Product Introduction C5612728 6305-2RST7 Flywheel Bearing is a sealed pilot bearing installed within the flywheel of ISZ14 power unit. It centers the gearbox input shaft and maintains coaxiality between crankshaft and transmission during clutch disengagement, absorbing minor radial loads while allowing free rotation. This aftermarket replacement bearing fixes jerky gear shifts, persistent high-frequency whine and clutch related vibration faults triggered by raceway corrosion, ball damage and grease depletion on old bearings. Stable rotational performance helps fleets cut unexpected breakdown losses on long-haul highway routes.

Product Advantages Manufactured from high purity bearing steel with strict quenching process to resist contact fatigue. Dual rubber seal design prevents lubricant leakage and keeps dust and metallic contaminants out. Optimized cage structure ensures uniform ball spacing for smooth rotation. Every bearing is sampled for noise and radial clearance testing before packaging, standard dimension to support quick press-fit installation at repair shops.

Applicable Models Suitable for heavy-duty commercial vehicles equipped with ISZ14 engine, mostly used on long-distance freight trucks with manual transmission.

FAQ

Q1: How can excessive clutch vibration accelerate pilot bearing damage?
A1: Repeated impact loads break the internal grease film and cause surface spalling on rolling elements.
Q2: What should technicians avoid doing when pressing this bearing into the flywheel?
A1: Never apply pressure directly on the outer seal to prevent seal deformation and early failure.
Q3: Can bearing noise only be detected when the clutch pedal is fully depressed?
A3: Yes, the pilot bearing rotates only when clutch is released, noise shows up under this condition.