YJ-SD series quarter-turn worm gearbox suitable for ball valves, butterfly valves, plug,etc.
YJ-SDseries quarter-turn worm gearboxes use worm and worm wheel revolute pairs, with high performance tapered roller bearing assembled on both ends of the worm shaft. It ensures the thrust requirement during rotation. It's in high mechanical efficiency, easy to operate and has reliable self-locking function.
These gear operators are well suited for applications in waterworks, chemical, power, HVAC and most general industrial applications.
The flange connecting to valve is according to ISO5211.
Product Characters:
Totally enclosed gearing
Grease filled for longer life
Comprehensive ratios for different applications
Inherently self-locking gearing
High efficient tapered roller bearing
Adjustable stopper (± 5°)
Standard protection grade is IP65 (IP67, IP68 optional)
