Clutch Release Bearing 81TKL4801R,TKS70-48K,1313100120 For ISUZU

The 81TKL4801R/TKS70-48K/1313100120 clutch release bearing is designed for ISUZU heavy trucks and engineering vehicles. It is suitable for mainstream models such as ISUZU FORWARD F series (such as N65.150 4JJ1-TC engine, N75-190 4HK1-TC engine), N series (such as NQR 70 4HE1-TC engine) and Qingling 700P. The bearing is made of high-precision chrome steel, with an inner diameter of 48mm, an outer diameter of 120mm, and a width of 60mm. It complies with ISO9001 and TS16949 international quality certification standards, with a tolerance grade of P0/P6 and radial clearance control of C3/C0 standards, ensuring low friction and low noise operation under high-speed rotation (maximum speed up to 8000rpm) and high-load conditions (rated dynamic load ≥35kN). Its sealing structure adopts a double-lip skeleton oil seal design, which can effectively block dust and grease leakage, extend the service life to 50,000 kilometers or 12 months (whichever comes first), and significantly reduce the maintenance frequency.

The bearing achieves uniform axial load distribution and reduces edge stress concentration by optimizing the raceway curvature radius (R=12.5mm) and roller cone angle (α=15°), which improves fatigue resistance by 30% compared with traditional designs. Its core components adopt the Japanese NSK/NTN homologous heat treatment process, with a surface hardness of HRC60-64, and are combined with low-temperature grease (operating temperature range -40℃ to +150℃) to ensure that stable separation force can be maintained under extreme climatic conditions (separation stroke error ≤0.1mm). In addition, the matching clearance between the bearing and the release fork is strictly controlled within the range of 0.3-0.5mm. Through the dynamic balance test (G2.5 level), it can effectively suppress the transmission of vibration to the clutch assembly and reduce the wear rate of the pressure plate. A 100% full inspection process is adopted during the production process, including ultrasonic testing (to detect internal defects), dynamic simulation testing (simulating 100,000 clutch disengagement and engagement cycles) and salt spray testing (480 hours of rust-free), to ensure that the product factory qualification rate is ≥ 99.97%, providing a reliable original equipment replacement solution for ISUZU models.