NOTE! For Certified Dimensions contact the Factory!   Data on this site is for information only.


Specifications For Multi-Turn Bevel Gear Operators: Series BG

Definition

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.

Construction

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.

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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

BG3

26

625

22,000

3:1

2.55

(4)5/8-11

5.512

3/8-16(4.016)-5/8-11(6.000)

BG34

60

625

22,000

12:1

8.16

(4)5/8-11

5.512

3/8-16(4.016)-5/8-11(6.000)

BG4

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)

BG42

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)

BG44

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)

BG46

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)

BG424

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)

BG4GT

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)

BG42GT

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)

BG44GT

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)

BG46GT

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)

BG424GT

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)

BG6

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)

BG62

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)

BG64

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)

BG66

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)

BG624

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)

BG626

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 DynaTorque blank and include mounting hardware to the appropriate bevel gear output gear.
   
Model Part Number Maximum Bore Minimum Bore
BG3 Series 24-008 1.750" .500"
BG4 Series 24-006 2.500" .750"
BG6 Series 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
BG3 Series 24-009
BG4 Series 24-007
BG6 Series 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.

To find: Rim Effort for a given output with a given handwheel diameter.

Handwheels are sold as a separate item in the handwheel section of your catalog.