Appendix: Design Scheme of Input Gear
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Gear tooth specifications
Refer to the specifications shown in the following tables when designing with a processed or non-standard
input gear.
For a model or speed ratio other than those listed below, contact us.
Common specifications
Tooth profile Full depth
Pressure angle (°) 20
Precision JIS B 1702: 1976 Grade 5
Spur gear tooth surface hardness and material
Heat treatment Carburizing, quenching and tempering
Surface hardness HRC 58 to 62
Effective case depth <HV513> (mm) 0.3 to 0.7 *1
Material SCM415 Normalizing
Alternate material SCM420 Normalizing
*1 The value will differ depending on the module.
Module 1 or lower More than 1
Effective case depth <HV513> (mm) 0.2 to 0.6 0.3 to 0.7
Input gear tooth specifications for each model
Effective face
width
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