Appendix: Design Scheme of Input Gear
46
Design scheme of input gear
We have a variety of standard input gears for each model and reduction ratio that can be additionally machined
by the customer. Please machine and install the standard input gear based on the customer’s intended use, by
referring to the following examples.
Note: For the model and reduction speed ratio provided with the standard input gears, refer to “Standard input
gear dimensions” on page 48.
Standard input gear specifications
Material
Heat treatment
Carburizing, quenching and tempering
Surface hardness
HRC58 to 62 (excluding the carburizing prevention range)
Material
SCM415 Normalizing or equivalent material
<Standard input gear A: For small motors>
<Standard input gear B: For large motors>
Note: The above drawing shows the shape before the additional machining is performed. Check the dimensions of each section in the
“Dimensions” table on pages 48 and 49.
• Reference for additional machining
Standard input gears come equipped with center holes.
When modifying them, be sure to grind the boss outer diameter (D1)
with reference to the center hole, and use it as the reference surface.
Design of the input gear
Please refer to the chart below. Use it as a reference when the customer designs an input gear on their own.
Design flow
When modifying the standard input gear
When manufacturing a special input gear
Appendix
Refer to page 45
Refer to pages 45 to 47.
Refer to page 47
Refer to pages 50
and 51
Refer to pages 45 to47.
Refer to page 47
(Plunge grinding section)
(Plunge grinding section)
Carburizing prevention range
Carburizing
prevention range
60°C center hole, type A
60°C center hole, type A
(P
lu
ng
e
gr
in
di
ng
se
ct
io
n)
(P
lu
ng
e
gr
in
di
ng
se
ct
io
n)
