Helical Quenched & Tempered Ground Rack (Alloy Steel Flagship)
MOTPQ JIS N1 (ISO 5)
Flagship helical ground product: SCM440 alloy steel, quenched and tempered then precision ground, with surface roughness Ra <= 0.4 um and locating-hole tolerances held within +/-0.01 mm. It represents the highest overall performance of the SMAGIC rack range and is suited to aerospace ground-test equipment, high-end medical imaging tables and nano-level positioning platforms.
Precision Grade
Normal Grade N
High Grade H
Precision Grade P
Super Precision SP
Ultra Precision UP
| Item | Parameter Details |
|---|---|
| Precision Grade | JIS N1(equivalent to ISO 5) |
| Material | SCM440 Alloy steel (quenched and tempered + ground) |
| Hardness | HRC 50-55° |
| Module Range | M1.0 – M2.5 |
| Pressure Angle | 20° |
| Helix Angle | 19°31′42″ |
| Tooth Profile Standard | Involute (DIN 3962 / ISO 1328 Grade 4) |
| Surface Treatment | Quenched and tempered + Form grinding + Surface polished, Ra <= 0.4 um |
| Length Range | Standard lengths: 500 mm - 2000 mm; customizable |
| Mounting Method | Precision-grade locating holes, tolerances held within +/-0.01 mm |
| Typical Applications | Aerospace ground-test equipment, high-end medical imaging tables, nano-level positioning platforms |