Friction created by the spinning gears and bearings is designed to generate heat, which helps circulate lubrication inside the gear housing. As a result, the gearboxes can become hot to the touch. The hear is intentional and necessary for proper lubrication.
When the gearbox rotates, grease is thrown against the housing walls. The hear causes the grease to soften and liquefy, allowing it to flow back toward the center and re-lubricate the gears and bearings. The grease is then redistributed outward by the moving parts, repeating the cycle.
There is no specific temperature at which a gearbox is considered "too hot". If a customer expresses concern about excessive heat, the unit should be taken to an authorized ECHO® dealer for evaluation.
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