Quick Ref: MSAT-4046
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Machine Screwjack Actuator, 2t to 150t

Model:  MSAT-4046

Model
Type
Part N° Rated Load (tons) Diameter of Lifting Screw (inch) Base Size (inch) Weight with Base Raise of 6" (lbs) Weight for Each Additional 1" of Raise (lbs) Guide Price Quantity
4046-T22542 2 1 .250 Pitch ACME 3 1/2 x 7 4 1/8 x 6 1/ 17 .33 Quote Required
4046-T22543 5 1 1/2 .250 Pitch ACME 6 x 8 35 .85 Quote Required
4046-T22544 10 2 .50 Pitch ACME 7 1/2 x 8 3/4** 52 1.4 Quote Required
4046-T22545 15 2 1/4 .500 Pitch ACME 7 3/4 x 9 1/4 66 1.5 Quote Required
4046-T22546 20 2 1/2 .500 Pitch ACME 8 1/4 x 11 93 2.6 Quote Required
4046-T22547 25 3 .666 Pitch ACME 10 1/4 x 13 3/4 160 2.5 Quote Required
4046-T22548 35 3 3/4 .666 Pitch ACME 10 1/4 x 15 1/2 240 4.1 Quote Required
4046-T22549 50 4 1/2 .6 Pitch Square 9 3/4 x 19 3/4** 410 5.5 Quote Required
4046-T22550 75 5 .666 Pitch Square 14 x 23 650 6.5 Quote Required
4046-T22551 100 6 .750 Pitch Square 20 3/4 x 24 1/2 1200 9.0 Quote Required
4046-T22552 150 7 1.000 Pitch Square 20 3/4 x 24 1/2 1350 12.6 Quote Required
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Screwjack Actuator

Machine Screw Rotating Jack

Machine Screw Jacks

These screw actuators offfer a positive mechanical action, precise positioning and uniform lifting speeds.

The standard configurations include, upright or inverted units with translating or rotating lifting screws, with top plates, threaded or clevis end fittings.

They can be controlled accuratley for positioning within thousands of one inch.

Unevenly distributed loads can be lifted with uniform speeds.

All actuators are designed and built to be positive acting, giving accurate response to motive power.

Top Plate Threaded End Clevis End
Top Plate
Threaded End
Clevis End

Rotating Machine Screwjack Upright Version Dimensions

Rotating Inverted 2 150 Ton Dimensions
Model Number Rating (tons) A (in) B (in) C (in) D (in) E (in) F (in) G (in) H (in) I (in) J (in) K (in)
UM-1803 2 Raise + 2 3/8 3/4 4 1/16 C 0 0.625 1 1/2 1 1/2 3 1/4 4 Holes - 13/32 Dia. On 2 3/8 Dia. B.C. 1 1/2
UM-9003 2 Raise + 2 3/8 3/4 4 1/16 C 0 0.625 1 1/2 1/2 3 1/4 4 Holes - 13/32 Dia. On 2 3/8 Dia B.C 1 1/2
UM-9006 5 Raise +3 1 5 1/4 C 0 1.000 2 1/2 3/4 4 4 Holes - 9/16 Dia. On 3 Dia. B.C. 2
UM-9011 10 Raise +4 2 5 5/8 C 1 1.249 3 1 6 4 Holes - 13/16 Dia. On 4 1/2 Dia. B.C. 3
UM-9016 15 Raise +4 2 6 5/16 C 1 1.500 3 1 6 1/2 4 Holes - 13/16 Dia. On 5 Dia. BC. 3 1/2
UM-9021 20 Raise +5 2 1/2 7 1/8 C 1 3/4 1.750 3 1 7 1/2 4 Holes - 15/16 Dia. On 5 1/2 Dia. B.C. 3 3/4
UM-9026 25 Raise +7 3  8 7/8 12 2 2.500 5 1/2 1 1/4 8 1/2 4 Holes - 1 1/16 Dia. On 6 1/2 Dia. B.C 4 1/2
UM-9036 35 Raise +6 3 1/2 8 7/8 C 2 3.000 5 1/2 1 1/2 9 4 Holes 1 1/16 Dia. On 7 Dia.B.C 5
UM-1851 50 Raise +7 4 10 7/8 12 2 1/2 3.500 6 2 10 6 Holes - 1 1/6 Dia. On 8 Dia. B.C 6
UM-9076 75 Raise + 8 1/2 4 1/2 13 9/16 14 5/8 2 1/2 4.000 7 1/2 2 12 1/2 6 Holes - 1 1/8 Dia. On 10 Dia. B.C. 7
UM-9097 100 Raise +8 5 17 19 5 5.000 7 2 14 6 Holes - 1 1/8 Dia. On 1 Dia. B.C. 8
UM-18151 150 Raise +9 3/4 5 1/2 17 19 3 1/2 5.500 8 3/4 2 1/2 15 1/2 6 Holes - 1 1/2 Dia. On 12 1/12 Dia. B.C. 9

Rotating Screw Jack Inverted Version Dimensions

Rotating Inverted 2 150 Ton Dimensions
Model Number Rating (tons) A (in) B (in) C (in) D (in) E (in) F (in) G (in) H (in) I (in) J (in) K (in)
DM-1803 2 Raise + 2 3/8 3/4 3 3/4 5/8 C .625 1 1/2 1/2 3 1/4 4 Holes - 13/32 Dia. On 2 3/8 Dia. B.C. 1 1/2
DM-9003 2 Raise + 2 3/8 3/4 3 3/4 5/8 C .625 1 1/2 1/2 3 1/4 4 Holes - 13/32 Dia. On 2 3/8 Dia. B.C. 1 1/2
DM-9006 5 Raise + 3 1 5 1/4 2 C 1.000 2 1/2 3/4 4 4 Holes - 9/16 Dia. On 3 Dia. B.C. 2
DM-9011 10 Raise + 4 2 5 5/8 1 1/8 C 1.249 3 1 6 4 Holes - 13/16 Dia. On 4 1/2 Dia. B.C. 3
DM-9016 15 Raise + 4 2 5 1/2 13/16 6 1/2 1.500 3 1 6 1/2 4 Holes - 13/16 Dia. On 5 Dia. B.C. 3 1/2
DM-9021 20 Raise + 5 2 1/2 7 1/8 5/8 7 7/8 1.750 3 1 7 1/2 4 Holes - 15/16 Dia. On 5 1/2 Dia. B.C. 3 3/4
DM-9026 25 Raise +  7 3 8 7/8 1 1/2 9 7/8 2.500 5 1/2 1 1/4 8 1/2 4 Holes - 1 1/16 Dia. On 6 1/2 Dia. B.C. 4 4/12
DM-9036 35 Raise + 6 3 1/2 8 7/8 7/8 9 7/8 3.000 5 1/2 1 1/2 9 4 Holes - 1 1/16 Dia. On 7 Dia. B.C. 5
DM-1851 50 Raise + 7 4 10 7/8 2 5/8 11 1/2 3.500 6 2 10 6 Holes - 1 1/16 Dia. On 8 Dia. B.C. 6
DM-9076 75 Raise + 8 1/2 4 1/2 12 3/8 3 5/8 13 7/8 4.000 7 1/2 2 12 1/2 6 Holes - 1 1/8 Dia. On 10 Dia. B.C. 7
DM-9097 100 Raise + 8 5 17 2 18 5.000 7 2 14 6 Holes - 1 1/8 Dia. On 11 Dia. B.C. 8
DM-18151 150 Raise + 9 3/4 5 1/2 17 2 17 5.500 8 3/4 2 1/2 15 1/2 6 Holes - 1 1/2 Dia. On 12 1/12 Dia. B.C. 9

Rotating Machine Screw Jack Actuator Specifications

* For loads of from 25% to 100%  of Actuator load rating. Torque reauirements are approximately proportional to the load.

** 9003 base is 4 1/8 x 6 1/4.

*** 9051 base is 10 1/4 x 21 3/4.

Standard Actuator Number Upright UM1803 & UM9003 UM9006 UM9011 UM9016 AUM9021 UM9026 UM9036 UM1851 & UM9051 UM9076 UM9097 UM18151
Inverted DM1803 & DM9003 DM9006 DM9011 DM9016 ADM9021 DM9026 DM9036 DM1851 & DM9051 DM9076 DM9097 DM18151
Special Actuator Number Upright UM2003 & UM10003 UM10006 UM10011 UM10016 UM10021 UM10026 UM10036 UM2051 & 10051 UM10076 UM10097 UM20151
Inverted DM2003 & DM10003 DM10006 DM10011 DM10016 DM10021 DM10026 DM10036 DM2051 & DM10051 DM10076 DM10097 DM20151
Rated Load (tons) 2 5 10 15 20 25 35 50 75 100 150
Diameter of Lifting Screw (inch) 1 .250 Pitch ACME 1 1/2 .250 Pitch ACME 2 .50 Pitch ACME 2 1/4 .500 Pitch ACME 2 1/2 .500 Pitch ACME 3 .666 Pitch ACME 3 3/4 .666 Pitch ACME 4 1/2 .6 Pitch Square 5 .666 Pitch Square 6 .750 Pitch Square 7 1.000 Pitch Square
Base Size (inch)

3 1/2 x 7

4 1/8 x 6 1/4

6 x 8 7 1/2 x 8 3/4** 7 3/4 x 9 1/4 8 1/4 x 11 10 1/4 x 13 3/4 10 1/4 x 15 1/2 9 3/4 x 19 3/4** 14 x 23 20 3/4 x 24 1/2 20 3/4 x 24 1/2
Worm Gear Ratios Standard Ratio 6:1 6:1 8:1 8:1 8:1 10 2/3:1 10 2/3:1 10 2/3:1 10 2/3:1 12:1 12:1
Optional 24:1 24:1 24:1 24:1 24:1 32:1 32:1 32:1 32:1 36:1 36:1
Turns of Worm for 1" Raise Standard Ratio 24 16 16 16 16 16 16 16 16 16 12
Optional 96 64 48 48 48 48 48 48 48 48 36
Maximum H.P. Per Actuator Standard Ratio 2 4 5 5 5 8 8 15 15 25 25
Optional 1/2 3/4 1 1/2 1 1/2 1 1/2 2 1/2 2 1/2 6 6 11 11
Torque at Full Load* (lb-ins) Standard Ratio 120 450 750 1,430 2,050 2,700 4,000 7,500 12,000 16,000 28,100
Optional 50 185 400 820 1,170 1,200 2,400 4,200 6,600 8,600 15,500
Actuator Efficiency Rating (%) Standard Ratio 23.2 22.1 23.7 20.2 18.8 18.7 15.8 13.8 12.4 13.0 14.1
Optional 13.3 12.1 15.1 12.9 20.2 10.5 8.9 8.3 7.5 8.0 8.6
Weight with Base Raise of 6" (lbs) 17 35 52 66 93 160 240 410 650 1200 1350
Weight for Each Additional 1" of Raise (lbs) .33 .85 1.4 1.5 2.6 2.5 4.1 5.5 6.5 9.0 12.6

Decimal Ratios

 Standard Actuator Number
Upright
 1802 & 9002
9005
9010
9015
9020
9025
 Inverted  1801 & 9001
9004
9009
9014
9019
9024
Rated Load (tons)  2 5
10
15
20
25
 Lifting Screw (in)
 1" Dia. .250 Pitch ACME
1 1/2" Dia. .250 Pitch ACME
2" Dia. .250 Pitch ACME
2 1/4" Dia. .250 Pitch ACME
2 1/2" Dia. .250 Pitch ACME
3" Dia. .320 Pitch Square
Worm Gear Ratio 25:1
25:1
25:1 25:1 25:1 32:1
 100 100 100 100 100 100
 Torque at Full Load * (lb-ins)
Standard Ratio
48 175
370
640
925
1500
 Optional - -
 -  - -
-
 Actuator Efficiency Rating (%)
Standard Ratio
 13.2 9.1
8.6
7.5
6.9
5.3
 Optional  - -
-
-
-
-
 Maximum H.P. per Actuator
 1/2 3/4 1 1/2
1 1/2
1 1/2
2 1/2

Translating Machine Screw Jack Actuator Specifications

1800 (2000) and 9000 (10000) Series

* For loads from 25% to 100% of actuator load rating. Torque requirements are approximately proportional to the load.
** Closed heights are for standard upright top plate models and may vary with different screw end, inverted models, or when bellows boot is used.

Standard Actuator Number Upright 1802 & 9002 9005 9010 9015 9020 9025 9035 1850 & 9050 9075
  Inverted 1801 & 9001 9004 9009 9014 9019 9024 9034 1849 & 9049 9074
Special Actuator Number Upright 2002 & 10002 10005 10010 10015 10020 10025 10035 2050 & 10050 10075
  Inverted 2001 & 10001 10004 10009 10014 10019 10024 10034 2049 & 10049 10074
Rated Load (tons) 2 5 10 15 20 25 35 50 75
Diameter of Lifting Screws (inch) 1 .250 Pitch ACME 1 1/2 .375 Pitch ACME 2 .500 Pitch ACME 2 1/4 .500 Pitch ACME 2 1/2 .500 Pitch ACME 3 .666 Pitch ACME 3 3/4 .666 Pitch ACME 4 1/2 .666 Pitch Square 5 .666 Pitch Square
Closed Height** (inch) 5 1/4 7 7 1/4 8 9 1/4 11 12 12 16 1/2
Base Size (inch) 3 1/2 x 7
4 1/8 x 6 1/4
6 x 8 7 1/2 x 8 3/4 7 3/4 x 9 1/4 8 1/4 x 11 10 1/4 x
13 3/4
10 1/4 x
15 1/2
9 3/4 x 19 3/4
10 1/2 x 21 3/4
14 x 23
Worm Gear Ratio Standard Ratio 6:1  
6:1 8:1 8:1 8:1 10 2/3:1 10 2/3:1 10 2/3:1 10 2/3:1
Optional 24:1 24:1 24:1 24:1 24:1 32:1 32:1 32:1 32:1
Turns of Worm for 1" Raise Standard Ratio 24 16 16 16 16 16 16 16 16
Optional 96 64 48 48 48 48 48 48 48
Maximum H.P. Per Actuator Standard Ratio 2 4 5 5 5 8 8 15 15
Optional 1/2 3/4 1 1/2 1 1/2 1 1/2 2 1/2 2 1/2 6 6
Torque at Full Load (in-lbs) Standard Ratio 120 450 750 1430 2050 2700 4000 7500 12000
Optional 50 185 400 820 1170 1200 2400 4200 6600
Actuator Efficiency Rating (%) Standard Ratio 23.2 22.1 23.7 20.2 18.8 18.7 15.8 13.8 12.4
Optional 13.3 12.1 15.1 12.9 12.0 10.5 8.9 8.3 7.5
Weight with Base Raise of 6" (lbs) 17 35 52 66 93 160 240 410 650
Weight for Each Additional 1" of Raise (lbs) .33 .85 1.4 1.5 2.6 2.5 3.7 5.5 6.5

4800 and 9400 Series

* For loads from 25% to 100% of actuator load rating. Torque requirements are approximately proportional to the load.
** Closed heights are for standard upright top plate models and may vary with different screw end, inverted models, or when bellows boot is used.

Standard Actuator Number Upright 4802 & 9402 9405 9410 9415 9420 9425 9435 4850 & 9450 9475
Inverted 4801 & 9401 9404 9409 9414 9419 9424 9434 4849 & 9449 9474
Special Actuator Number Upright 5802 & 10402 10405 10410 10415 10420 10425 10435 5850 & 10450 10475
Inverted 5801 & 10401 10404 10409 10414 10419 10424 10434 5849 & 10449 10474
Rated Load (tons) 2 5 10 15 20 25 35 50 75
Torque at Full Load (in-lbs) Standard Ratio 135 500 1045 1573 2255 1320 4400 4620 13200
Optional 55 205 905 1290 1320 1320 2640 4620 7260
Actuator Efficiency Standard Ratio 19.6 19.9 19.8 18.0 17.6 13.4 13.7 12.4 11.3
Optional 11.9 10.9 12.6 11.0 10.8 8.3 7.7 7.3 6.8
Closed Height (in)**   5 1/4 7 7 1/4 8 9 1/2 12 13 14 18 1/2
Weight with Base Raise of 6" (lbs)   18 37 55 70 101 197 250 440 700

Decimal Ratios

Standard Actuator Number Upright 1802 & 9002 9005 9010 9015 9020 9025
Inverted 1801 & 9001 9004 9009 9014 9019 9024
Special Actuator Number Upright 2002 & 10002 10005 10010 10015 10020 10025
Inverted 2001 & 10001 10004 10009 10014 10019 10024
Rated Load (tons) 2 5 10 15 20 25
Lifting Screw (inch) 1˝ Dia. .250 Pitch Acme 1 1/2 Dia. .250 Pitch Acme 2" Dia. .250 Pitch Acme 2 1/4" Dia. .250 Acme 2 1/2" Dia. .250 Pitch Acme 3" Dia. .320 Pitch Square
Worm Gear Ratios 25:1 25:1 25:1 25:1 25:1 32:1
Turns of Worm for 1" Raise 100 100 100 100 100 100
Torque at Full Load (in-lbs) 48
175
370
640
925
1500
Actuator Efficiency Rating (%) 13.2 9.1 8.6
7.5
6.9
5.3
Maximum H.P. Per Actuator  1/2 3/4
1 1/2
1 1/2
1 1/2
2 1/2
2 150 Ton Rotating Parts Image

Rotating Parts List

Index Number Part Name Quantity
1 Screw, Set (excluding 100 and 150 ton) 2
2 Cap, Shell (excluding 100 and 150 ton) 1
3 Shell, Actuator 1
4 Pipe, Bottom 1
4a Expansion plug 1
5 Screw Assembly, Lifting 1
6 Worm Gear 1
7 Bearing, Top Load 1
8 Bearing, Bottom Load 1
9 Screw, Cap 8
10 Washer, Lock 8
11 Flange, Worm 2
12 Shim, Flange (.003 and .010) 2 Each
13 Seal, Oil 2
14 Worm 1
15 Bearing, Worm 2
16 Bushing, Guide (inverted model only) 1
18 Nameplate 1
19 Screws, Drive 2
20 Nut, Lock 1
21 Screw, Set 1
22 Key 1
23 Lifting Nut 1
2 150 Ton Translating Parts Image

Translating Parts List

Index Number Part Name Quantity
1 Screw, Set 1
2 Cap, Shell 1
3 Shell, Actuator 1
4 Pipe, Bottom 1
5 Screw Assembly, Lifting 1
6a Worm Gear 1
6b Worm Gear and Anti Backlash Nut Assembly (Mfg'd and sold in sets only) 1
7 Bearing, Top Load 1
8 Bearing, Bottom Load 1
9 Screw, Cap 12
10 Washer, Lock 12
11 Flange, Worm 2
12 Shim, Flange 2
13 Seal, Oil 2
14 Worm 1
15 Bearing, Worm 2
16 Bushing, Guide (inverted model only) 1
18 Nameplate 1
2 Ton - 75 Ton MS Rotating operations manual.pdf

Rotating Operations Manual

(approx. 3.8Mb)
2 Ton - 75 Ton MS Translating operations manual.pdf

Translating Operations Manual

(approx. 2.6Mb)
FifteenTonMS.pdf

15 ton Specs

(approx. 0.5Mb)
FiveTonMS.pdf

5 ton Specs

(approx. 0.5Mb)
TenTonMS.pdf

10 ton Specs

(approx. 0.6Mb)
ThirtyFiveTonMS.pdf

35 ton Specs

(approx. 0.5Mb)
ThreeTonMS.pdf

3 ton Specs

(approx. 0.7Mb)
TwentyFiveTonMS.pdf

25 ton specs

(approx. 0.5Mb)
TwentyTonMS.pdf

20 ton Specs

(approx. 0.5Mb)
TwoTonMS.pdf

2 ton Specs

(approx. 0.9Mb)
FiftyTonMS.pdf

20 ton Specs

(approx. 0.8Mb)
SeventyFiveTonMS.pdf

75 ton Specs

(approx. 0.5Mb)

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