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Flow Control -   DYNATORQUE Multi-Turn Bevel Gear Operators: Series BG

Features
DYNATORQUE™ Bevel geared operators are suited for applications where valve thrust and torque have been accurately calculated. All units have been designed to withstand loads far in excess of the rated thrusts and torques. Actuators in this category are totally enclosed, weather-proof, and permanently lubricated. Units are suitable for use in all handwheel and chainwheel applications.

Materials
Unit housings, retainers, bevel gears and pinions are cast ductile iron (exception BG-4, bevel gear and pinion are 8620 steel); input shafts are carbon steel with yellow zinc coating, seals are Buna-N rubber, gaskets are impregnated styrene butadiene.
  
 

Model
Unit
Wgt.
Lbs.
Max.
Output
Torque
Lb.-Ft.
Max.
Thrust
Lbs.
Gear
Ratio
Mech.
Adv.
Mounting
Bolt
Size
and Qty.
Std.
Mtg.
Bolt
Circle
Optional
Mounting
Bolt
Circles
26
625
22,000
3:1
2.55
(4)5/8-11
5.512
3/8-16(4.016)-5/8-11(6.000)
60
625
22,000
12:1
8.16
(4)5/8-11
5.512
3/8-16(4.016)-5/8-11(6.000)
83
1,600
30,000
4:1
3.4
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
83
1,600
30,000
8:1
6.12
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
115
1,600
30,000
16:1
10.88
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
119
1,600
30,000
24:1
16.32
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
117
1,600
30,000
32:1
19.58
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
BG426
117
1,600
30,000
48:1
29.38
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
83
2,300
80,000
4:1
3.4
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
83
2,300
80,000
8:1
6.12
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
115
2,300
80,000
16:1
10.88
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
119
2,300
80,000
24:1
16.32
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
117
2,300
80,000
32:1
19.58
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
BG426GT
117
2,300
80,000
48:1
29.38
(8)1/2-13
7.625
3/8-16(6.875)-5/8-11(10.180)
210
3,500
150,000
6:1
5.1
(8)3/4-10
11.732
5/8-11(10.00)-1 1/8-7(14.02)
212
3,500
150,000
12:1
9.18
(8)3/4-10
11.732
5/8-11(10.00)-1 1/8-7(14.02)
242
3,500
150,000
24:1
16.32
(8)3/4-10
11.732
5/8-11(10.00)-1 1/8-7(14.02)
242
3,500
150,000
36:1
24.48
(8)3/4-10
11.732
5/8-11(10.00)-1 1/8-7(14.02)
245
3,500
150,000
48:1
29.38
(8)3/4-10
11.732
5/8-11(10.00)-1 1/8-7(14.02)
245
3,500
150,000
72:1
44.11
(8)3/4-10
11.732
5/8-11(10.00)-1 1/8-7(14.02)
 
 
Bevel Gear Drivers
Manganese Bronze Stem Nuts (Style C)
These drivers are normally associated with rising stem gate valves. They are cast Manganese bronze (ASTM 86300) and are supplied by Cameron’s blank and include mounting hardware to the appropriate bevel gear output gear.

Model
Part Number
Maximum Bore
Minimum Bore
24-008
1.750"
.500"
24-006
2.500"
.750"
24-003
4.375"
2.000"


Lug Drivers (Style D)
These drivers are provided as a means of rotating custom yoke nut drivers. The lugs interface with the driver which has been adapted to the valves yoke nut. They are cast in ductile iron and are provided with mounting hardware to the appropriate bevel gear output gear.
Model
Part Number
24-009
24-007
24-002
 
The formulas listed below will assist you in determining alternate handwheel sizes and rim pull requirements.

To find: Handwheel diameter for a given output torque at a given rim effort.
Multiply the output torque by 12 to get the Torque in in-lbs.
Then Divide this result 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 with a given handwheel diameter.
Multiply the output torque by 12 to get the Torque in in-lbs.
Then divide this result by the mechanical advantage and multiply the result by 2.
Divide this result by the handwheel diameter.

Handwheels are sold as a separate item.
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