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Flow Control -   DYNATORQUE Partial-Turn Worm Gear Operators (90-180 Deg)

 
All operators in this series are Commercial Grade, have worm gearing, and have positive stops field adjustable from 0 to 180 degrees. Operators listed have bores, keyways, and mounting dimensions as listed on the individual operator envelope dimensional drawings. Operators are assembled in position II (clockwise input results in clockwise output), and have one shop coat of black primer. Operator pricing does not include hand wheels. 
 
Materials
Unit housings and covers are cast iron, worm wheels are ductile iron with the exception of the DT3 and DT7 which are powdered metal, worms are heat-treated carbon steel, input shafts are carbon steel with yellow zinc coating, shaft and worm seals are Buna-N rubber, housing to cover seals are styrene butadiene, bushings are oil impregnated copper nickel steel alloy, and stop parts are carbon steel.
  
Model
Unit Wgt. LBS.
Max. Output Torque Lb.-In.
Gear Ratio
Turns for 180 Deg.
Std. Output Bore
Std. Key Size
Sq.
Std. Mounting Pattern
 
Mech. Adv.
HDW Size
Inches
Approx Rim Pull Lbs.
Qty. & Size
Bolt Circle
DT3
7
4,500
30:1
15
1.000
.250
(4)3/8-16
3.250
8.10
14
80
19
8,000
30:1
15
1.750
.375
(4)1/2-13
5.000
8.10
24
82
26
16,000
57:1
28.50
2.000
.375
(4)1/2-13
4.921
13.68
30
78
33
16,000
44:1
22
2.750
.250
(4)5/8-11
6.000
11.44
36
77
34
26,000
60:1
30
2.500
.500
(4)5-8-11
5.512
22.5
30
77
78
36,000
53:1
26.50
3.250
.750
(4)3-4-10
6.496
19.00
36
105
105
50,000
212:1
106
3.250
.750
(4)3/4-10
6.496
60.80
20
80
DT54*
108
63,000
318:1
159
3.250
.750
(4)3/4-10
6.496
91.20
18
77
 
*Indicates units with spur assist.
Notes:
 
1. Handwheels listed are recommended sizes to produce full rated torque with the rim effort listed. The formulas listed below will assist you in determining alternate handwheels sizes and rim pull requirements based on your application. 
 
To Find: Handwheel diameter for given output torque at a given rim effort.
Divide the output torque by the mechanical advantage and multiply the result by 2.
Then divide this result by the handwheel rim effort.
 
To Find: Rim effort for a given output torque with a given handwheel diameter.
Divide the output torque by the mechanical advantage and multiply the result by 2.
Then divide this result by the handwheel diameter. 
 
Note:  Handwheels are not included as part of the operator part list or price. 
 
2. Bore, keyways, and mounting patterns listed are for Cameron's standards. Please consult factory for special bore treatments, costs, and deliveries.
 
3. Standard mounting patterns on the DT3 through the DT54 are (4) tapped holes straddling centerline at 45 degrees.  
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