traction drive

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Last updated

July 14, 2026

Quick Summary

A friction drive is a power-transmission system that uses surface friction to transmit motion, rather than teeth. This is distinct from other types of transmissions that might use gears or chains.1

Traction drives are a type of stepless transmission that rely on the rolling friction of components like cylinders, cones, balls, rollers, and disks to transfer power. These drives can be designed so that increased torque leads to increased contact pressure, which in turn reduces slippage. Special lubricants can also be used to enhance tractive effort. Traction transmissions are often chosen for applications where quiet operation is a priority.2

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transmission
…rolling-contact bodies are known as traction drives. In these transmissions, power is transmitted in a variety of ways that depend on the rolling friction of bodies in the form of cylinders, cones, balls, rollers, and disks.
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…rolling-contact bodies are known as traction drives. In these transmissions, power is transmitted in a variety of ways that depend on the rolling friction of bodies in the form of cylinders, cones, balls, rollers, and disks.
Read More