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Machine Screw Actuators (Metric) |
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Duff-Norton Metric Actuators are manufactured to the same
high quality stan-dards and include all of the same features and benefits as the
standard line ofactuators while incorporating the following features:
- Load Capacities in Tonnes
- Mounting Dimensions in millimeters
- Metric screw diameters with trapezoidal threads (machine
screw actuators)
- Metric shaft and keyway sizes per ISO recommended
standards
- All metric fasteners on machine screw units
- Metric bolt centers
- Other sizes and models available, contact Duff-Norton
for more information
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Machine Screw Actuator Performance Specifications (Metric) |
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.
Numeric Ratio – is frequently chosen for applications requiring
fine adjustments, higher lifting capacities, lower speeds, the easy use of a handwheel,
self locking applications, and also offers the benefit of an even number of worm
input turns per inch of stroke.
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Capacity (kN)
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5
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10
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25
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50
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100
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150
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200
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Lifting Screw
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Diameter (mm)
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16
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20
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30
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38
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52
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58
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65
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Lead (mm)
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3
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5
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6
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9
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12
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12
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12
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Type
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Metric Trapezoidal
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Metric Trapezoidal
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Metric Trapezoidal
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Metric Trapezoidal
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Metric Trapezoidal
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Metric Trapezoidal
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Metric Trapezoidal
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Worm Gear Ratios
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Std.
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5:1
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5:1
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6:1
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6:1
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8:1
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8:1
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8:1
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Optional No. 1
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—
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20:1
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24:1
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24:1
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24:1
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24:1
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24:1
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Optional No. 2
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—
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—
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12:1
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12:1
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—
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—
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—
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Travel per Worm Turn (mm)
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Std.
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0.60
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1.00
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1.00
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1.50
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1.50
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1.50
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1.50
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Optional No. 1
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—
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0.25
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0.25
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0.38
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0.50
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0.50
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0.50
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Optional No. 2
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—
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—
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0.50
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0.75
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—
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—
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—
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Worm Torque at No Load (N-m)
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Std.
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0.23
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0.56
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0.56
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1.13
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2.26
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2.26
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3.39
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Optional No. 1
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—
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0.56
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0.56
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1.13
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2.26
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2.26
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3.39
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Optional No. 2
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—
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—
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0.56
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1.13
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—
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—
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—
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Maximum Input Power (kW)
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Std.
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0.25
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0.37
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1.49
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2.98
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3.73
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3.73
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3.73
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Optional No. 1
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—
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0.19
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0.37
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0.56
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1.12
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1.12
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1.12
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Optional No. 2
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—
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—
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0.56
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1.49
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—
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—
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—
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Worm Torque at Full Load (N-m)
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Std.
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2.83
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7.53
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21.15
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56.78
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117.09
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189.17
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275.44
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Optional No. 1
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—
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3.69
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9.81
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27.06
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63.17
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101.40
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147.70
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Optional No. 2
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—
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—
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13.46
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36.65
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—
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