DYNATORQUE BG Multiturn Bevel Gear Operators | ProductsSLB

DYNATORQUE BG

Multiturn bevel-gear operators

Our DYNATORQUE BG multiturn bevel-gear operators provide smooth, even torque transmission for thrust and nonthrust applications such as gate, knife gate, pinch, sluice gate, or globe valves. These operators can also be used in almost any multiturn, right-angle application requiring mechanical advantage.

Gearbox housing is ductile iron. Bevel and pinion gears are investment-cast ductile iron bevel for smooth, continuous transmission of torque.

Optional stem nuts are available for direct threaded interfacing and lug drivers for existing valve yoke nuts.

  • 20 different frame and spur combinations provide output thrust from 22,000 to 150,000 lbf [98 to 667 kN] and torque output up to 3,500 lbf.ft [4,745 N.m]
  • Models BG3 and BG6 have standard ISO 5211 mounting patterns (optional patterns on request)
  • Gearbox housing of ductile iron
  • Investment-cast ductile iron bevel and pinion gears for smooth, continuous transmission of torque
  • Optional bronze stem nuts for direct threaded interfacing and lug drivers for existing valve yoke nuts
  • Motor mounts available for electric motor operation
DYNATORQUE Series BG Multiturn Bevel Gear Operators

Specifications

Model Unit Weight, lbm Max. Output Torque, lbf.ft Max.Thrust, lbf Gear Ratio Mech. Adv. Mounting Bolt
(Size and Qty.) 
Std. Mounting Min. Max.
BG3 26 625 22,000 3:1 2.55 (4)5/8-11 5.12 3/8-16(4.016) 5/8-11(6.000)
BG34 60 625 22,000 12:1 8.16 (4)5/8-11 5.12 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 blank by Cameron and include mounting hardware to the appropriate bevel gear output gear.

Model Part Number Max. Bore, in Min. Bore, in
BG3 Series 24-008 1.750 0.500
BG4 Series 24-006 2.500 0.750
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 output gear.

MODEL Part Number
BG3 Series 24-009
BG4 Series 24-007
BG6 Series 24-002

Handwheels are sold separately.


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