Straight Ground Rack
SSTPH JIS N1 / JIS N2
The highest-precision straight-tooth product, with ground-grade tooth-flank finish (Ra <= 0.8 um). Suited to ultra-precision positioning systems such as semiconductor manufacturing equipment, wafer inspection platforms and coordinate stages for precision optical instruments. Supports high-precision multi-section splicing.
Precision Grade
Normal Grade N
High Grade H
Precision Grade P
Super Precision SP
Ultra Precision UP
| Item | Parameter Details |
|---|---|
| Precision Grade | JIS N1 / JIS N2(equivalent to ISO 1328 Grade 4-5) |
| Material | S45C Carbon steel / SCM440 alloy steel (optional) |
| Hardness | HRC 50-55°(SCM440) or HRC 48-52° (S45C) |
| Module Range | M0.8 – M3.0 |
| Pressure Angle | 20° |
| Helix Angle | 0°(straight tooth) |
| Tooth Profile Standard | Involute (DIN 3962 / ISO 1328 Grade 4-5) |
| Surface Treatment | Precision form-ground, Ra <= 0.8 um |
| Length Range | Standard lengths: 250 mm - 2000 mm; multi-section splicing supported |
| Mounting Method | High-precision dowel-pin holes + Mounting tapped holes ensure splicing accuracy |
| Typical Applications | Semiconductor manufacturing equipment, wafer inspection platforms, coordinate stages for precision optical instruments |