Quick Ref: BSAT-4055
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Ball Screw Actuators, 0.5t to 50t

Model:  BSAT-4055

Model
Custom Dropdown
Part N° Capacity (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
4055-T22632 1/2 5/8 .200 Lead 2 1/4 x 4 2.75 0.1 Quote Required
4055-T22633 2 1 .250 Lead 3 1/2 x 7** 20 0.3 Quote Required
4055-T22634 2 1, 1.000 Lead 3 1/2 x 7 20 0.3 Quote Required
4055-T22635 3 1 11/64 .413 Lead 3 1/2 x 7 21 0.4 Quote Required
4055-T22636 5 1 1/2 .474 Lead 6 x 8 40 0.9 Quote Required
4055-T22637 5 1 1/2, 1.000 Lead 6 x 8 40 0.9 Quote Required
4055-T22638 10 1 1/2,.474 Lead 7 1/2 x 8 3/4 50 0.9 Quote Required
4055-T22639 10 1 1/2 1.000 Lead 7 1/2 x 8 3/4 50 0.9 Quote Required
4055-T22640 20 2 1/4, .500 Lead 8 1/4 x 11 115 1.5 Quote Required
4055-T22641 25 3, .660 Lead 10 1/4 x 13 3/4 235 2.9 Quote Required
4055-T22642 50 4, 1.000 Lead 9 3/4 x 19 3/4 520 5.0 Quote Required
Add to Quote Basket   ?  

Ball screw jack.

Rotating And Translating Ball Screw Actuators

These Ball Screw Actuators provide high efficiency and high speed in one linear positioning package.

The positive action of the low friction ball screw and nut design provides longer life at load and requires less power to achieve a specified thrust.

Ball Screw Actuators can be used individually, in tandem or as part of a larger mechanical system.

With lifts upto 20 feet, ball screw actuators offer the perfect solution to many linear positioning applications.

  • Anti Rotation models are available.
  • Move loads and apply force more efficiently than other mechanical actuators.
  • Require less power by providing positive mechanical action.
  • Permit faster operation and longer life under load.
  • Long predicatable ball screw and ball nut life.
  • Handles full load in tension or compression.

Ball Screw Actuator Upright Dimensions

*1˝ Lead Screw Models

Rotating Upright Dimensions
Model Number Rating Drawing Ref. A B C D E F G H I J K L M
UM-28632 1/2 TON 28631 Raise +2 5/8 2 3/8 C 0 .437 1.740 .530 2.600 1" sq .797 .822 4 Holes - 17/64 Dia. On 2 3/32 Dia. B.C.
UM-9803 & KUM-2803 2 TON 9802 & 2802 Raise +3 1/16 1 1/8 4 1/16 C 0 .750 2.377 .630 3 1/4 1.500 sq. 1.194 1.104 4 Holes - 17/64 Dia. On 2 3/4 Dia. B.C.
UM-98031* KUM-28031* 2 TON 9802 & 2802 Raise +3 11/16 1 1/8 4 1/16 C 0 .750 3.030 .630 4 13/64 1.500 sq. 1.194 1.104 4 Holes - 17/64 Dia. On 2 3/4 Dia. B.C.
UM-98004 & KUM-28004 3 TON 28003 Raise +3 3/4 1 1/8 4 1/16 4 1/2 0 .750 3.395 .832 4 15/16 2.125 1.386 1.587 4 Holes - 25/64 Dia. On 3 7/16 Dia. B.C.
UM-9806 5 TON 9805 Raise +4 5/8 1 5 1/4 C 0 1.000 4.333 .895 4 15/16 2.625 1.690 1.981 4 Holes - 17/32 Dia. On 4 1/16 Dia. B.C.
UM-98061* 5 TON 9805 Raise +4 1 5 1/4 C 0 1.000 3.648 1.020 4 15/16 2.625 1.720 1.718 4 Holes - 17/32 Dia. On 4 1/8 Dia. B.C.
UM-9811 10 TON 9810 Raise +6 1 5 5/8 C 0 1.000 4.333 .895 4 15/16 2.625 1.690 1.981 4 Holes - 17/32 Dia. On 4 1/16 Dia. B.C.
UM-98111* 10 TON 9810 Raise +5 1 5 5/8 C 0 1.000 3.648 1.020 4 15/16 2.625 1.720 1.718 4 Holes - 17/32 Dia. On 4 1/8 Dia. B.C.
AUM-9821 20 TON 9820 Raise +8 2 1/2 7 1/8 8 1/8 1 3/4 1.750 6.706 1.582 5 3/8 3.375 2.272 2.561 6 Holes - 21/32 Dia. On 4 3/8 Dia. B.C.
UM-9826 25 TON 9825 Raise +10 2 1/4 8 7/8 10 1/2 2 2.250 9.395 2.020 7 3/8 4.751 3.076 3.349 8 Holes - 25/32 Dia. On 6 1/4 Dia. B.C.
UM-2861* 50 TON 2860 Raise +15 3 1/4 10 7/8 12 3/4 3.250 12.625 2.020 9 3/4 5.880 3.756 4.029 6 Holes - 1 1/32 Dia. On 8 Dia. B.C.

Ball Screw Actuator Inverted Dimensions

*1˝ Lead Screw Models

Rotating Inverted Dimensions
Model Number Rating Drawing Ref. A B C D E F G H I J K L
DM-28632 1/2 TON 28631 RAISE + 2 5/8 2 3/8 3/8 .437 1.740 .530 2.600 1˝ Sq. .797 .822 4 Holes - 17/64 Dia. On 2 3/32 Dia. B.C.
DM-9803 & KDM-2803 2 TON 9802 & 2802 RAISE + 3 1 1/8 3 3/4 5/8 .750 2.377 .630 3 1/4 1.500 Sq. 1.194 1.104 4 Holes - 17/64 Dia. On 2 3/4 Dia. B.C.
DM-9803 & KDM-2803 2 TON 9802 & 2802 RAISE + 3 5/8 1 1/8 3 3/4 5/8 .750 3.030 .630 4 13/64 1.500 Sq. 1.194 1.104 4 Holes - 17/64 Dia. On 2 3/4 Dia. B.C.
DM98004 & KDM-28004 3 TON 28003 RAISE + 3 3/4 1 1/8 3 3/4 1 .750 3.395 .832 4 15/16 2.125 1.386 1.587 4 Holes - 25/64 Dia. On 3 7/16 Dia. B.C.
DM-9806 5 TON 9805 RAISE + 4 5/8 1 5 1/4 3/4 1.000 4.333 .895 4 15/16 2.625 1.690 1.981 4 Holes - 17/32 Dia. On 4 1/16 Dia. B.C.
DM-98061* 5 TON 9805 RAISE + 4 1 5 1/4 3/4 1.000 3.648 1.020 4 15/16 2.625 1.720 1.718 4 Holes - 17/32 Dia. On 4 1/8 Dia. B.C.
DM-9811 10 TON 9810 RAISE + 6 1 5 1 1/8 1.000 4.333 .895 4 15/16 2.625 1.690 1.981 4 Holes - 17/32 Dia. On 4 1/16 Dia. B.C.
DM-98111* 10 TON 9810 RAISE + 6 1 5 1 1/8 1.000 3.648 1.020 4 15/16 2.625 1.720 1.718 4 Holes - 17/32 Dia. On 4 1/8 Dia. B.C.
ADM-9821 20 TON 9820 RAISE + 8 2 1/2 7 1/8 1 5/8 1.750 6.706 1.582 5 3/8 3.375 2.272 2.561 6 Holes - 21/32 Dia. On 4 3/8 Dia. B.C.
DM-9826 25 TON 9825 RAISE + 10 2 1/4 8 7/8 2 1/2 2.250 9.395 2.020 7 3/8 4.751 3.076 3.349 8 Holes - 25/32 Dia. On 6 1/4 Dia. B.C.
DM-2861* 50 TON 2860 RAISE + 15 3 1/4 11 2 1/2 3.250 12.625 2.020 9 3/4 5.880 3.756 4.029 6 Holes - 1 1/32 Dia. On 8 Dia. B.C.

Rotating Ball Screw Specifications

Standard Model Number Upright UM28632 KUM2803/UM9803 KUM28004/UM98004 KUM2804/UM9804 UM9806 UM98061 UM9811 UM98111 AUM9821 UM9826 UM2861
Inverted DM28632 KDM28031/UM98031 KDM28004/UM98004 KDM2804/DM98004 DM9806 DM98061 DM9811 DM98111 ADM9821 DM9826 DM2861
Special Model Number Upright UM38632 UM3803/UM9803 UM38004/UM98004 UM3804/UM108004 UM10806 UM10806 UM10811 UM10811 UM10821 UM10826 UM3861
Inverted DM32632 DM3803/UM9803 DM38004/UM98004 DM3804/DM108004 DM10806 DM10806 DM10811 DM10811 DM10821 DM10826 DM3861
Capacity (tons) 1/2 2 2 3 5 5 10 10 20 25 50
Diameter of Lifting Screw (inch) 5/8 .200 Lead 1 .250 Lead 1, 1.000 Lead 1 11/64 .413 Lead 1 1/2 .474 Lead

1 1/2, 1.000 Lead

1 1/2,.474 Lead 1 1/2 1.000 Lead 2 1/4, .500 Lead 3, .660 Lead 4, 1.000 Lead
Base Size (inch) 2 1/4 x 4 3 1/2 x 7** 3 1/2 x 7 3 1/2 x 7 6 x 8 6 x 8 7 1/2 x 8 3/4 7 1/2 x 8 3/4 8 1/4 x 11 10 1/4 x 13 3/4 9 3/4 x 19 3/4
Worm Gear Ratios Standard Ratio 5:1 6:1 6:1 6:1 6:1 6:1 8:1 8:1 8:1 10 2/3:1 10 2/3:1
Option 1 20:1 12:1 24:1 12:1 24:1 24:1 24:1 24:1 24:1 32:1 32:1
Option 2 - 24:1 - 24:1 - - - - - - -
Turns of Worm for 1" Raise Standard Ratio 25 24 6 14.526 12.667 6 16.888 8 16 16.16 10.66
Option 1 100 48 24 29.052 50.667 24 50.667 24 48 48.48 32
Option 2 - 96 - 58.104 - - - - - - -
Maximum H.P Per Actuator Standard Ratio 1/3 2 2 2 4 4 5 5 5 8 15
Option1 1/6 3/4 1/2 3/4 3/4 3/4 1 1/2 1 1/2 1 1/2 2 1/2 6
Option 2 - 1/2 - 1/2 - - - - - - -
Starting Torque at Full Load (lb-ins) Standard Ratio 10.5 50 180 110 220 500 350 800 700 925 2700
Option 1 5.0 30 80 68 90 206 175 400 325 475 1500
Option 2 - 25 - 25 - - - - - - -
Running Torque at Full Load (lb-ins) Standard Ratio 9.5 45 160 100 180 410 300 700 650 825 2200
Option 1 4.5 25 70 60 80 183 150 290 300 425 1200
Option 2 - 20 - 45 - - - - - - -

Actuator Efficiency Rating (%)

Standard Ratio 65 59 59 59 70 70 65 65 61 60 55
Option 1 38 44 33 44 39 39 42 42 44 39 33
Option 2 - 33 - 33 - - - - - - -
Weight with Base Raise of 6" (lbs) 2.75 20 20 21 40 40 50 50 115 235 520
Weight for Each Additional 1" of Raise (lbs) 0.10 0.3 0.3 0.4 0.9 0.9 0.9 0.9 1.5 2.9 5.0
Hold Back Torque at Rated Load (lb-ft) Standard Ratio 1 2 2 7 8 8 11 11 24 24 92
Option 1 0.5 1

0.5

2 0.5 0.5 0.5 0.5 2 2 33
Option 2 - 0.5 - 0.5 - - - - - - -

Translating Ball Screw Specifications

Standard Model Numbers Upright 28631
 2802/9802  28021/98021*  28003/98003  9805 98051†
 9810 98101‡
 9820  9825 2860
Inverted 28630
 2801/9801 28011/98011
28002/98002  9804  98041 9809
 98091 9819
 9824  2859
Special Model Numbers Upright 38631
 3802/9802  3802/9802  38003/108003 10805
0805
10810
10810
10820
10825
 3860
Inverted  38630 3801/9801
3801/9801
38002/108002
10804
10804
10809
10809
10819
10824
3859
Rated Load (tons) 1/2
2
2
3
5
5
10
10
20
25
50
Diameter of Lifting Screw (inch) 5/8 .200 Lead
1 .250 Lead
1 1.000 Lead
1 11/64 .413 Lead
1 1/2 .474 Lead
1 1/2 1.000 Lead
1 1/2 .474 Lead
1 1/2 1.000 Lead
2 1/4 .500 Lead
3 .660 Lead
4 1.000 Lead
Closed Height (inch)  5  7 1/2 7 1/2
 9 1/4
10 3/4
10 3/4
10 3/8
10 3/8
16 1/2
19 3/4
25 3/8
Base Size (inch)  2 1/4 x 4
3 1/2 x 7
3 1/2 x 7
3 1/2 x 7
6 x 8
6 x 8
7 1/2 x 8 3/4
7 1/2 x 8 3/4
8 1/4 x 11
10 1/4 x 13 3/4
9 3/4 x 19 3/4
Worm Gear Ratios Standard Ratio 5:1
6:1
6:1
6:1
6:1
6:1
8:1
8:1
8:1
10 2/3:1
10 2/3:1
Option 1 20:1
12:1
24:1
12:1
24:1
24:1
24:1
24:1
24:1
32:1
32:1
Option 2 -
24:1
-
24:1
-
-
-
-
-
-
-
Turns of Worm for 1" Raise Standard Ratio 25
24
6
14.526
12.667
6
16.888
8
16
16.16
10.66
Option 1 100
48
24
29.052
50.667
24
50.667
24
48
48.48
32
Option 2  - 96
-
58.104
-
-
-
-
-
-
-
Maximum H.P Per Actuator Standard Ratio 1/3
2
2
2
4
4
5
5
5
 8 15
Option 1  1/6 3/4
1/2
3/4
3/4
3/4
1 1/2
1 1/2
1 1/2
2 1/2
6
Option 2 -
1/2
-
1/2
-
-
-
-
-
-
-
 Starting Torque at Full Load (lb-ins)
  
Standard Ratio
10.5
50
180
110
220
500
350
800
700
925
2700
 Option 1
5.0
 30 80
68
90
206
175
400
325
475
1500
 Option 2
-
25
-
50
-
-
-
-
-
-
-
 Running Torque at Full Load (lb-ins)
  
Standard Ratio
 9.5 45
160
100
180
410
300
700
650
825
2200
 Option 1
4.5
25
70
60
80
183
150
290
300
425
1200
 Option 2
 - 20
-
45
-
-
-
-
-
-
-
 Actuator Efficiency Rating (%)
  
Standard Ratio
 65 59
59
59
70
70
65
65
61
60
55
 Option 1
38
 44  33  44 39
39
42
42
44
39
33
 Option 2
 - 33
-
33
-
-
-
-
-
-
-
Weight with Base Raise of 6" (lbs)
 2.75  20  20 21
40
40
50
50
115
235
520
 Weight for Each Additional 1" Raise (lbs)
0.1
0.3
0.3
0.4
0.9
0.9
0.9
0.9
1.5
2.9
5.0
 Hold Back Torque at Rated Load (in-lbs)
 
 Standard Ratio
1
2
2
7
8
8
11
11
24
24
92
 Option 1
0.5
1
0.5
2
0.5
0.5
0.5
0.5
2
2
33
Option 2 - 0.5 - 0.5 - - - - - - -

Rotating Ball Screw Actuator Parts List

Ball Screw Parts List
 Index Number
Part Name
Quantity
1 Screw, Set (Shell Cap)
2
 2  Shell Cap
 1
 3  Shell, Actuator
 1
 4  Pipe, Bottom
 1
 4a  Plug, Expansion
 1
 5  Ball Screw
 1
 6  Worm Gear
 1
 7  Bearing, Top Load
 1
 8  Bearing, Bottom Load
 1
 9  Screw, Cap
 8
 9a  Screws, Set (1/2 ton model)
 4
 10  Washer, Lock
 8
 11  Flange, Worm
 2
 11a  Bushing, Worm (1/2 ton model)
 2
 12  Shim, Flange
 2
 13  Seal, Oil
 2
 14  Worm  1
 15  Bearing, Worm
 2
 15a  Bearing, Needle (1/2 ton model)
 2
 15b  Washer, Thrust (1/2 ton model)
 4
 16  Bushing, Guide (inverted models only)
 1
 17 Fitting, Grease
 1
 18  Nameplate  1
 19  Screws, Drive
 2
20 Nut, Lock 1
21 Screw, Set (Locknut) 1
22 Key 1
23 Spacer 1
24 Lifting Nut 1

Translating Ball Screw Actuator Parts List

Translating Ball Screw Parts List
Index Number Part Name Quantity
1 Screw, Set 2
2 Cap, Shell 1
3 Shell, Actuator 1
4 Bearing, L 1
5 Pipe, Bottom 1
6 Ball Screw 1
7 Ball Nut Assembly 1
8 Bearing, Bottom Load 1
9 Screw, Set 2
10 Worm, Gear 1
11 Screw, Cap 1
12 Washer, Lock 1
13 Disc, Retaining 1
14 Screw, Cap 8
15 Washer, Lock 8
16 Flange, Worm 2
17 Shim, Flange 2
18 Seal, Oil 2
19 Worm 1
20 Bearing, Worm 2
21 Bushing, Guide (inverted models only) 1
22 Fitting, Grease As Required
23 Nameplate 1
Ball Screw Rotating.pdf

Rotating Ball Screw Actuator Specs

(approx. 3.8Mb)
Ball Screw Translating.pdf

Rotating Ball Screw Actuator Specs

(approx. 1.9Mb)

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