The squeaky wheel…

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Timken’s HDL, in-seal pumping mechanism includes vanes and channels that redirect and recirculate grease during operation.

Most folks know that Canton, Ohio-based Timken Corp. is well recognized for manufacturing tapered roller bearings – they’ve been doing it since 1899. But the company has also been working at material development and production for 80 years.

Drawing on that experience, and partnering with seal manufacturers, Timken recently broadened its direction to include integral seal design for its line of grease-lubricated wheel end systems.

Because grease retention and contaminant exclusion have a great impact on bearing life, a seal’s performance is critical. One high-performance seal feature developed by Timken is the hydrodynamic labyrinth (HDL) pumping mechanism, which helps recirculate grease within the bearing during operation. That, says the company, maintains lower torque from friction, and reduces running temperature, both contributing to extended seal and bearing life.