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Is the Hyundai CVT transmission equipped with a steel belt or a steel chain?

2 Answers

McCecilia

07/24/25 2:19pm

Performance-oriented CVT transmissions worldwide tend to adopt the chain solution. The structural differences between chains and steel belts are as follows: 1. A CVT steel belt is based on two embedded steel belts as foundational support, 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 push plates to form thrust. Under external force, the push plates compress, and during power transmission, the driving pulley tightly presses against the entire side of the steel belt to create static friction, thereby pushing the driven pulley to rotate via the steel belt. 2. The CVT chain differs significantly in structure from the steel belt. The chain does not directly contact the pulley but transmits torque by compressing the intermediate rocker pins. Structurally, the chain consists of two bundles of annular steel plates and tension plates, with each bundle composed of 12 layers of high-tensile thin steel plates stacked together. Patented T702 high-strength steel is inserted between each group of steel plates to form rocker pins for connection, achieving 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" to generate static friction, driving the chain to transmit torque.

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SanLogan

08/11/25 8:09am

I've spent many years in the automotive repair industry, working on various modern CVT transmissions. Both steel belts and chains are quite common. For example, Japanese brands like Toyota and Honda mostly use steel belts, while German cars like Audi often employ steel chains. The steel belt offers simpler structure and smoother operation, providing quiet and comfortable driving, though it may wear slightly faster. The steel chain is more robust and can handle higher horsepower, but it tends to be noisier. When it comes to maintenance, never delay changing the CVT fluid—otherwise, both belts and chains can easily slip or break. Owners often complain about losing power while driving, which usually stems from poor maintenance. Modern technology has improved, with more durable materials, but driving habits matter—avoid frequent hard acceleration. Check the manual to understand your vehicle model; prevention is the most cost-effective approach.

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