The WG2229040025 Bore Type Flat Steel Wire Retaining Ring is a specialized elastic positioning component designed for heavy-duty truck transmissions.
It is installed in the internal groove of housing bores to provide axial retention, anti-loosening fixation, and vibration damping for bearings, gears, and shaft components. It is a fundamental part that ensures stable and reliable operation of the transmission system under continuous heavy load conditions.

Key Function
- Provides axial retention for bearings and gears inside housing bores
- Prevents axial movement and component loosening
- Reduces vibration and operational noise
- Ensures stable and smooth transmission performance
Product Advantages
● High-Strength 65Mn Spring Steel Material
Manufactured from premium 65Mn spring steel, the product features:
- Tensile strength ≥ 1200 MPa
- Hardness: HRC 44–51 (HV 435–530)
- Excellent toughness and fatigue resistance
- Strong impact resistance under heavy load
It maintains stable elasticity even under long-term high-frequency operation.
● Precision Manufacturing Process
The retaining ring is produced through advanced forming technology:
- Flat wire pressing
- Precision winding
- Equal-section forming
- Heat treatment (quenching + tempering)
The result is a uniform structure with no burrs, ensuring no damage to mating components.
● Anti-Corrosion Surface Treatment
The surface is treated with blackening or phosphating, providing:
- Strong resistance to oil and corrosion
- Durable protective film
- Reliable performance in high-temperature and lubricated environments
It is ideal for long-term use in harsh gearbox conditions.
● Equal-Section Non-Ear Design
Unlike traditional retaining rings, this product features a non-ear equal-section structure, offering:
- Uniform stress distribution without concentration points
- Higher resistance to fracture
- No installation interference in compact spaces
It ensures safer and more reliable assembly performance.
● Continuous Elastic Contact Design
The full-ring elastic structure provides:
- 360° stable contact with housing and components
- Effective axial movement restriction
- Reduced vibration and abnormal noise
It significantly improves transmission stability.
● Long-Lasting Elastic Stability
After heat treatment, the ring maintains:
- Stable elasticity modulus
- Resistance to permanent deformation
- No loosening or failure over long-term use
It is suitable for heavy-duty and high-frequency working conditions.
Technical Features
- Material: 65Mn spring steel
- Strength: ≥1200 MPa tensile strength
- Hardness: HRC 44–51 (HV 435–530)
- Heat treatment: Quenching + tempering
- Surface treatment: Blackening / phosphating
- Structure: Equal-section non-ear design
Application Scope
- Heavy-duty truck transmissions
- Gearbox housing bore retention systems
- Bearing and gear axial positioning
- Commercial vehicle driveline systems
- OEM assembly and aftermarket replacement
Performance Benefits
- Reliable axial retention and positioning
- Strong anti-vibration and anti-loosening performance
- Reduced wear and noise
- Long service life under heavy load
- Stable performance in harsh environments
Supply & Service
- Ready stock for fast delivery
- OEM customization supported
- Stable quality for long-term supply
- Professional technical support provided

