User Manual

3
Metric Series – Ball Screw Jacks
2 Performance Ratings
2.1 Performance of Standard Metric Ball Screw Jacks
Actuator Model 28501 2802 2805 2810 2820 2830 2860
10 25 50 100 200 300 500
Lifting Screw Diameter 20mm 25mm 40mm 50mm 63mm 80mm
Available on Request
Pitch 5mm 5mm 10mm 10mm 20mm 10mm 20mm 10mm 20mm 10mm
Worm Gear Ratio Standard 5 6:1 6:1 8:1 8:1 10 2/3:1
Optional 20 24:1 24:1 24:1 24:1 32:1
Turn of worm
for Raise of
Lifting Screw
standard
10 for
10mm
12 for
10mm
6 for
10mm
6 for
10mm
3 for
10mm
8 for
10mm
4 for
10mm
8 for
10mm
4 for
10mm
5.33 for
10mm
Optional
40 for
10mm
48 for
10mm
24 for
10mm
24 for
10mm
12 for
10mm
24 for
10mm
12 for
10mm
24 for
10mm
12 for
10mm
16 for
10mm
Maximum Input
Power Per
actuator (kW)
Standard 0.375 1.5 3 3.75 3.75 6
Optional 0.18 0.375 0.55 1.125 1.125 1.9
Start-up Torque
at full load (Nm) †
Standard 2.7 5.9 11.1 23.4 44.6 36.4 68.5 75.2 139.4 182
Optional 1.2 2.6 4.9 10.7 20.4 19.1 35.8 39.4 72.9 107.3
Weight with base raise of
150mm (kg)
2.8 8.17 15.88 24.72 45 86
Wright for each additional
25mm raise (kg)
0.08 0.21 0.32 0.57 0.86 1.58
† For loads of 25% to 100% of actuator capacity, torque requirements are approximately proportioned to the load
2.2 Metric Ball Screw Jack Efficiencies
2.2.1 Standard Gear Ratio
Actuator Model 28501 2802 2805 2810 2820 2830 2860
Gear Ratio 5 6 6 8 8 10 2/3
Available
on
Request
Lifting Screw Lead (mm) 5 5 10 10 20 10 20 10 20 20
Actuator Static Efficiency 0.603 0.565 0.600 0.567 0.595 0.546 0.581 0.529 0.571 0.492
Actuator Dynamic
Efficiency
0.681 0.662 0.692 0.663 0.687 0.645 0.674 0.631 0.665 0.595
2.2.2 Optional Gear Ratio
Actuator Model 28501 2802 2805 2810 2820 2830 2860
Gear Ratio 20 24 24 24 24 32
Available
on
Request
Lifting Screw Lead (mm) 5 5 10 10 20 10 20 10 20 20
Actuator Static Efficiency 0.341 0.320 0.340 0.310 0.325 0.348 0.370 0.337 0.364 0.278
Actuator Dynamic
Efficiency
0.429 0.419 0.438 0.407 0.422 0.450 0.470 0.440 0.465 0.371
Note Efficiency values are for standard grease lubricated worm gear box and lifting screw.