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M-SERIES IMPERIAL MACHINE SCREW JACKS
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Basic Information
Model |
Capacity (Short Tons) |
Lifting Screw |
Weight with base travel of 6” (lb) |
Weight for each additional 1” travel (lb |
Drawing (DWG,DXF or PDF) |
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Diameter |
Pitch |
Form |
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M2555 |
0.25 |
0.5 |
0.25 |
Acme |
2.33 |
0.1 |
On request |
M2625 |
0.5 |
0.625 |
0.125 |
Acme |
2.33 |
0.1 |
On request |
M2501 |
1 |
0.75 |
0.2 |
Acme |
5 |
0.27 |
On request |
M1802 |
2 |
1 |
0.25 |
Acme |
17 |
0.33 |
On request |
M1805 |
5 |
1.5 |
0.375 |
Square |
35 |
0.85 |
On request |
M1810 |
10 |
2 |
0.5 |
Square |
52 |
1.4 |
On request |
M1815 |
15 |
2.25 |
0.5 |
Square |
66 |
1.5 |
On request |
M1820 |
20 |
2.5 |
0.5 |
Square |
93 |
2.6 |
On request |
M1825 |
25 |
3.375 |
0.666 |
Square |
181 |
3.5 |
On request |
M9035 |
35 |
3.75 |
0.666 |
Acme |
240 |
3.7 |
On request |
M1850 |
50 |
4.5 |
0.666 |
Square |
410 |
5.5 |
On request |
M9075 |
75 |
5 |
0.666 |
Square |
650 |
6.5 |
On request |
M1899 |
100 |
6 |
0.75 |
Square |
1200 |
9 |
On request |
M18150 |
150 |
7 |
1 |
Square |
1350 |
12.6 |
On request |
M2250 |
250 |
9 |
1 |
Square |
2700 |
23 |
On request |
Performance Information
Gear Ratio - Option 1
Model |
Worm Gear Ratios |
Turns of worm For 1" Travel |
Max HP per Screw Jack |
Start-Up Torque at Full Load (in.lb) |
Screw Jack Efficiency |
M2555 |
5:1 |
20 |
0.333 |
13 |
0.330 |
M2625 |
5:1 |
40 |
0.333 |
21 |
0.200 |
M2501 |
5:1 |
25 |
0.5 |
55 |
0.245 |
M1802 |
6:1 |
24 |
2 |
120 |
0.232 |
M1805 |
6:1 |
16 |
4 |
450 |
0.221 |
M1810 |
8:1 |
16 |
5 |
950 |
0.220 |
M1815 |
8:1 |
16 |
5 |
1430 |
0.202 |
M1820 |
8:1 |
16 |
5 |
2050 |
0.188 |
M1825 |
10 2/3:1 |
16 |
8 |
3360 |
0.164 |
M9035 |
10 2/3:1 |
16 |
8 |
4000 |
0.158 |
M1850 |
10 2/3:1 |
16 |
15 |
7500 |
0.138 |
M9075 |
10 2/3:1 |
16 |
15 |
12000 |
0.124 |
M1899 |
12:1 |
16 |
25 |
16000 |
0.130 |
M18150 |
12:1 |
12 |
25 |
28100 |
0.141 |
M2250 |
50:1 |
50 |
35 |
20000 |
0.080 |
(for keyed and anti-backlash models consult Power Jacks) |
Gear Ratio - Option 2
Model |
Worm Gear Ratios |
Turns of worm For 1" Travel |
Max HP per Screw Jack |
Start-Up Torque at Full Load (in.lb) |
Screw Jack Efficiency |
M2555 |
- |
- |
- |
- |
- |
M2625 |
- |
- |
- |
- |
- |
M2501 |
20:1 |
100 |
0.25 |
25 |
0.140 |
M1802 |
24:1 |
96 |
0.5 |
50 |
0.133 |
M1805 |
24:1 |
64 |
0.75 |
185 |
0.121 |
M1810 |
24:1 |
48 |
1.5 |
490 |
0.140 |
M1815 |
24:1 |
48 |
1.5 |
820 |
0.129 |
M1820 |
24:1 |
48 |
1.5 |
1170 |
0.120 |
M1825 |
32:1 |
48 |
2.5 |
1900 |
0.092 |
M9035 |
32:1 |
48 |
2.5 |
2400 |
0.089 |
M1850 |
32:1 |
48 |
6 |
4200 |
0.083 |
M9075 |
32:1 |
48 |
6 |
6600 |
0.075 |
M1899 |
36:1 |
48 |
11 |
8600 |
0.080 |
M18150 |
36:1 |
36 |
11 |
15500 |
0.086 |
M2250 |
- |
- |
- |
- |
- |
(for keyed and anti-backlash models consult Power Jacks) |
Model Numbers
Prefix |
Model Type |
Series |
Model |
Stroke (mm) |
Suffix |
K = Keyed Lifting Screw S = All Stainless Steel Screw Jack |
Translating Screw Jacks Rotating Screw Jacks |
M |
Translating Screw Jacks Inverted = Decrease model number by 1, e.g. 1804 Anti-Backlash = Replace first digit of model number by 4, e.g. 4805 Rotating Screw Jacks |
XXX |
1 = Option 2 Gear Ratio B = Bellows Boot G = Second Guide L = Left Hand Worm Shaft Only R = Right Hand Worm Shaft Only X = No Bottom Pipe, Guide Bush Instead |
