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How to Calculate Gear Ratio and Output Speed
For a simple reduction gearbox, output speed is approximately input speed divided by the transmission ratio. This relationship is also a powerful QA check when reading a gearbox selection table.
Basic equations
i = n₁ / n₂
n₂ = n₁ / i
Where n₁ is input speed, n₂ is output speed and i is reduction ratio.
Example
With 1450 rpm input and ratio 28.37, the theoretical output speed is about 51.1 rpm. Small differences in published tables can result from rounding or the actual rated motor speed used.
How this applies to R, F, K and S gear units
The same engineering principle applies across the CHINFAR four-series platform, but the mechanical layout changes: R is inline/near-inline, F is parallel-shaft, and K/S are right-angle families. Use the principle to define the requirement, then select a configuration within the appropriate family.
Related product families
- R Series Helical Gear Unit
- F Series Parallel Shaft Helical Gear Unit
- K Series Helical-Bevel Gear Unit
- S Series Helical-Worm Gear Unit
相关产品系列与技术资源
需要为您机器配置一款齿轮箱？
请提供电机功率、输入转速、所需输出转速/速比、预期输出扭矩、安装方式，以及可用的安装图纸。承发可据此为您先筛选 R/F/K/S 系列配置，再做最终工程复核。
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