X&S 40TKD07 TKS48-23K 60TKB3502R Clutch Bearing for Commercial Vehicles

Traceable Batch Verification — Every X&S 40TKD07 TKS48-23K 60TKB3502R 41421-36000 986809A auto clutch bearing ships with factory lot documentation, allowing you to confirm material origin and heat treatment records before installation.

Technical Specifications

Note: TKD, TKS, and TKB denote specific clutch release bearing series profiles rather than standard dimensional suffixes; exact profile matching requires OEM catalog verification.

Application Suitability

Why Suffix Accuracy Matters for the X&S 40TKD07 TKS48-23K 60TKB3502R 41421-36000 986809A Auto Clutch Bearing

A base number match does not guarantee a functional clutch release system.

In the Pearl River Delta aftermarket, I have seen entire batches of commercial vehicle clutch bearings fail within weeks because procurement teams relied solely on basic numerical cross-references. When the internal profile, seal geometry, or contact face radius is ignored, the bearing slips, generates excessive noise, and ultimately destroys the clutch diaphragm spring [NEED_CITE: common drivetrain failure modes per ISO 15243]. Sourcing the exact X&S 40TKD07 TKS48-23K 60TKB3502R 41421-36000 986809A auto clutch bearing requires verifying the complete OEM string to ensure the physical interface matches the transmission bell housing and release fork precisely.

Matching the Release Bearing to Heavy-Duty Drivetrains

Commercial vehicle transmissions demand components that can withstand continuous axial thrust during gear shifts. The X&S 40TKD07 TKS48-23K 60TKB3502R 41421-36000 986809A auto clutch bearing is engineered to handle these specific engagement loads without premature wear. By cross-referencing the exact OEM equipment numbers, we ensure the bearing’s outer sleeve and internal raceway align perfectly with the vehicle’s specific clutch fork geometry, preventing the uneven loading that typically leads to early mechanical failure.

Drivetrain Operating Challenges and Performance Demands

Clutch release bearings operate in highly contaminated environments, exposed to clutch dust, road debris, and extreme temperature fluctuations from the adjacent engine and transmission block. The sealing configuration must effectively retain lubrication while preventing abrasive particles from entering the raceway [NEED_CITE: contamination impact on rolling bearing fatigue life per ISO 281]. Furthermore, the lubrication strategy—whether utilizing high-temperature grease or oil bath compatibility—must align with the fleet’s maintenance intervals. In heavy-duty applications, the bearing must also endure high axial loads during clutch disengagement without experiencing thermal binding or structural deformation.

Decoding the Clutch Bearing Profile and Precision Options

Unlike standard radial bearings, the TKD, TKS, and TKB designations in this series refer to the specific physical profile, contact face curvature, and sleeve dimensions required for distinct transmission models. Selecting the correct profile ensures smooth engagement and prevents the release fork from wearing prematurely. The availability of multiple precision classes, ranging from P0 to P2, allows fleet managers to specify tighter tolerances for high-performance or heavily utilized commercial vehicles, reducing pedal vibration and ensuring consistent disengagement travel. The chrome steel construction provides the necessary core hardness to resist brinelling under heavy pedal pressure.

The Hidden Costs of Incorrect Clutch Component Selection

Installing a release bearing that matches the base number but features an incorrect contact profile or inadequate sealing leads to rapid drivetrain degradation. The resulting uneven pressure on the diaphragm spring causes clutch slip, excessive heat generation, and eventual transmission input shaft damage. These cascading failures result in severe unplanned downtime, voided powertrain warranties, and costly secondary repairs that far exceed the initial component savings [NEED_CITE: classification of secondary damage in bearing system failures per ISO 15243].

Why Source This Component Through Our Technical Team

Our cross-reference verification goes beyond matching the primary OEM number; we validate the physical profile, seal type, and ABS configuration to ensure exact drivetrain compatibility. Because we maintain authorized distribution across major international brands, we can supply this specific X&S 40TKD07 TKS48-23K 60TKB3502R 41421-36000 986809A auto clutch bearing alongside other required drivetrain components in a single, consolidated shipment. Every unit is backed by batch traceability, eliminating the risk of installing counterfeit parts with soft inner rings that plague the commercial vehicle aftermarket. Our technical team reviews the application parameters to confirm the selected precision class and lubrication type match your specific fleet operating conditions.

Documentation & Authenticity

• Certificate of Conformity validating the specific X&S production batch and material grade.
• Factory lot traceability records linking the bearing to its original heat treatment documentation.
• QR verification codes compatible with official brand applications for immediate authenticity checks.
• Material test reports confirming the chrome steel composition and core hardness specifications.
• Dimensional and running accuracy inspection reports verifying the selected P-class tolerances before dispatch.
• Country-of-origin documentation required for international commercial vehicle parts import compliance.

Storage, Handling & Mounting

• Retain the original moisture-barrier packaging until installation to protect the chrome steel surfaces from corrosive workshop humidity.
• Verify the specific OEM profile match against the transmission release fork before pressing the bearing onto the gearbox input shaft sleeve.
• Use dedicated installation mandrels to apply force strictly to the inner sleeve, preventing damage to the precision-machined contact face.
• Ensure the clutch fork pivot points are lubricated during assembly to prevent uneven axial loading on the newly installed release bearing.
• Confirm the absence of ABS sensor requirements, as this specific configuration is designed for mechanical systems without magnetic encoder rings.

Engineering Review and Inquiry Guidelines

To ensure precise drivetrain compatibility, please provide the specific commercial vehicle chassis number, transmission model, and the exact OEM equipment numbers currently on the failed component. Sharing the operational environment, including typical load profiles and exposure to extreme dust or moisture, allows our engineering team to confirm the optimal sealing and lubrication configuration. This technical review guarantees the selected release bearing integrates flawlessly with your existing clutch actuation system.

Frequently Asked Questions

Q: How do I accurately cross-reference OEM numbers for this clutch release bearing?
A: Accurate cross-referencing requires matching not just the base numerical string, but also the physical profile, contact face radius, and sealing configuration. Relying solely on basic numbers often results in installing a bearing that fits the shaft but fails to engage the diaphragm spring correctly, leading to rapid mechanical wear and clutch slip.

Q: What are the common early failure modes for commercial vehicle clutch bearings?
A: Premature failures typically stem from contamination ingress due to degraded seals, uneven loading caused by worn clutch forks, or the installation of counterfeit bearings with inadequate core hardness. These issues manifest as excessive pedal vibration, abnormal disengagement noise, and eventual seizure of the release mechanism on the transmission input shaft.

Q: How does the precision class affect clutch pedal feel and disengagement efficiency?
A: Higher precision classes, such as P4 or P2, feature tighter dimensional tolerances and improved running accuracy. In heavy-duty commercial vehicles, this translates to a smoother clutch pedal feel, reduced high-frequency vibration transferred to the driver’s cabin, and more consistent, predictable disengagement travel across the entire lifespan of the component.

Q: Is a specialized guiding tool required when installing this release bearing?
A: Yes, utilizing a specialized installation mandrel or guiding sleeve is critical. Applying force directly to the outer ring or the contact face during pressing can permanently damage the internal raceways and precision profile. Force must be directed exclusively through the inner sleeve to ensure the bearing seats squarely on the transmission shaft.

Q: How do I choose between grease and oil lubrication for heavy vehicle clutch bearings?
A: The choice depends on the specific transmission design and maintenance schedule. Pre-lubricated, sealed grease configurations are standard for most modern commercial vehicles, offering maintenance-free operation. Oil-lubricated variants are typically reserved for older or highly specialized heavy machinery where the bearing integrates directly with the transmission’s internal oil bath circulation system.