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SDQ underground gearbox

STARD-GEAR
SDQ
Out of stock
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This series consists of six models, with transmission ratios ranging from 182:1 to 780:1 and torques from 1500NM to 15000NM.
The input stage is adjustable by 90° and can be operated by handwheel or T-stem. It is usually used for valves in underground pipe networks (such as butterfly valves, ball valves, etc.).

 
Operation and installation instructions
Connect the lower flange of the gear operating mechanism to the upper flange of the valve, and slide the valve shaft into the hole on the worm gear. Tighten the flange bolts. Turning the handwheel clockwise will close the valve, while turning it counterclockwise will open it. A position indicator and position mark are installed on the top of the gear operating mechanism. Through the position indicator, the position of the switch can be directly observed. The gear operating mechanism is also equipped with mechanical limit screws, which can be adjusted and limited at the switch limit position.


Product Features

Ductile iron housing
Protect the steel input shaft (stainless steel is optional
There are 6 models, with an output up to 15,000 Nm
Ductile iron worm gear
NBR sealing material
It is suitable for working conditions ranging from -20℃ to 120℃
Stroke :0-90°(adjustable within ±5°)
The input shaft and worm are integrated (with higher strength

Customized Options
High temperature up to +200℃
IP68 protection grade
Aluminum bronze worm gear
Low temperature to -46℃

Main Components List

Part name

Material

Handwheel

Welding handwheel

Input shaft

Carbon steel

Shell

Ductile iron

Worm gear

Carbon steel

Turbine

Ductile iron

Big cover

Ductile iron

Signpost

Cast iron

 

  

Main Technical Parameter

Model

Speed ratio

Rated inputNm

Rated outputNm

Efficiency&

Maximum valve stem diameterMax

The valve is connected to the flangeISO 5211

SDQ3

182:1

50

1500

16.5

 38

F10/F12

SDQ4

272:1

60

2500

15.3

 38

F14

SDQ5

352:1

85

5000

16.7

 60

F16

SDQ6

416:1

115

7500

15.7

 85

F25

SDQ7

502:1

120

9500

16

 100

F25

SDQ8

780:1

115

15000

16.7

 125

F30/F35

 

SDQ underground gearbox
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