The WG9003397145 Input Shaft Front Thrust Roller Bearing is a key heavy-duty transmission component designed for axial load support in truck gearboxes.

It is installed at the front end of the input shaft and is responsible for absorbing strong axial thrust, maintaining precise shaft positioning, and ensuring stable gearbox operation. It plays a critical role in preventing gear grinding, abnormal noise, and premature bearing failure.

Key Function

• Supports high axial thrust load on input shaft
• Maintains precise axial positioning and clearance control
• Reduces friction, vibration, and abnormal noise
• Prevents gear misalignment, jumping, and gear grinding

Product Advantages

● Ultra-High Axial Load Capacity

Designed with a cylindrical roller thrust structure, this bearing offers:

• Much higher load capacity than standard ball bearings
• Excellent resistance to heavy axial impact
• No collapse, deformation, or slippage under load

It is ideal for heavy-duty conditions such as starting, climbing, and full-load transport.

● High-Strength GCr15 Bearing Steel

Manufactured from high-purity GCr15 bearing steel, the product features:

• Dense and uniform microstructure
• Excellent wear and fatigue resistance
• High resistance to pitting and spalling

After precision heat treatment:

• Quenching + low-temperature tempering
• Improved hardness and durability balance
• Long service life under extreme conditions

● Precision Roller Thrust Structure

The bearing consists of:

• Shaft washer
• Housing washer
• Cylindrical rollers
• Precision cage

Features:

• Line-contact load distribution
• Extremely strong axial load capacity
• Stable roller guidance without slipping or jamming
• Uniform stress distribution for longer life

● Ultra-Precision Machined Raceways

• Mirror-level raceway finishing
• Low friction and smooth rotation
• Reduced heat generation during operation
• Stable high-speed performance with low noise

This ensures smooth gearbox operation without vibration or abnormal sound.

● High Temperature & Oil Resistance

Designed for harsh gearbox environments:

• Stable operation in gear oil lubrication system
• High temperature resistance under continuous load
• Corrosion-resistant and anti-wear performance

It prevents overheating, seizure, and early failure.

● Anti-Fatigue & Long Service Life

• High resistance to cyclic stress and impact load
• No early spalling or surface damage
• Long service life under heavy-duty operation

It significantly reduces maintenance frequency and downtime.

Technical Features

• Material: GCr15 high-carbon chromium bearing steel
• Heat treatment: Quenching + low-temperature tempering
• Structure: Cylindrical roller thrust bearing
• Load type: High axial load capacity
• Raceway finish: Ultra-precision grinding (mirror finish)
• High temperature resistance: Suitable for oil bath lubrication systems
• Low noise and low vibration design

Application Scope

• Heavy-duty truck transmissions
• Input shaft support systems
• Gearbox axial load control systems
• Commercial vehicle driveline systems
• OEM assembly and gearbox repair

Performance Benefits

• Extremely high axial load capacity
• Stable shaft positioning and alignment
• Reduced gear noise and vibration
• Improved transmission smoothness
• Prevents gear grinding and jumping issues
• Long service life under heavy load conditions

Supply & Service

• Ready stock available for fast delivery
• OEM customization supported
• Stable quality for long-term supply
• Professional technical support provided