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Flow Control -   DYNATORQUE Declutchable Manual Override Worm Gear Actuators - Series SD

Features 
DYNATORQUE™ Sandwich Declutch Operator is suited for applications where maximum valve torque ratings have been accurately calculated. All units have been designed to withstand loads far in excess of their rated torques. Operators in this category are totally enclosed, weatherproof and permanently lubricated. Units are suitable for use in all handwheel applications with DYNATORQUE chainwheel adapters. The declutch mechanism is designed to mount between the valve and its primary driving mechanism. The declutch locks in both the engaged and disengaged positions.
 
Materials
Unit housing and covers are cast iron, worms are heat-treated carbon steel, worm wheels are cast ductile iron, input shafts are carbon steel with yellow zinc plating, shaft and worm wheel seals are Buna-N rubber, declutch handles and bushings are stainless steel, housing to cover seals are Buna-N, bushings are oil impregnated copper nickel steel alloy. Drive couplings and drive coupling key connections are made of 1018 steel.

 

Model
Total Wgt. Lbs.
Output Torque Lbs.-in
Gear
Ratio
Turns
For 90 Deg.
Std. Output Bore
Std. Keyway Size
Sq.
Std. Mounting Pattern
Mech. Adv.
Hdw. Size
Rim Pull Lbs.
Qty. & Size
BCD
20
3,000
30:1
7.5
1.250”
.25x.188
(4) 5/16-18
2.756
8.10
10”
74
28
7,000
48:1
12
1.750”
.375
(4) 3/8-16
4.016
12.96
14”
77
45
12,000
57:1
14.25
2.000”
.375
(4) 1/2-13
4.921
13.68
18”
95
62
21,000
60:1
15
2.500”
.500
(4) 5/8-11
5.512
13.20
24”
133
130
36,000
53:1
13.25
3.250”
.750
(4) 3/4-10
6.496
13.25
36”
150
168
50,000
212:1
53
3.250”
.750
(4) 3/4-10
6.496
34.45
36”
80
163
63,000
318:1
79.5
3.250”
.750
(4) 3/4-10
6.496
51.68
30”
81
268
90,000
240:1
60
4.000”
1.00
(8) 5/8-11
10.00
49.92
36”
100
271
140,000
360:1
90
4.000”
1.00
(8) 5/8-11
10.00
78.00
36”
100
 
Notes:

1. The DT50SD and DT90SD have a 4:1 spur assist. DT54SD and DT140SD have a 6:1 spur assist.

2. Handwheels listed are recommended sizes to produce full rated torque with rim effort listed.

3. Bores, keyways, and mounting patterns listed are for Cameron’s standard units. Please consult factory for special bore treatments, costs, and deliveries.

4. Standard mounting patterns on all units are per ISO 5211 specifications. 
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