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RHW20PD4 double stage worm gear operator

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Ms. Linus li
No.6 Qingfeng Road, Dongou Industrial Zone, Yongjia County, Wenzhou City, Zhejiang Province, China
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RHW20PD4 double stage worm gear operator

Product Details:
Place of Origin: Wenzhou, China
Brand Name: Roysol
Model Number: RHW20PD4
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: Reasonable and negotiable
Packaging Details: Standard
Delivery Time: 10days after confirm the order
Payment Terms: T/T and negotiable
Supply Ability: 100000


RHW part turn worm gearboxes are applied to dampers, ball valves, butterfly valves and also other 90° quarter turn valves. RHW part turn worm gear operator has variety models of hand wheel for optional.


Model RHW20/PD4
Output Torque (N.m) 2000
Ratio 152:1
Input Torque   (N.m) 49
Standard Flange F12/F16
Optional Flange F10/F14
Max stem Diameter  (mm) Φ53
Input Shaft    (mm) Φ15
Handwheel   (mm) 280
Max stem Height (mm) 90
Reference weight without handwheel (kg) 22
Optional Round hole/ square hole/ special shaped hole
Operating temperature  -20℃ to +120℃   Specific requirements can be submitted
Protection grade IP67    Optional IP65/ IP68   
Painting color RAL5017 or Customization
Main Material  Housing: Ductile Casting Iron; Worm gear: Ductile Casting  Iron, Worm: steel 





Roysol RHW series Part-turn Gearboxes use worm and worm wheel revolute pairs, with high performance needle roller bearing assembled on both ends of the worm shaft. It ensures the thrust requirement during rotation. It’s in high mechanical efficiency withstands big torque, small size with compact design, and it’s also easy to operate and has reliable self-locking function



1.Precision casting ductile iron housing

2.Optional output torque, range up to 32000Nm

3.High efficient needle roller bearing

4.High strength steel input shaft

5.Stroke 0°- 90°( ±5°)

6.Compact structure

7.Grease filled for longer life

8.Adjustable stopper (±5°)

9.Good seal


Connect with valve

The flange connecting to valve is according to ENISO5210 or DIN3210(Customization)



Main Products

Worm gearbox, bevel gearbox, valve gear box,worm gear operator, worm gear actuator, valve worm gear, valve gear operator, valve gear actuator






Contact Us
Ms. Linus li
  • 86-0577-57765687
  • No.6 Qingfeng Road, Dongou Industrial Zone, Yongjia County, Wenzhou City, Zhejiang Province, China
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