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| Categories | Handwheel Gear Operator | 
|---|---|
| Brand Name: | Stard-gears | 
| Model Number: | SGJ | 
| Certification: | IP67 | 
| Place of Origin: | China | 
| MOQ: | 1 | 
| Price: | Negotiable | 
| Payment Terms: | D/P, T/T | 
| Supply Ability: | 2000 Pcs-6 weeks | 
| Delivery Time: | 20~30 work days | 
| Packaging Details: | Cartons or wooden cases | 
| Material: | cast steel ,WCB | 
| Protection class: | IP67~IP68 | 
| Operating temperature: | -20℃~120℃ | 
| Product name: | valve gearbox | 
Single Stage Handwheel Gear Operator Butterfly Gearbox With A Lock Mechanism
SGJ series partial-turn gear operators
This single-stage gear operator series with cast steel box is widely used in gas, oil, chemical plants, and nuclear power plants and for general industrial applications, with the torque ranging from 1000NM to 5600NM and the speed ratio from 30:1 to 140:1.
Instructions for Installation and Operation
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.
Product Features
Customization
| Part name | Material | 
| Welding Handwheel | Q235A/T700-2006 | 
| Cover | WCB GB/ T12229-2005 | 
| Housing | WCB GB/T12229-2005 | 
| Worm | 45GB/T699-1999 | 
| Left end cover | WCB GB/T12229-2005 | 
| Worm gear | QT500-7/GB1348-88 | 
| Cover | WCB GB/ T12229-2005 | 
| Indieator | Q235A/T700-2006 | 
| Gear wheel | 45GB/T699-1999 | 
| Gear shaft | 45GB/T699-1999 | 
| Gear box | WCB GB/ T12229-2005 | 
Main Technical Parameter
| Model | SGJ30 | SGJ50 | SGJ80 | SGJ70 | SGJ140 | 
| Gear ratio | 30:1 | 50:1 | 80:1 | 70:1 | 140:1 | 
| Maximum travel | 90° | 90° | 90° | 90° | 90° | 
| Limit adjust | ±5° | ±5° | ±5° | ±5° | ±5° | 
| Rating input | 110 | 100 | 115 | 200 | 145 | 
| Rating output | 1000 | 1400 | 2500 | 4500 | 5600 | 
| Efficiency | 30 | 28 | 27 | 31.8 | 28 | 
SGJ Series Valve Gearboxes
This single-stage transmission series with cast steel housing is
widely used in and for gas, oil, chemical plants, nuclear power
facilities, and general industrial-purposes.
- Dimensionally compact, highly efficient, and of one-piece worm
design
- Have IP65, IP67, and IP68 protection levels for option
- Optional housing materials including cast steel (WCB), 306, 304,
LCC, and LCB
Major Clients:CIRCOR ENERGY / EBRO



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