- Reduced vibration and abnormal noise
- Improved transmission stability
- Extended gear and bearing service life
- Prevents axial gear movement and failure
Supply & Service
- Ready stock for fast delivery
- OEM customization available
- Stable quality for long-term supply
- Professional technical support provided