Metric series – ball screw jacks, 2 performance ratings, 1 performance of standard metric ball screw jacks – Power Jacks E-Series - Ball User Manual
Page 3: 2 metric ball screw jack efficiencies
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
Avail
abl
e on R
equ
est
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
Avail
abl
e
on
Req
uest
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
Avail
abl
e
on
Req
uest
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.