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Stainless Steel Machine Screw Actuators (Imperial)
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For harsh environments, Duff-Norton offers a complete line of
stainless steel machine screw actuators in standard and special configurations
for loads up to 100 tons. Duff-Norton Stainless Steel actuators incorporate all
of the same features as Duff-Norton's standard machine screw actuators, but can
be used in severe environments where other materials are inadequate. All
exposed surfaces are made of 316 stainless steel including the lifting screw,
housing, shell cap, worm and dust guard. Options include: anti-backlash and
keyed lifting screws for translating screw models.
Duff-Norton offers a complete line of both standard and custom
engineered stainless steel machine screw actuators for applications up to 100
tons.
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Corrosion resistant
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Stainless Steel Hardware
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Sealed gear cavity for to keep contaminants out
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Anti-backlash and Metric Machine Screw Actuators are also available
- contact our customer service personnel for more information
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Stainless Steel Machine Screw Actuator Performance Specifications (Imperial)
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Performance Table Instructions
When reviewing any Duff-Norton Actuator Performance Specifications Table,
as part of the process of selecting the best-suited actuator for your application,
there are several important worm-gear ratios to consider.
Standard
Ratio - is frequently chosen when higher speeds
and efficiency ratings are desired.
Optional Ratio(s) - is frequently chosen when
the application requires higher lifting capacities, lower speeds, or to ease the
use of a handwheel.
Capacity (Tons) - 17-4PH
Worm | 2 | 5 | 10 | 15 | 20 | 25 | 35 | 50 | 100 | Capacity (Tons) - 316 SS Worm | 0.67 | 1.66 | 3.33 | 5.00 | 6.66 | 8.33 | 11.66 | 16.66 | 33.33 | Lifting Screw | Diameter (in) | 1 | 1 1/2 | 2 | 2 1/4 | 2 1/2 | 3 | 3 3/4 | 4 1/2 | 6 | Pitch (in) | 0.250 | 0.375 | 0.500 | 0.500 | 0.500 | 0.666 | 0.666 | 0.666 | 0.750 | Type | ACME | ACME | ACME | ACME | ACME | ACME | ACME | Mod. Sq. | Mod. Sq. | Worm Gear Ratios | Std. | 6:1 | 6:1 | 8:1 | 8:1 | 8:1 | 10 2/3:1 | 10 2/3:1 | 10 2/3:1 | 12:1 | Optional No. 1 | 24:1 | 24:1 | 24:1 | 24:1 | 24:1 | 32:1 | 32:1 | 32:1 | 36:1 | Optional No. 2 | 12:1 | 12:1 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Turns of Worm for 1" Stroke | Std. | 24 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | Optional No. 1 | 96 | 64 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | Optional No. 2 | 48 | 32 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Worm Torque at No Load (in-lb) | Std. | 5 | 10 | 20 | 20 | 30 | 40 | 50 | 100 | 200 | Optional No. 1 | 5 | 10 | 20 | 20 | 30 | 40 | 50 | 100 | 200 | Optional No. 2 | 5 | 10 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Maximum Horsepower per Actuator | Std. | 2 | 4 | 5 | 5 | 5 | 8 | 8 | 15 | 25 | Optional No. 1 | 1/2 | 3/4 | 1 1/2 | 1 1/2 | 1 1/2 | 2 1/2 | 2 1/2 | 6 | 11 | Optional No. 2 | 3/4 | 2 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Worm Torque at Full load (in-lb) 17-4PH
Worm | Std. | 120 | 450 | 750 | 1430 | 2050 | 2700 | 4000 | 7500 | 16000 | Optional No. 1 | 50 | 185 | 400 | 820 | 1170 | 1700 | 2400 | 4200 | 8600 | Optional No. 2 | 75 | 275 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Worm Torque at Full load (in-lb) 316SS
Worm | Std. | 43 | 156 | 263 | 490 | 703 | 926 | 1366 | 2566 | 5466 | Optional No. 1 | 20 | 68 | 147 | 287 | 410 | 593 | 833 | 1466 | 3000 | Optional No. 2 | 28 | 98 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Efficiency Rating (%) | Std. | 20.4 | 21.2 | 25.2 | 20.3 | 18.9 | 17.9 | 17.0 | 12.9 | 12.1 | Optional No. 1 | 11.1 | 12.1 | 15.1 | 11.6 | 10.8 | 9.3 | 9.3 | 7.5 | 7.4 | Optional No. 2 | 15.6 | 16.8 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Weight with 6" Stroke (Raise) (lb) | 17 | 35 | 52 | 66 | 93 | 160 | 240 | 410 | 1200 | Weight per Additional 1'' Stroke (Raise)
(lb) | 0.3 | 0.9 | 1.4 | 1.5 | 2.6 | 2.5 | 3.7 | 5.5 | 9.0 | Key Torque (in-lb) | 153 | 581 | 1565 | 2527 | 3538 | 4665 | 8828 | 15697 | 39396 | Max Worm Speed at Full Load (rpm) | Std. | 1750 | 1615 | 1198 | 643 | 449 | 544 | 369 | 368 | 288 | Optional No. 1 | 1576 | 694 | 645 | 330 | 231 | 266 | 189 | 258 | 231 | Optional No. 2 | 1669 | 1286 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | Max Load at Full Horsepower and 1750 rpm
(lb) | Std. | 1333 | 3047 | 4386 | 3406 | 2972 | 4664 | 4220 | 5949 | 8865 | Optional No. 1 | 1156 | 972 | 1791 | 1276 | 843 | 1507 | 1192 | 2831 | 4671 | Optional No. 2 | 1258 | 2339 | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ | ¿ |
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*For loads from 25% to 100% of the actuator capacity,
torque requirements are approximately proportional to the load.
**Speed is a function of how the actuator is driven. Please see the "Motorized Performance"
verticle tab to your screen's left.
All actuator models can be supplied with
standard raises up to 24 inches. Special raises up to 20 feet are available
upon request. Standard inverted keyed models do not have a cover pipe (except
for the 1-ton and 75-ton models). Closed heights dimensions may increase for
actuators supplied with bellows boots. |