Gear Reducers for Pumping Unit
1. API-11E quality
2. OEM
3. Over 10 years of international trade to the USA, Russia, the Middle East, Australia and other countries
4. 1 hour to the nearest port
5. Enough stock and fast manufacture
Our main products include double-circular-arc cylindrical gears and involute gear. Pumping unit gear reducer models include 13HB, 26HB, 37HB, 48HB, 53HB, 73HB, 89HB, 114D, 160D, 228D, 320D, 456D, 640D, 912D and API228, API320, API456, API640, API912, etc. We also manufacture pumping units and pumping unit gear reducers parts.
| 13HB | 26HB | 37HB | 48HB | 53HB | 73HB | 89HB |
| 114D | 160D | 228D | 320D | 456D | 640D | 912D |
| API228 | API320 | API456 | API640 | API912 |
| Diameter (External Gears) |
Min: 1 mm Max: 800 mm |
| Diameter(Internal Gears) |
Min:1mm Max:500mm |
| Diametrical Pitch(External Gears) |
Min: 25 DP Max: 3 DP |
| Diametrical Pitch(Internal Gears) |
Min:25DP Max:4DP |
| Module(External Gears) |
Min: .1 Max: 8 |
| Length Hob(External Spur Gears) | Max: 300mm |
| Length Shaped(Internal Spur Gears) | Max:150mm |
| Length Shaped(External Spur Gears) | Max:300mm |
| Materials used |
Alloy Steel, Carbon Steel, Ductile Iron, Gray Cast Iron, Stainless Steel, etc |
| Helical Gear Cutting & Methods | Hobbing, Milling, Shaping, Shaving, Grinding |
| Heat Treatment Methods | Carburizing, Induction, Flame, Nitriding |
| Production Volume | Prototype, Low Volume, High Volume, Large Run,etc |
| Leading Time | 60~90 days |
Restructured from SINOPEC in 1997, Puyang Zhongshi Group Co., Ltd has 18 years manufacturing experience of petroleum machinery products till now, we have competitive prices of our main products of casing accessories likebow spring centralizer, solid rigid centralizer,float equipment, cementing plug etc.
We have 9 factories, more than 500 employees, and many kinds of production equipments.
We have certificates of API 5CT,6A,10D,11AX,11E, ISO 14001 and 9001.
With 10 years exporting experience,we have exported to more than 30 countries such as America,Canada,Russia,Venezuela,Columbia,Thailand,Indonesia ,UAE,Saudi Arabia,Kazakhstan etc.


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