Unimec TPR 25022 Trapezoidal Screw Jack Render
Unimec TPR 25022 Trapezoidal Screw Jack Render
Code: TPR 25022
Brand: Unimec
Materials
| Material | Normative | Specification | Indications | |
|---|---|---|---|---|
| Worm | 16NiCr4 | EN 10084:2008 | Casehardening alloy steel | Casehardened and ground on teeth and holds |
| Worn wheel | CuAl10Fe2-GZ | EN 1982:2008 | Alluminium bronze | Centrifuged |
| Nut | CuAl10Fe2-GZ | EN 1982:2008 | Alluminium bronze | Centrifuged |
| Threaded spindle | C45 | EN 10083-2:2006 | Carbon steel | Tr 250x22 (ISO 2901:2016) - Rolled or machined |
| Carter | S235 J0 | EN 10025-2:2005 | Welded carbon steel | Completely machined on 6 faces |
| Lubricant | Unimec Mark CA | Calcium based grease | 28 kg |
General features
| Operating temperature [°C] | -10 °C / 80 °C |
|---|---|
| Static load (traction or compression) | 3000 kN |
| Dynamic load (traction or compression) | 2000 kN |
| Maximum input speed | 1800 rpm |
| Main gearbox weight | 1200 kg |
| Trapezoidal screw weight | 350 kg/m |
| Anti-rotation torque at maximum load | 35800 Nm |
| Maximum admissible static lateral loads | 50 kN |
| Center-to-center diameter | 250 mm |
| Maximum radial load on worm | 3,8 kN |
| Standard working conditions | 25 °C - servizio 10% |
Specific features
| Nominal ratios | ||
|---|---|---|
| 1/12 | 1/36 | |
| Real ratio | 1/12 | 1/36 |
| Translation per worm revolution | 1,83 mm | 0,61 mm |
| Efficiency | 14 % | 9 % |
| Start-up efficiency | 8 % | 5 % |
| Maximum linear speed | 1100 | 1375 |
| Torque at maximum load | 3700 Nm | 1570 Nm |
| Worm screw maximum torque | 28500 Nm | 28500 Nm |
| Idle torque | 12 Nm | 8 Nm |
Euler's law (safety factor =2; dynamic compression load)
Limit Load 1 (red) - 2 (blue) - 3 (green)
C = Load [kN]
L = Overall trapezoidal screw length [mm]
Power curves
The magenta zone indicates a potential heating risk. Working cycles must be carefully analized.
VR = Worm rotational speed [rpm]
VL = Spindle translation speed [mm/min]
P = Requested input power [kW]
Construction forms
Forma S
Forma B
Forma D
Unimec Datasheets
| Country & Language | File Name | Download Link |
 United States (English) |
Unimec-EN_59050.pdf | Download |
 Deutschland (Deutsch) |
Unimec-DE_13807.pdf | Download |
 Italy (Italiano) |
Unimec-IT_75906.pdf | Download |
 中国（简体 |
Unimec-CN_95426.pdf | Download |
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