Cast Steel Quarter-Turn Gearbox
Cast Steel Quarter-Turn Gearbox
Connect the bottom flange of the gear operator to the upper flange of the valve and slide the valve shaft into the hole on the worm gear. Tighten the flange bolt. The valve can be closed by turning the hand-wheel clockwise and opened by turning the hand-wheel counterclockwise. On the upper face of the gear operator, a position indicator and a position marking are mounted, through which the position of switch can be directly observed. The gear operator is also equipped with a mechanical limit screw, which can be adjusted and function to limit the position at the switch extreme position.
? WCB casing (LCB optional)
? Welded hand-wheel (300 or above)
? IP67 grade protection
? Rugged construction
? Nickel-plated input shaft, with more resistance to corrosion
? Ductile iron worm gear
? NBR sealing materials
? Suitable for -20℃?~ 120℃?working conditions
? Designed with a lock mechanism
? 304, 306, LCB, or LCC casing
? Limit switches
? IP68 grade protection
? Aluminum-bronze worm gear
? Stainless steel input shaft
? For high temperature up to 320℃
? For low temperature down to -46℃
Main Components List
| Part name | Material |
| Handwheel | A570 Gr.A |
| Cover | WCB |
| Housing | WCB |
| Worm | Carbon Steel |
| Left end cover | WCB |
| Worm gear/ Quadrant | Ductile Iron |
| Position indicator | SUS201 |
| Input shaft | Protected Steel |
Main Technical Parameter
|
Model |
Gear ratio |
Rating input(Nm) |
Rating output(Nm) |
Efficiency(%) |
Hand-wheel |
|
SGJ30 |
30:1 |
110 |
1000 |
27 |
300 |
|
SGJ50 |
50:1 |
100 |
1400 |
28 |
300 |
|
SGJ80 |
80:1 |
115 |
2500 |
27 |
400 |
|
SGJ70 |
70:1 |
200 |
4500 |
29 |
705 |
|
SGJ140 |
140:1 |
145 |
5600 |
28 |
600 |
|
Model |
Gear ratio |
Rating input(Nm) |
Rating output(Nm) |
Efficiency(%) |
Hand-wheel |
|
SJ320 |
320:1 |
90 |
7000 |
25 |
400 |
|
SJ330 |
330:1 |
150 |
12000 |
24 |
800 |
|
SJ410 |
410:1 |
160 |
17000 |
26 |
700 |
|
SJ520 |
520:1 |
165 |
23000 |
26 |
700 |
|
SJ560 |
1220:1 |
140 |
43000 |
25 |
800 |
|
SJ600 |
1422:1 |
160 |
60000 |
26 |
800 |
|
SJ720 |
1728:1 |
160 |
72000 |
26 |
800 |
