3
Section I
General Information
1-1. General
This manual contains maintenance instructions for Duff
Norton translating machine screw actuators of two ton
to 75 ton capacity. It describes and details procedures
for installation, disassembly, cleaning, inspection, and
assembly of these actuators.
1-2. Applications
Industrial Use Only
The actuators described and
illustrated in this manual are intended for industrial use
only and should not be used to lift, support or otherwise
transport people unless you have a written statement
from Duff-Norton which authorizes the specific actuator
unit, as used in your application, as suitable for moving
people.
These actuators are intended for a clean, non-corrosive
environment with ambient temperatures ranging from -20
to 200 ° F. If your environment is dirty and/or contains
abrasive particles it is important to protect the screw with
a boot. If your atmosphere is corrosive it is important to
specify a non-corrosive material or finish. Duff-Norton
can provide stainless steel, nickel plated or epoxy coated
actuators. If your duty is high or your use severe, more
frequent lubrication should be employed. Duff-Norton
publishes a Mechanical Actuator Design Guide, Catalog
No. 2003, which you may find helpful in the selection
and application of mechanical actuators. If you need
additional help, please contact Duff-Norton at (800) 477-
5002.
1-3. Specifications
Table 1-1. 1800 (2000) and 9000 (10000) Series
Standard Actuator
Model No.
Upright
1802
9002
9005
9010
9015
9020
9025
9035
1850
9050
9075
Inverted
1801
9001
9004
9009
9019
9019
9024
9034
1849
9049
9074
Special Actuator
Model No.
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 Screw (Inches)
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** (Inches)
5-1/4
7
7-1/4
8
9-1/4
11
12
13
16-1/2
Base Size (Inches)
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 Ratios
Std 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-inch Raise
Std 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
Std 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)
Std Ratio
120
450
750
1430
2050
2700
4000
7500
12000
Optional
50
185
400
820
1170
1200
2400
4200
6600
Actuator Efficiency
Rating (%)
Std 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 inch
(lbs)
17
35
52
66
93
160
240
410
650
Weight for Each Additional 1 inch of
Raise (lbs)
.33
.85
1.4
1.5
2.6
2.5
3.7
5.5
6.5
* 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.
