The WG2229260017 Bottom Pull Fork Shaft is a core component of the bottom-pull clutch release system in heavy-duty truck transmissions.
It is responsible for accurately transmitting clutch pulling force and controlling the movement of the release fork. Designed to solve interference issues found in top-pull structures, it ensures stable clutch operation, smooth shifting performance, and reliable power disengagement.
This part is widely used in heavy-duty trucks, engineering vehicles, and dump trucks operating under high-load and high-vibration conditions.
Core Function
- Transmits clutch pedal force to the release fork
- Controls clutch engagement and disengagement precisely
- Ensures smooth shifting without gear grinding
- Eliminates structural interference in bottom-pull layout systems
Product Advantages
● High-Strength Alloy Steel Construction
Manufactured from 42CrMo alloy structural steel forging, the shaft features:
- High strength and excellent toughness
- Strong wear and fatigue resistance
- Stable performance under heavy-duty impact loads
After quenching + high-temperature tempering (quenching & tempering process):
- Internal stress is eliminated
- Improved fatigue resistance
- No bending or fracture under long-term load
● High Surface Hardness & Wear Resistance
Through high-frequency surface quenching, the shaft achieves:
- Hardness: HRC 58–62
- Excellent surface wear resistance
- Strong resistance to clutch friction and oil immersion
It ensures long service life under frequent clutch operation.
● Precision Machined for Smooth Operation
The shaft is fully CNC machined and precision ground:
- Tight tolerance control for all mating surfaces
- Smooth sliding with bushings and bearings
- No sticking, no abnormal noise
This improves clutch responsiveness and driving comfort.
● Bottom-Pull Dedicated Structural Design
Specially optimized for bottom-pull clutch systems:
- Avoids interference with upper pipes and brackets
- Perfect fit for compact vehicle layouts
- Easy installation and maintenance access
It solves structural limitations of traditional top-pull systems.
● Anti-Fatigue & Anti-Deformation Design
Key stress zones are optimized to:
- Prevent fatigue cracking under vibration
- Increase bending resistance by up to 30%
- Maintain long-term dimensional stability
● Anti-Leakage & Anti-Loosening Structure
Equipped with precise installation grooves for:
- Retaining rings
- Oil seals
- Stable shaft positioning
This effectively prevents shaft movement and oil leakage.
● One-Piece Forged Body
- No welding or joints
- Dense and uniform material structure
- High resistance to impact and fracture
Ensures long-term durability in harsh environments.
Technical Features
- Material: 42CrMo alloy steel
- Heat treatment: Quenching + high-temperature tempering
- Surface treatment: High-frequency induction hardening
- Hardness: HRC 58–62
- Structure: One-piece forged bottom-pull design
- Precision CNC machining + grinding finish
- Anti-fatigue optimized structure
Application Scope
- Heavy-duty truck clutch systems
- Bottom-pull clutch release mechanisms
- Dump trucks and construction vehicles
- Long-distance logistics trucks
- OEM gearbox assembly and repair
Performance Benefits
- Smooth and precise clutch engagement
- Reduced shifting effort for drivers
- Improved transmission efficiency
- Eliminates clutch interference issues
- Enhanced durability under heavy load and vibration
Supply & Service
- Ready stock for fast delivery
- OEM customization available
- Stable quality for long-term supply
- Professional technical support provided