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China factory Custom Large Marine Internal Combustion Engine, High Precision Transmission Spur Gear with Great quality

Product Description

Product Name: OEM/ODM Engine Gear

Engine Gear Manufacturing Plant of Xihu (West Lake) Dis.Feng Motor Corporation(DFM23)

Global OEM supply to CHINAMFG and Volvo worldwide.


Engine Gear Plant of DFM (DFM23 for short) was founded in 1969, which is a large production base for auto parts. We have perfect parts and components technology development capabilities thanks to our advantage of strong tool and R&D capability.

Staff: There are 795 employees in DFM23 and 156 of them are technical engineers.

Equipment:  The plant owns more than 852  machines, including 103 advanced machines which were imported.


Forging and machinining Equipment:

Quality Test Equipment:





Product Development Capability:

Strong technical strength for CHINAMFG system optimization design, noise reduction, strength check and so on.

Quick Response; R&D with Customer.                                                 

Full Quality Control; Self Design/ Self made tooling                


Informatization Technology Applied in Plant:

PMS & ERP & MES system come into service in March 2017.

Technical Patents/ Intellectual Property:

Now we own 12 patents.

New Technology Applications:

Anti-wear phosphating; Shot Peen; High speed Hobbing; High speed teeth grinding; Continuous heat treatment
Honing Hole; Hard turning; Inner hole and end-face grinding.


Gear Product Development Plan:


Global Supply to Cummins

We provide nearly 200 kinds of gears for CHINAMFG global 15 OEM plants & cooperative partners, 3 spare parts service center, products cover 2.8L-95L.

At present, we are sole supplier for 45L above heavy-duty engine gear; Provide optimized design proposal for CHINAMFG engine gear, participate in R&D and other technical support and comprehensive service ability.


We manufature according to customer’s drawings and requirements,

Type of Gears We can supply:

Gear Crankshaft / Gear Camshaft / Gear Fuel pump / Gear Air compressor / Gear from moving



20CrMnTiH, 20CrMo, 20MnCr5, SAE8620H, 17CrNiMo7-6


Weight(kg): 0.6-30


Size(mm): 50-360


Gear Precision: ISO6 Level

Here’s why our products stand out:
     1. Extensive Product Range: We offer a diverse selection of buses, school buses, andspecial purpose vehicles to cater to various transportation needs. Whether yourequire standard buses for public transport, specialized school buses withenhanced safety features, or custom-built special purpose vehicles for specificapplications, we have a solution to meet your requirements.
     2. Superior Quality and Reliability: Our vehicles are manufactured to the highestindustry standards, ensuring exceptional quality, reliability, and longevity. Wecollaborate with reputable manufacturers and conduct rigorous quality controlchecks to deliver products that exceed customer expectations. Our commitmentto CHINAMFG is reflected in every vehicle we offer.
     3. Cutting-Edge Technology: We incorporate advanced technologies andinnovations into our vehicles to enhance performance, efficiency, and safety.From fuel-efficient engines and intelligent control systems to state-of-the-art
safety features and eco-friendly designs, our products are at the forefront ofautomotive technology.
     4. Customization Options: We understand that every client has unique needs ancpreferences, Therefore, we provide customization options to tailor our vehiclesaccording to specific requirements. Whether it’s seating capacity, interiorconfigurations, accessibility features, or branding elements, we work closely withour clients to deliver personalized solutions.
    5. Focus on Safety: Safety is our top priority. Our school buses are designed withcomprehensive safety features, including reinforced structures, advanced brakincsystems, and integrated safety technologies. We prioritize passenger and driversafety to provide peace of mind for both educational institutions and parents.
   6. Exceptional After-Sales Service: Our commitment to customer satisfactionextends beyond the purchase. We provide reliable after-sales service andsupport, including spare parts availability, technical assistance, and maintenanceguidance. Our dedicated team ensures that our customers receive prompt andefficient service throughout the ownership lifecycle.




1. Q:Why choose you?
A:We are the specialized distributor authorized by the Xihu (West Lake) Dis.feng Motor Corporation (DFM), which headquartered in HangZhou, China. And the manufacturing plant of our special vehicle is military enterprise which attaches a greatest importance to the quality of the products and service.

2. Q:How to visit your factory ?
A:You will be welcomed here for factory inspection. It takes about 2 hours from ZheJiang or ZheJiang to HangZhou by air, or 3 hours by speed train from HangZhou to HangZhou.Online visit is also avaliable for you.

3. Q:How to pack the truck?
A:It will be waxed and shipped by bulk carrier, RORO ship or container.

4. Q:Could your company modify the standard product depends on my request? 
Yes. Our company is specialized in researching and designing various of special purpose vehicle and spare parts. We can provide any product according to your demand.

5. Q:Can I customize the painting and logo?
A:Yes,of course, we can paint the truck as your requirement.

6. Q:What’s your quality guanrantee or after sales service?
A: Our guarantee is 1 year, the key parts damage not caused by improper operation, it will free maintenance and replacement. And we also provide online support, Video technical support and spare parts available.


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Application: Motor, Electric Cars, Car
Hardness: Hardened Tooth Surface
Gear Position: Internal Gear
Manufacturing Method: Forging+Machining
Toothed Portion Shape: Spur Gear
Material: Forging Gear
US$ 80/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

How do you retrofit an existing mechanical system with internal gears?

Retrofitting an existing mechanical system with internal gears involves modifying or upgrading the system to incorporate internal gears for improved performance or functionality. Here’s a detailed explanation of the process involved in retrofitting an existing mechanical system with internal gears:

Retrofitting a mechanical system with internal gears requires careful planning, engineering analysis, and implementation. The specific steps may vary depending on the nature of the system and the intended objectives of the retrofit. Here is a general approach to retrofitting an existing mechanical system with internal gears:

  1. Evaluation of the Existing System: Begin by thoroughly evaluating the existing mechanical system. Understand its design, components, operating parameters, and limitations. Identify the specific areas where the introduction of internal gears can address the desired improvements, such as increased efficiency, torque capacity, or functionality.
  2. Feasibility Study and Design: Conduct a feasibility study to determine the viability of retrofitting internal gears into the system. Evaluate factors such as available space, compatibility of gear sizes and specifications, alignment requirements, and potential modifications needed for gear integration. Based on the study, develop a detailed design plan for incorporating internal gears into the existing system.
  3. Gear Selection and Sizing: Select suitable internal gears that meet the requirements of the retrofit. Consider factors such as gear ratio, torque capacity, tooth profile, material compatibility, and lubrication needs. Ensure that the selected gears are compatible with the existing system and can handle the expected loads and operating conditions.
  4. Modification of Components: Depending on the design and integration requirements, certain components of the existing system may need modification or adaptation to accommodate the internal gears. This could involve machining new mounting points, adjusting shaft positions, or modifying housing structures to ensure proper alignment and engagement of the gears.
  5. Fabrication or Procurement of Gears: Once the gear specifications are finalized, proceed with the fabrication or procurement of the internal gears. Ensure that the gears are manufactured to the required tolerances and quality standards. If custom gears are needed, work with a reputable gear manufacturer or machining facility to produce the gears.
  6. Installation and Integration: Install the internal gears into the retrofit system according to the design plan. Ensure proper alignment, engagement, and meshing of the gears. Pay attention to factors such as backlash, lubrication requirements, and any additional components or systems needed to support the gear integration.
  7. Testing and Validation: Conduct thorough testing and validation of the retrofit system with the newly integrated internal gears. Perform functional tests to verify the improved performance, efficiency, or functionality achieved through the retrofit. Monitor factors such as gear noise, vibration, temperature, and overall system operation to ensure satisfactory results.
  8. Documentation and Maintenance: Document the retrofit process, including design modifications, gear specifications, installation procedures, and testing results. This documentation will be useful for future reference, maintenance, and troubleshooting. Establish a maintenance plan to regularly inspect, lubricate, and service the internal gears to ensure their long-term performance and reliability.

It’s important to note that retrofitting an existing mechanical system with internal gears can be a complex task and may require expertise in gear design, mechanical engineering, and system integration. Engaging experienced professionals or consulting with gear manufacturers and engineering consultants can help ensure a successful retrofit.

Additionally, the feasibility and success of retrofitting depend on factors such as the nature of the existing system, available space, compatibility of components, and the specific objectives of the retrofit. A comprehensive analysis and careful planning are essential to determine the most appropriate approach and achieve the desired outcomes.

China factory Custom Large Marine Internal Combustion Engine, High Precision Transmission Spur Gear with Great qualityChina factory Custom Large Marine Internal Combustion Engine, High Precision Transmission Spur Gear with Great quality
editor by Dream 2024-04-30


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