diesel engine G12V190PZL-1/3 and YOTFJ650/750/850 fluid coupling gearbox unit for the drilling mud pump
CNPC Power Equipment Company is in the scenic Changqing Development Zone, Jinan City, Shandong Province,. CNPC share was officially listed in Shenzhen Stock Exchange in October, 1996. The plant has 4,000 employees now, total assets of more than 3 billion yuan and possesses more than 2,000 pieces (sets) of main production equipment’s. has three big R & D production bases in Jinan of Shandong, Chengdu of Sichuan, and Tianjin respectively. Its core business is the development and production of combustion engine. Its business is also extended to compressor manufacture integration pry, hydraulic transmission device, gas integration device, electrical control device, etc,annual production capacity is 5,000 diesel engines and sales revenue is nearly 4 billion yuan. The plant was successively awarded the titles of “National Quality
Management Award”, “National Customer Satisfaction Enterprise”, and “Quality
Supplier of West-East Natural Gas Transmission” and so on, and passed the ISO9001 Quality System Certification, Classification Society Certification and Bureau Veritas Certification.
6. Performance features
6.1 The hydraulic coupling reverse reducing gear box has the following performance features
6.1.1 Easy for installation. Both diesel coupling set and drilling pump can be wholly hoisted respectively for installation.
6.1.2 Driving belt has no longer been used and no need to frequently adjust the tension of belt.
6.1.3 Having the function of clutch. When diesel engine is running, the coupling set can make smooth clutch on-off at any speed through oil feeding and draining of coupling without any impact and wear. It replaces the gas bag clutch and simplifies the drives parts.
6.1.4 Preventing torque overload. In case of the moment of output shaft increases suddenly, the coupling will have an increased slip by itself. Even when the output shaft brakes (or is seized), diesel engine is still able to operate without stopping so as to protect the engine, mud pump and coupling from being damaged.
6.1.5 Reliable operation and long service life. The coupling reverse gear box is a flexible transmission device with mineral oil as medium. It has no impact and wear during operating and clutching. At the same time, it can absorb the vibration from the engine and mud pump. Therefore, its operation reliability and service life are obviously higher than the mechanical transmission devices with no coupling. It increases the life of the engine and transmission system of 40%~60% and reduces pulsating vibration amplitude of mud pump of 50%.
6.1.6 Forced splash lubrication is used for both bearing and gear, and oil passages are designed in the casing for lubricating and cooling the gear end face and bearing to ensure their normal operation.
6.1.7 Oil pressure taper interference fit is used for the connection of the turbine shaft and output shaft of gear train with the inner hole of gear, with features of large transferring moment, long service life as well as reliable and safe operation.
6.1.8 Non-contact centrifugal seal is used for both the input and output shaft ends, which never wear and have long service life.
6.2 Mounting mode
Mode 1: Combined water cooled, connected with flange
The coupling reverse reducing gear box is combined water cooled. Its input end is connected to diesel engine with an elastomeric coupling(3) and both the coupling and engine are installed on the same common base, with features of reliable performance, compact design and easy to be moved and transported. It is the typical diesel coupling reverse set and also the main coupling reverse set recommended by
| Data of diesel engine | Engine model | Coupling model | Set model | Input power of coupling(kw) | Coupling efficiency(%) | ||
| Series 2012 | ge(g/kw.h) | N(r/min) | Ne(kw) | ||||
| 209 | 1200 | 735 | G12V190PZ L -1 | YOTFJ750-22FlshA | CO735F-1/22 | 695 | 95 |
| 1300 | 810 | G12V190PZ L -3 | YOTFJ750-25FlshA | CO810F-3/25 | 770 | ||
| 1500 | 900 | G12V190PZ L | YOTFJ750-33FlshA | CO900F/33 | 860 | ||
| Series 2008 | 209 | 1300 | 510 | G12V190PZ L -1 | YOTFJ750-20Flsh | CO510F-3/20 | 470 |
| Series2012 | 208 | 1500 | 1000 | G12V190PZL1 | YOTFJ750-30DDF | CO1000F/30 | 960 |
6. How is your workflow?
We can confirm the specification and specification first, and then sign the sales contract and the drawings. Once the drawings are confirmed, we will take photos for you to confirm that the goods are new and in shipment before shipment. Please pay the balance before the machine leaves the factory, and then we will ship the machine to Shanghai.
7. How to deal with product quality problems?
We provide 24-hour online service, we give 24 hours online
8. Can I be your agent in our country?
We are developing agents all over the world. You can sign agency agreements with us.
9. What is the warranty time of your products?
The warranty time is 12 months from the date of the commissioning. After the warranty, any questions and needs, please
How is your serve?
1. We will reply to your inquiry within two hours after receiving it, and arrange a special person to contact you. Please leave
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3. We will provide the most competitive price in the Chinese market according to the requirements of your bidding documents to ensure the successful completion of your bidding project, so please give us sufficient preparation time, preferably the latest bid closing date.




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Step 1
Payment and order readiness
Minimum order: 1 Units
Payment terms, specifications, and order details are confirmed before preparation begins.
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Step 2
Preparation
30 days
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Step 3
Packaging and dispatch
Packaging details are available on request.
Final packing, freight, and delivery dates are confirmed before dispatch.
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