RING GEARS
SPECIFICATIONS:
| Precision grade | Gear teeth | Pressure angle | Material | Heat treatment | Core hardness | Surface hardness | Surface treatment | Surface finishing | Datum reference surfacefor gear cutting |
| JIS Grade N9 (JIS B 1702-1:1998) JIS Grade 5 (JIS B 1702:1976) | Standard full depth | 20° | S45C Carbon Steel | - | less than HB194 | less than HB194 | Black oxide | Shaper Cut | Outside diameter |