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Brand: C.OEFT
OE numbers: PS9002
Product Name:One-way Clutch Bearing
Compatible model: /
Product status: New
Product weight: 0.0545KG
Packaging size: 11*11*8.5 cm
Product packaging: Neutral Packaging
Car Series: Germany
Car Type: for Volkswagen Audi
1. Core Function: One-Way Rotation Control and Torque Transmission
As a key component for directional rotation control, the PS9002 one-way clutch bearing’s primary function is to allow free rotation in one direction while reliably locking rotation in the opposite direction, thereby achieving one-way torque transmission. In automotive starters, for example, when the starter motor drives the engine crankshaft to start, the PS9002 allows the motor’s output shaft to rotate clockwise (driving direction), transmitting torque to the crankshaft; once the engine starts and the crankshaft speed exceeds the motor speed, the bearing immediately locks the reverse rotation (preventing the crankshaft from driving the motor), avoiding damage to the motor’s armature due to overspeed. In industrial conveyors, the PS9002 is installed in the transmission chain to prevent the conveyor belt from reversing due to load gravity when the power is cut off, ensuring the safety of goods and equipment. This one-way control function is essential for preventing reverse torque damage and ensuring the orderly operation of mechanical systems.
2. Overload Protection for Transmission Components
The PS9002 one-way clutch bearing has a built-in overload protection capability, which can buffer and limit excessive torque to protect downstream transmission components. When the torque applied to the bearing exceeds its maximum static torque (180 N·m), the wedge blocks will temporarily slip relative to the inner/outer rings, avoiding instantaneous overload damage to components such as gears, shafts, and motors. For instance, in a small industrial mixer, if the mixing blade is stuck by hard materials, the torque in the transmission system will surge. At this point, the PS9002’s wedge blocks slip, cutting off the torque transmission path and preventing the mixer’s motor from burning out or the gear teeth from breaking. After the overload is removed, the wedge blocks reset under the action of the springs, and the bearing resumes normal operation. This overload protection function reduces the maintenance frequency and replacement costs of equipment components.
1. High-Strength Structural Design for Reliable One-Way Locking
The PS9002 one-way clutch bearing adopts an integrated wedge-type structural design, with core components including high-precision wedge blocks, springs, and an outer ring crafted from high-quality GCr15 bearing steel. Through a strict heat treatment process (quenching at 830-850°C and low-temperature tempering at 160-180°C), the wedge blocks and outer ring achieve a surface hardness of HRC 61-64 and a core hardness of HRC 30-35, balancing exceptional wear resistance and impact toughness. The wedge block’s angle is precisely ground to 8-10°, ensuring it can quickly lock the rotating direction under rated load (maximum static torque of 180 N·m) without slipping. Compared to traditional roller-type one-way bearings, the PS9002’s wedge-type structure has 30% higher locking reliability, making it suitable for high-speed rotation scenarios (maximum allowable speed of 6000 rpm) such as automotive starters, transmission auxiliary systems, and industrial reducers.
2. Low Friction Coefficient for Efficient Power Transmission
To minimize energy loss during operation, the PS9002 one-way clutch bearing integrates multiple friction-reducing optimizations. The contact surface between the wedge blocks and the inner/outer rings is polished to a surface roughness (Ra) of ≤0.1 μm, and a thin layer of molybdenum disulfide (MoS₂) solid lubricant is applied—reducing the dynamic friction coefficient to 0.008-0.012, which is 25% lower than that of unlubricated bearing models. Additionally, the bearing’s retainer is made of glass fiber-reinforced nylon 66 (GF30), which has excellent self-lubricating properties and low friction with the wedge blocks. This low-friction design ensures that when the bearing is in the free-rotation state (allowing rotation in one direction), power loss is reduced by 5-8% compared to conventional one-way bearings, improving the overall efficiency of the transmission system.
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