68TKB3506AR High-Performance Clutch Release Bearing Assembly

This clutch release bearing assembly is engineered for demanding industrial applications with its 45° contact angle aligning design. Manufactured from GCr15 bearing steel, it ensures reliable performance in crushers, rolling mills, and heavy machinery.

Technical Highlights

• Precision Engineering
  P5 precision grade with C3 clearance provides <strong>0.002mm radial runout tolerance for vibration-sensitive equipment.

• Robust Construction
  Double-sealed (2RS) design with brass cage withstands 7.5kN dynamic radial loads at 3,000 RPM.

• Interchangeability
  Cross-references with 70CL6081FOB, S3123-01200A5, and 3151000157 models.

Dimensional Specifications

The clutch release bearing is installed between the clutch and the transmission. Specifically, the release bearing seat is loosely sheathed on the tubular extension of the bearing cover (attached to the first shaft of the transmission). Additionally, a return spring ensures that the shoulder of the release bearing remains firmly pressed against the release fork, allowing it to retract to its final position. As a result, a clearance of approximately 3–4mm is maintained between the bearing and the release lever (release finger), ensuring smooth operation and preventing unnecessary friction.

OEM & Part Number

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This release bearing assembly features a P5 precision grade and C3 internal clearance, which maintain a radial runout tolerance of less than 0.002mm. This exceptional precision minimizes vibration and ensures smooth operation. Furthermore, its robust construction includes a double-sealed (2RS) design and a brass cage, enabling it to handle dynamic radial loads up to 7.5kN at speeds of 3,000 RPM. This combination of precision and strength guarantees reliable performance under the most strenuous conditions.

Correct installation ensures the release bearing assembly functions as intended. Technicians mount it between the clutch and the transmission, loosely sheathing its seat on the tubular extension of the bearing cover. A return spring keeps the bearing’s shoulder pressed against the release fork, ensuring full retraction after disengagement. This crucial setup maintains a 3–4mm clearance between the bearing and the release lever fingers, which prevents drag and unnecessary wear for smooth operation and long service life.

The part number 68TKB3506AR identifies this specific release bearing assembly, and it is interchangeable with a wide range of OEM and aftermarket numbers from major brands like TOYOTA, AISIN, SKF, and VALEO. This versatility makes the component highly accessible for global supply chains. We securely package the assembly in plastic tubes, rolls, or individual boxes on wooden pallets, committing to quality and performance backed by comprehensive technical specifications.

Why Choose Our High-Performance Release Bearing Assembly (68TKB3506AR) for Industrial & Automotive Use?

Engineered for the most demanding applications, our release bearing assembly represents the pinnacle of precision manufacturing and robust design. Built for industrial machinery and high-performance automotive use, the 68TKB3506AR model delivers unmatched reliability where failure is not an option. Here’s why engineers and maintenance professionals specify this assembly:

Precision Engineering for Critical Applications: Manufactured to a P5 precision grade with C3 internal clearance, this release bearing assembly guarantees a radial runout tolerance of less than 0.002mm. This exceptional precision is essential for vibration-sensitive equipment like crushers, rolling mills, and high-RPM machinery, ensuring smooth operation and protecting downstream components.

Superior Load Capacity & Durability: Constructed from high-grade GCr15 chrome steel and featuring a robust brass cage, this release bearing assembly is built to withstand extreme conditions. It is rated for dynamic radial loads up to 7.5 kN at operating speeds of 3,000 RPM, providing reliable performance under constant heavy stress and high rotational forces.

Advanced Sealing & Protection: The double-sealed (2RS) design offers superior defense against contaminants like dust, moisture, and metallic debris common in industrial environments. This advanced sealing technology ensures excellent grease retention, significantly extending the service life and maintenance intervals of the release bearing assembly.

Unmatched Interchangeability & OEM Quality: This unit is a direct cross-reference for over 20 major OEM and aftermarket part numbers, including SKF VKC3615, VALEO 804190, and TOYOTA 31230-35070. Its exacting specifications ensure perfect compatibility and performance, making it a universal replacement solution for a vast range of industrial and automotive platforms.

Optimized 45° Contact Angle Design: The specialized 45° contact angle is engineered for optimal alignment with clutch release levers (fingers). This design minimizes axial deflection, distributes load more evenly, and reduces wear on both the bearing and the clutch system, leading to smoother engagement and longer overall component life.

Installation Guidelines

1. 1. Pre-Installation Check
      Verify shaft runout (<0.01mm) and housing bore finish (Ra 1.6μm max).

   2. Mounting Procedure

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      1. Heat housing to 80-100°C
      2. Apply EP2 lithium grease to shaft
      3. Press-fit bearing using arbor press (max 5kN force)

   3. Post-Installation
      Run-in at 50% rated speed for 30 minutes before full load operation.

FAQ

Q: What’s the lifespan of this bearing in crusher applications?
A: Typical service life:

• 8,000-10,000 hours in standard conditions

• 5,000+ hours under heavy shock loads (with proper lubrication)

Q: How does the 45° contact angle improve performance?
A: Compared to standard bearings:

• 25% higher moment load capacity

• Better misalignment compensation (±0.5°)

• Reduced edge stress at high speeds

Q: Can this replace non-aligning release bearings?
A: Yes, but requires:

• Checking housing self-aligning capability

• Verifying axial play (0.1-0.3mm recommended)

• Using adapter sleeves if shaft tolerance differs

CTA

🏭 Need Bulk Quantities for Your Production Line?
✅ In-Stock: 500+ Units Ready for Immediate Dispatch
✅ Custom Packaging Available (Wooden Cases/Pallets)
✅ OEM Equivalent Quality at Competitive Pricing

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