Helical Milled Rack
SOTM JIS N4
Cost-effective helical milled racks with milled tooth profiles, offering excellent value for general transmission needs. Multiple hole-pattern layouts are available, with a maximum length of 4000 mm — an ideal choice for woodworking machinery, packaging machinery and logistics conveying equipment.
Precision Grade
Normal Grade N
High Grade H
Precision Grade P
Super Precision SP
Ultra Precision UP
| Item | Parameter Details |
|---|---|
| Precision Grade | JIS N4 |
| Material | S45C Carbon Steel |
| Hardness | HB 170-230(as supplied); local hardening available |
| Module Range | M0.8 – M4.0 |
| Pressure Angle | 20° |
| Helix Angle | 19°31′42″ / 15° Optional |
| Tooth Profile Standard | Involute |
| Surface Treatment | Precision milled + Black-oxide finish (rust prevention) |
| Length Range | Max length 4000 mm; full standard range |
| Mounting Method | Multiple hole layouts available: single-row holes / staggered holes / without holes(-N) |
| Typical Applications | Woodworking machinery, packaging machinery, logistics conveying equipment, simple automation systems |