JWM Series Worm Screw Jack
Overview
JWM Series Worm Screw Jack, listed by Zhejiang Red Sun Machinery Co., Ltd in Zhejiang. The listing gives housing material Cast iron/Ductile iron, housing hardness HBS190-240 and gear material 20CrMnTi alloy steel.
Technical specifications
| Housing material | Cast iron/Ductile iron |
|---|---|
| Housing hardness | HBS190-240 |
| Gear material | 20CrMnTi alloy steel |
| Surface hardness of gears | HRC58~62 |
| Gear core hardness | HRC33~40 |
| Input / Output shaft material | 42CrMo alloy steel |
| Input / Output shaft hardness | HRC25~30 |
| Machining precision of gears | Accurate grinding, 6~5 Grade |
| Lubricating oil | GB L-CKC220-460, Shell Omala220-460 |
| Noise (MAX) | 60~68dB |
| Vibration | ≤20µm |
| Backlash | ≤20Arcmin |