Screw Jack Design Guide - Power Jacks - #101

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Text version of the page
E £1
screw jacks
1.3.2.8. Imperial Ball Screw Actuators with Bellows Boots
Features
• Protects the screw from dust and dirt.
• Helps maintain the proper lubrication.
• Guards against moisture and corrosive contaminants.
• Boots are made of neoprene-coated nylon with sewn construction. Other materials are available for applications involving high temperatures, highly corrosive atmospheres and other special conditions.
Boot Installation Data
^-1-Capacity
1000 lb
2 Ton
3 Ton
5 Ton
::'-1-~ Shell Cap
2.25
3.5
3.5
5.375
J
| ^Diameter A
A
Capacity
10 Ton
20 Ton
25 Ton
50 Ton
Shell Cap Diameter "A"
4.5
7
8.875
9.5
i
Note For horizontal installation exceeding 18" of travel, Internal boot guides are recommended.
Closed Height "B"
Raise
Model No.
Boot O.D.
1-12"
18"
24"
30"
36"
48"
60"
72"
28631
4.50
5.000
-
-
-
-
-
-
-
2802
6.63
7.500
7.500
7.500
8.500
-
-
-
-
28021
6.63
7.500
7.500
7.500
8.500
-
-
-
-
9802
6.63
7.500
7.500
7.500
8.500
-
-
-
-
98021
6.63
7.500
7.500
7.500
8.500
-
-
-
-
28003
6.63
9.250
9.250
9.250
10.250
10.250
11.250
-
-
2805
7.50
10.750
10.750
10.750
12.500
12.500
13.750
-
-
28051
7.50
10.750
10.750
10.750
12.500
12.500
13.750
-
-
2810
7.00
10.375
10.375
10.375
11.625
11.625
12.875
-
-
28101
7.00
10.375
10.375
10.375
11.625
11.625
12.875
-
-
2820
9.00
16.500
16.500
16.500
16.500
16.500
18.500
20.500
21.500
2825
11.00
19.750
19.750
19.750
19.750
19.750
21.250
22.750
24.250
2860
12.00
25.375
25.375
25.375
25.375
25.375
26.375
27.375
28.375
Note 1. (-) Indicates "Not Applicable".
2. For lengths of raise not detailed in the above table consult Power Jacks Ltd.
3. All dimensions in inches (1" = 25.4 mm).
4. Dimensions subject to change without notice.
sectionone

pageCatalog pdf di En 2012-05-22-31