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What is the efficiency of gear transmission?

1 Answers

Yvette

07/29/25 9:48am

The efficiency of gear transmission is related to the type of gear, machining accuracy, and lubrication conditions. Generally, the efficiency of cylindrical spur gear transmission ranges from 0.9 to 0.99, with commonly used Grade 8 cylindrical spur gears achieving 0.97. For bevel gears, the efficiency ranges from 0.88 to 0.98, with commonly used Grade 8 bevel gears achieving 0.94 to 0.97. Definition of gear transmission: It refers to a mechanism that transmits motion and power through a pair of gears, and it is the most widely used mechanical transmission method in modern equipment. It offers accurate transmission ratios, high efficiency, compact structure, reliable operation, and long service life. Characteristics of gear transmission: High transmission accuracy. Belt drives cannot ensure precise transmission ratios, and chain drives cannot achieve constant instantaneous transmission ratios. However, the commonly used modern involute gears provide theoretically accurate and constant transmission ratios. This is not only a critical requirement for precision machinery and instruments but also an essential condition for reducing dynamic loads and achieving smooth transmission under high-speed and heavy-load conditions.

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