MRO Magazine

Timken to supply components for new GM transmission

Canton, OH -- The Timken Company has signed an agreement to supply steel gear preforms for the new six-speed automa...


Industry

February 20, 2004
By MRO Magazine
MRO Magazine

Canton, OH — The Timken Company has signed an agreement to supply steel gear preforms for the new six-speed automatic transmission currently in development by General Motors Corporation. The multi-year agreement includes supplying 100% of the gear preforms for the first two models of the rear-wheel drive version of GM’s newly developed family of transmissions.

Timken will provide precision-machined steel preforms that GM will use as the material for 20 transmission components, including sun gears, ring gears and pinion gears. These planetary gears play a role in determining the ratio for the gear sets in a transmission. The new six-speed transmissions will be used in a number of GM vehicles beginning in 2006.

Timken engineers and metallurgists have worked with GM for nearly two years analyzing application requirements and identifying appropriate steel grades. The steels selected provide long life in high wear conditions, as well as good machinability to accommodate the precision machining required to produce gears.

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