2
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 impor-
tant to protect the screw with a boot. If your atmo-
sphere is corrosive it is important to specify a non-
corrosive material or finish. Duff-Norton can provide
stainless steel, nickel plated or epoxy coated actua-
tors. 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 con-
tact Duff-Norton at (800) 477-5002.
*
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.
Contents
Section I
General Information ................................................................................................................................................ 2
1-1.
General .................................................................................................................................................................... 2
1-2.
Applications ............................................................................................................................................................ 2
1-3.
Specifications .......................................................................................................................................................... 2
1-4
Important Precautions ............................................................................................................................................. 3
1-5.
Warranty and Warranty Repair ............................................................................................................................... 4
Section II
Maintenance ............................................................................................................................................................ 4
2-1.
Lubrication .............................................................................................................................................................. 4
2-2.
Rebuild Procedure .................................................................................................................................................. 4
2-3
Required Tools ........................................................................................................................................................ 4
2-4.
Disassembly ............................................................................................................................................................ 4
2-5.
Cleaning .................................................................................................................................................................. 5
2-6.
Inspection ................................................................................................................................................................ 5
2-7.
Assembly ................................................................................................................................................................ 5
2-8.
Anti-Backlash Nut Function ................................................................................................................................... 6
2-9.
Anti-Backlash Nut Adjustment ............................................................................................................................... 6
Section III
Illustrated Parts List ................................................................................................................................................ 6
3-1.
General ................................................................................................................................................................... 6
3-2.
Parts List ................................................................................................................................................................. 6
Figure 3-1.
Exploded Illustration .............................................................................................................................................. 7
1-3. Specifications
Table 1. 1800 (2000) and 9000 (10000) Series
Standard Actuator Upright
1802 & 9002
9005
9010
9015
9020
9025
9035
1850 & 9050
9075
Model No.
Inverted
1801 & 9001
9004
9009
9014
9019
9024
9034
1849 & 9049
9074
Special Actuator
Upright
2002 & 10002
10005
10010
10015
10020
10025
10035
2050 & 10050
10075
Model No.
Inverted
2001 & 10001
10004
10009
10014
10019
10024
10034
2049 & 10049
10074
Rated Load (tons)
2
5
1 0
1 5
2 0
2 5
3 5
5 0
7 5
Diameter of
1
1 1/2
2
2 1/4
2 1/2
3
3 3/4
4 1/2
5
Lifting Screw (inches)
.250 Pitch
.375 Pitch
.500 Pitch
.500 Pitch
.500 Pitch
.666 Pitch
.666 Pitch
.666 Pitch
.666 Pitch
Acme
Acme
Acme
Acme
Acme
Acme
Acme
Square
Square
Closed Height** (inches)
5 1/4
7
7 1/4
8
9 1/4
1 1
1 2
1 3
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
Std Ratio
2 4
1 6
1 6
1 6
1 6
1 6
1 6
1 6
1 6
For 1˝ Raise
Optional
9 6
6 4
4 8
4 8
4 8
4 8
4 8
4 8
4 8
Maximum H.P.
Std Ratio
2
4
5
5
5
8
8
1 5
1 5
Per Actuator
Optional
1/2
3/4
1 1/2
1 1/2
1 1/2
2 1/2
2 1/2
6
6
Torque at
Std Ratio
120
450
750
1,430
2,050
2,700
4,000
7,500
12,000
Full Load* (in-lbs)
Optional
5 0
185
400
820
1,170
1,200
2,400
4,200
6,600
Actuator Efficiency Std Ratio
23.2
22.1
23.7
20.2
18.8
18.7
15.8
13.8
12.4
Rating (%)
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)
1 7
3 5
5 2
6 6
9 3
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
