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Is the Subaru CVT using a steel belt or chain drive?

1 Answers

GabrielleAnn

07/29/25 6:47pm

Subaru CVT uses a chain drive. The structural differences between CVT using chains and steel belts are as follows: 1. Chain: The chain does not directly contact the pulley but transmits torque by compressing the intermediate rocker pins. Structurally, the chain consists of two sets of circular steel plates and tension plates. Each set of steel belts is composed of 12 high-tension thin steel plates stacked together. High-strength steel is inserted between each set of steel plates to form rocker pins for connection, with a tensile strength of up to 2000 MPa. This chain structure can only transmit power by "pulling." The driving pulley compresses the chain's "rocker pins," creating static friction to drive the chain and transmit torque. 2. Steel belt: The CVT steel belt is supported by two embedded steel belts as the base, with hundreds of steel plates clamped onto the metal belt. This push-plate structure can only transmit power by "pushing," utilizing the hardness of the material between the plates to form thrust. The push plates undergo minimal deformation under external force. During power transmission, the driving pulley tightly presses against the entire side of the steel belt, creating static friction, and the driving pulley pushes the driven pulley to rotate via the steel belt.

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