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.
- Aluminum-bronze worm gear
- Stainless steel input shaft
Main Components List
| Part name |
Material |
| Cover |
Aluminum alloy |
| Housing |
Aluminum alloy |
| Worm gear/ Quadrant |
Ductile Iron |
| Input shaft |
Protected Steel |
| Position indicator |
Polyamide66 |
Main Technical Parameter
| Model |
Gear ratio |
Rating input(Nm) |
Rating output(Nm) |
Hand-wheel |
| SD-10 |
40:1 |
16.5 |
150 |
100 |
| SD-15 |
37:1 |
25 |
250 |
150 |
| SD-50 |
45:1 |
55 |
750 |
300 |
| SD-120 |
40:1 |
100 |
1200 |
400 |
- Lightweight aluminium die-cast alloy (ACD 12) casing
- IP65 graded protection
- Nickel-phosphorus plated input shaft
- NBR sealing materials
- Suitable for -20℃~120℃ working conditions
To ensure reliable gearbox operation, the maintenance instructions included in this manual must be observed.
-
1
After the commissioning is completed, it is recommended that to perform a test run every six months;
-
2
Check the gearbox operation record for this cycle to see if there is any abnormality record.
-
3
Check the gearbox for leaks.
-
4
Check the bolts of the gearbox to the flange on the valve.
-
5
Check all fastening bolts on the gearbox.
-
6
Check the accuracy of the gearbox position indicator and tightening of limit adjustment bolt (If the gearbox used in frequent vibration circumstance, it is recommended that checking the condition in shorter term).
Frequently Asked Questions (FAQ)
How do I operate the valve using the hand-wheel?
The valve can be closed by turning the hand-wheel clockwise and opened by turning the hand-wheel counterclockwise.
What materials are used for the key components of the gear operator?
The cover and housing are made of aluminum alloy, the worm gear/quadrant is made of ductile iron, the input shaft is made of protected steel, and the position indicator is made of Polyamide66.
What are the environmental protection and temperature limits of this casing?
The gearbox features IP65 graded protection and NBR sealing materials, making it suitable for working conditions ranging from -20℃ to 120℃.
What models are available and what are their rating outputs?
Available models include SD-10 (150 Nm rating output), SD-15 (250 Nm), SD-50 (750 Nm), and SD-120 (1200 Nm).
How often should a test run and maintenance be performed?
After the commissioning is completed, it is recommended to perform a test run every six months. Regular checkups should be conducted on operation records, leakage status, and all connection and fastening bolts.
What adjustments should be made in vibration-heavy environments?
If the gearbox is used under frequent vibration conditions, it is recommended to check the accuracy of the position indicator and the tightness of the limit adjustment bolt in shorter terms.
