Working together with our manufacturing partners, EMAC continuously collects all useful information, tips, and other technical literature, such as tips on product design, tips on product selection, and shares other technical information. In the meantime, EMAC also invested in different kinds of testing to verify the uncertainty of products, such as the impact on the engine power losses of modifying the dry-type engine exhaust system into a water-cooled exhaust system. All this information is very useful for customers to choose the right products and design the products accordingly.
EMAC pays extreme attention to the new products, new applications, and product trends of our industry, to make sure that we follow up with the dynamic changes of the machinery industry. We collect the trends of products and technology development within the machinery industry. And our project case library can help all customers to find similar cases for most applications, or help customers to find an EMAC’s customer in their country or region.
Technical Articles
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Selection and design concepts of different types of ship propellers
This paper explores the selection and design concepts for propellers of different types of ships, with a focus on analyzing the propeller design characteristics of common vessel types such as passenger ships, bulk carriers, fishing vessels, container ships, engineeri...
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Manufacturing Process of Liyang Propellers
This paper comprehensively introduces the complete manufacturing process of Liyang Propellers, with a focus on our innovative breakthroughs in casting technology, machining processes, and quality control. By adopting 12 patented technologies—including quick-drying sa...
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Liyang Propeller Quality Control System
This paper comprehensively introduces the distinctive three-level quality control system of Liyang Propellers, which comprises three rigorous pre-furnace inspections and ten precise finished product tests. By adopting internationally advanced testing equipment and sc...
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Introduction to Different Certificate-Level Propellers
This paper systematically introduces the quality control systems for different certification levels in ship propeller manufacturing, focusing on analyzing the differences among mainstream standards such as BV (Bureau Veritas), CCS (China Classification Society), and ...
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Introduction to Common Passenger Ship Packages
The design of passenger ship propellers requires comprehensive consideration of the vessel's speed, comfort, economy, and maneuverability. This paper details the key design parameters of passenger ship propellers (including diameter, disk area ratio, material, hub-to...
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Introduction to Common Fishing Vessel Packages
The design of fishing vessel propellers needs to balance propulsion efficiency, maneuverability, and special operational requirements.This paper systematically analyzes the key design parameters of fishing vessel propellers(including diameter, disk ratio, material, ...
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Introduction to Common Engineering Vessel Packages
The propeller design of engineering ships must meet the requirements of complex operating environments and special functional needs, and its design process entails the comprehensive consideration of multiple factors—including maneuverability, positioning capability, ...
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Introduction to Common Container Ship Shipping Packages
The design of container ship propellers must balance specific requirements, such as high speed, high efficiency, and route adaptability. This paper systematically analyzes the key design parameters and matching methods of modern container ship propellers, with a part...
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Introduction to Common Bulk Carrier Packages
The design of bulk carrier propellers requires comprehensive consideration of the vessel's economy, durability, and seaworthiness. This paper details the key design parameters of bulk carrier propellers (diameter, disk area ratio, material, hub-to-diameter ratio, rak...
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Introduction to Common Automobile Ferry Packages
As a key transportation tool for land-island connections, the propeller design of automobile ferries must balance special requirements such as speed, maneuverability, and economy.This paper systematically analyzes the key design parameters and matching methods of suc...
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Comparison of Propellers Made of Different Materials
Cast iron propellers and copper propellers each exhibit distinct characteristics in marine propulsion; however, from a comprehensive performance perspective, copper propellers hold significant advantages.
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A Comprehensive Overview of Different Yacht Propulsion Systems and Their Pros and Cons
This article delves into the seven mainstream yacht propulsion systems, namely direct shaft, inboard Z-drive, jet drive, surface drive, pod drive, outboard motor, and inboard/outboard drive (I/O). It thoroughly analyzes the structural characteristics and applicable s...
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How to Convert the CUMMINS K19-M3 Marine Engine from Dry Exhaust to Wet Exhaust?
Converting a CUMMINS K19-M3 marine engine from a dry to a wet exhaust system requires modifications to both the exhaust and cooling systems. The exhaust pipe replacement is straightforward, but the cooling system adaptation is more complex, involving thermostat remov...
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Vietnam | Pump – Electric Motor
EMAC's customer interview video of 2024, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer's company and factory, collecting all reviews and evaluations of EMAC...
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Indonesia | Construction – Customer Interview
EMAC's customer interview video of 2025, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer's company and factory, collecting all reviews and evaluations of EMAC...
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Thailand | Pump – Equipment Production
EMAC's customer interview video of 2023, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer's company and factory, collecting all reviews and evaluations of EMAC...
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Malaysia | Construction – Ground Support Equipment
EMAC's customer interview video of 2023, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer's company and factory, collecting all reviews and evaluations of EMAC...
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How to change the mechanical gearbox to electric control?
Changing the marine gearbox from a traditional mechanical control system to an electronic control system can significantly improve the automation level, accuracy and reliability of the system. The modification process includes the evaluation of the existing mechanica...
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Leader in Excellent Marine Gearboxes
Marine gearboxes, as special gear transmission devices for ships, play a key role in ship power systems. This article introduces the various types and functions of marine gearboxes, including gearboxes for work ships, high-speed ships, adjustable-pitch ships, and eng...
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Thailand | Pump – Thailand Engineering Company Interview
"EMAC’s customer interview video of 2023, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer’s company and factory, collecting all reviews and evaluations of EMAC,...
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Indonesia | Marine – Indonesia Shipyard Interview
EMAC's customer interview video of 2023, EMAC finished a series of customer interview with 10 different business partners from different countries and regions, most of videos are took at customer's company and factory, collecting all reviews and evaluations of EMAC, ...
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How to Change The Gear Ratio of GWC49.54
SeaMac provide complete propulsion system and power system for all kinds of ships all around the world. Mainly including marine engine, gearbox, shaft, propeller, marine genset, electric control lever system and other marine accessories. We also provide full life cyc...
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Gear Grinding Processing, Ensuring Accuracy and Reliability
High-quality gears play a vital role in the mechanical field. The quality of gears depends on the accuracy and reliability of their processing technology. Gear grinding is a key processing method that can ensure the accuracy and reliability of gears.
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Standard Gear Processing, Key Processes Promote Development
The accuracy and quality of standard gears are critical to the performance of mechanical equipment. In the field of gear processing, standard gear processing technology is a key process to achieve efficient production and quality assurance.
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Customized Cylindrical Iinear Gears to Meet Special Needs
Cylindrical linear gears are a common gear type that are widely used in various industries. Unlike traditional cylindrical gears that use a rotating axis, cylindrical linear gears move in a linear direction.
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Plastic gear processing, common solutions
Plastic gears are a common mechanical transmission device used in equipment and machinery in various industries. Compared with metal gears, plastic gears have the advantages of light weight, low noise, and good wear resistance.
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Effect of Conduits on Performance of Duct Propeller
Since its introduction, the catheter thruster has been widely promotion and application. The most important feature of propellers is their high efficiency under heavy load, so they are especially suitable for trawlers in fishery production.
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Application of Gears in Gear Reducers
Many times mechanical equipment does not need to rotate too fast, but needs more power. The gear reducer takes high-speed running power, meshes it with the gears on the input shaft of the reducer, and then outputs it to the large gear to achieve reduction.
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Even If the Gear is Broken, It Can be Repaired. Let’s Take a Look.
If you encounter a broken gear, don’t throw it away first. Let’s see how the master craftsman can repair it perfectly. Repair broken gears: trim, reinforce, seal with plasticine, fill with candles, solidify, clean, polish to get perfect gears.
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Transmission Gears, the Source of Power for Precise Rotation
As an important part of the mechanical transmission system, transmission gears play a key role in transmitting rotational force and converting rotational speed. Achieve ideal matching of power transmission and speed.
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Precision Pinions, the Power of High-Precision Manufacturing
In the modern machinery industry, precision pinions, as an important part of the mechanical transmission system, undertake key functions such as speed conversion, torque transmission and motion control. This article will introduce you to the relevant information.
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Application of Precision Spur Gears in High Efficiency Transmission
In the modern machinery manufacturing industry, precision straight wheels are widely used in various high-efficiency transmission systems. This article will introduce you to the relevant knowledge and applications of precision spur gears.
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Precision Gears the Core Component of Efficient Transmission
Precision gears are the core components of mechanical transmission systems, and their quality and performance directly affect the working efficiency and reliability of the entire device.
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Precision Bevel Gear Processing Technology
As an important transmission device, bevel gears play an important role in the industrial field. In order to ensure its reliability and high efficiency, precision bevel gear processing technology came into being.
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Requirements for Grinding Parts in Grinding Gear Processing
In order to meet the requirements of the gear processing industry for manufacturing precision, production efficiency, clean production, and quality improvement, the following development trends have emerged in gear machine tools and gear technology. Due to the CNC co...
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Purpose of Gear Diagnostics and Rack Mesh Characteristics
The application of gears in transmission appeared very early. More than 300 BC, the ancient Greek philosopher Aristotle explained the problem of using bronze or cast iron gears to transmit rotary motion in "Mechanical Problems". A complete set of wheel trains has bee...
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The Use of Transmission Gear Requires the Selection of Processing Materials
Gears are important parts of machines and instruments, and the accuracy of gears affects the quality of the entire machine or instrument to a certain extent. Due to the complex tooth shape and many parameters, the evaluation of gear accuracy is more complicated.
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How to Achieve Non-grinding Tooth Roots?
Gears can be classified according to tooth shape, gear shape, tooth line shape, surface where the teeth are located, and manufacturing methods. The tooth shape of the gear includes tooth profile curve, pressure angle, tooth height and displacement. Involute gears are...
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The Method of Gear Processing Forging and Forming to Reduce Damage
Usually, the bevel gears of larger specifications are formed on special large-tonnage hydraulic block presses, while the bevel gears of smaller sizes are usually formed on ordinary cold forging presses with special block dies. The latter method has the characteristic...
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Increased Efficiency and Precision: Gear Production with Hobbing
When it comes to gear manufacturing, speed and precision are of the essence. The ability to produce gears quickly while maintaining impeccable precision offers gear manufacturers the opportunity to produce parts for a variety of applications. Gear hobbing is a gear m...
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Classification of Gear Accuracy
The gear accuracy is mainly to control the accuracy of the transmission between the gears during the operation of the gears, such as: the stability of the transmission, the fluctuation of the instantaneous speed, if there is an alternating reverse operation, whether ...
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The Importance of Heat Treatment in Gear Processing
The basic gear processing method is gear processing. However, in addition to gear processing, there are other ways to make gears. According to different materials, their methods are also different. The quenching and tempering treatment of gears is mainly carried out ...
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Several Different Gear Processing Methods
How many gear processing methods do you know? Next, we will learn together the following three most commonly used gear processing methods, which are gear hobbing, gear shaping and pulling pin processing.
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Some Technical Knowledge about Gear
A gear is a very common mechanical transmission element whose function is to convert the rotational motion of an engine or electric motor into another form of motion. Gears are not only widely used in various mechanical equipment, but also play a vital role in vehicl...
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Maintenance of Marine Gearbox
The maintenance of marine gearbox is very important, which can effectively prolong its service life and avoid failures and accidents.Do you know how to maintain marine gearboxes?
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Advance Group Launched a New Wind Power Pitch Box
Good news came from Shaoxing Qianjin Company that a set of pitch boxes applied to vertical wind power generation platforms was successfully trial-produced. This success provided imagination for the company to develop overseas markets through technical cooperation in ...
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The Transfer Case of Special Vehicles was Successfully Accepted
A certain type of transfer case prototype trialmanufactured by the Design and Testing Institute of Hangzhou Advance Gear Group Technology Center successfully passed the factory acceptance review and was delivered to the customer.
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The new products of Hangzhou Advance Gear Group passed the appraisal
Entrusted by the Department of Economy and Information Technology of Zhejiang Province, the Xiaoshan District Economic and Information Bureau organized a provincial-level industrial new product appraisal and acceptance meeting of Hangzhou Gear Group, and evaluated th...
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The super-large GW series marine gearbox were successfully produced
High torque, low noise! The first set of a certain type of marine gearbox of the GW series independently developed by the marine product research and development team of Hanghzou Advance Group Corporation was grandly delivered. It is reported that this type of marine...
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The automatic transmission of HAECO was successfully produced
The automatic transmission of harbor machine independently developed by Hangteeth Group was successfully produced. From design to delivery, the relevant personnel of the company went all out to deliver a bright report card, laying a solid foundation for Hangteeth eng...
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Industrial Economy is Expected to Rebound and Improve
March 5, in the 14th National People's Congress meeting "minister channel", Minister of Industry and Information Technology Jin Zhuanglong said that the industrial economy is expected to rebound this year to good confidence.Jin Zhuanglong said, 2022 national economic...
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Advance ZJV1800 Gearbox Successfully Produced on Trial!
The ZJV1800 gearbox for marine working platform ships, which was produced and manufactured by the high-powered factory for the first time, was recently sent to the user unit. The main drive of this product adopts one level of spiral bevel gear transmission structure...
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Another “Advance” Brand High Power New Product Will Sail to the Deep Sea
Not long ago, the "HC869 stern slip trawler" built by Shandong Huanghai Shipyard completed the mooring test and performance test, and the test result was good. This means that the new HCT2000 type marine gearbox and 4LZF1100 clutch splitting box of ...
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20,000KW High Speed Box HGS780 Trial Production Success!
The trial production of 20,000KW high-speed gearbox HGS780 of Hangteeth Group Company was successful. HGS780 is another high-speed gearbox of Hangteeth, with input speed of 1500rpm, output speed of 3000rpm and rated power of 20000KW, adopting herringbone...
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Major Science and Technology Project YH350 R&D Passed Acceptance
On July 19, 2013, the district science and technology bureau organized relevant experts to accept the major science and technology project "YH350 hydraulic transmission research and development (2011102)" undertaken by Hangzhou Gear and agreed to pass...
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High-speed Box Project of Hangzhou Gear Group was Successfully Developed!
At the end of June 2019, a high-speed box project of Linjiang Branch of Hangzhou Gear Group successfully passed the mechanical performance test and type test, and the indicators successfully reached the design requirements, which was fully affirmed by the...
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HCAM303 Tilting Lightweight High Speed Gearbox Successfully Developed
The HCAM303 type marine gearbox designed by the Ship Research Institute of Technology Center and tested by the Testing Institute passed the factory test successfully on March 16 and was sent to the shipyard by special truck that night. and sent to the shipyard in the...
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The First Hybrid River Vessel Equipped with “Advance” Gearbox
Recently, the first domestic oil-gas-electric hybrid ship "New Yangtze 26007" equipped with Hang Gear's "Advance" hybrid power input marine gearbox successfully completed its trial voyage. The successful trial voyage of this vessel provides a powerful reference for t...
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The Frist Marine Low-speed Engine Gearbox Order!
Recently, Hangzhou Advance Gearbox Group Co., Ltd. successfully signed a contract for reduction gearboxes for low-speed engines for 46,000-ton bulk carriers, marking a breakthrough for Hang Gear Group in the support of...
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J2H09 Reducer was Successfully Developed and Passed Acceptance
The prototype of J2H09 reducer designed by the Industrial Institute of Technology Center and tested by the Testing Institute successfully passed the factory quality evaluation on July 14 and was delivered on the same day.J2H09 type reducer has strict requirements on ...
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From 7% to 30%! Major breakthrough in the field of large LNG vessels!
In 2022, the global newbuilding market for large liquefied natural gas (LNG) carriers is showing an unprecedented "blowout" situation. As the national team of China's shipbuilding industry, China Shipbuilding Group Corporation gave...
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Blades Provide Chinese Ship Solutions for Offshore Wind Power
December 24, China Shipbuilding Seven25 Shuangrui wind power in Jiangsu Yancheng base ushered in the world's longest SR260 blade, the introduction of this blade, will continue to contribute strongly to the offshore wind power China Shipbuilding Shuangrui...
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The New Transmission System Has Been Successfully Trial-produced
Golden autumn valiant, hang gear group shaoxing forward company came to good news, the first set of application in large tractor PTL220 transmission system trial production success. This success broke the monopoly of large foreign companies in China...
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Dual-Machine And Vehicle Marine Gearbox Passed Acceptance
Recently, the 2GWH9250 high-power marine gearbox designed and manufactured by Hangzhou Gear Group Co., Ltd. has been jointly reviewed and tested by representatives of the Beihai Branch of the State Oceanic Administration...
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Gearbox 120B Installation and Test Run
Marine gearbox model 120B performs the duties of ahead and astern, engaging and disengaging as well as reduction of speed. It can be coupled with various diesels with applicable torque to form a complete power unit for marine purpose...
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Guarantee Production, Hangzhou Advance is in Action!
The temperature in the heat treatment workshop reaches 50 degrees, and they operate production in strict accordance with the procedures and plans under the heat wave. To prevent burns, also wear thick, long-sleeved factory clothes. We applaud...
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Advance HCT1400P Marine Gearbox Successfully Launched
n order to meet customer requirements, relying on the company's more than 60 years of technology accumulation, Hangzhou Gear Group overcomes difficulties such as complex working conditions and short production cycles of the gearbox, and worked...
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A Egypt’s | Marine – A Egypt’s Company Feedback.
You can count on EMAC in trems of commitment & quality. We are looking forward to make very good business with EMAC in the field of diesel engine, gearbox and spare parts.Since the year of 2021, we start business relationship with EMAC and they are the first Chinese ...
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Malaysia | Marine – Feedback from Safari Boat Operators
We were satisfied with EMAC, and happy to having them as our supplier, our boat has been operated for more than 5 years now, both propulsion system and power system from EMAC are working perfectly. We do happy with the good quality of products from EMAC, the stabilit...
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Asean | Marine – Asean Company’s Feedback
We are a marine equipments packager company in Asean, estbalished in 2007. We packaged marine generator sets, marine propulsion system, side thruster, CPP propeller system, azimuth thruster, fuel and oil purifiers , engine electronic control system etc...
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Common Problems and Solutions in The Use of Lubricating Oil
What kind of lubricating oil is used for automobile engines is clearly required in the Cummins engine technical manual and should be selected according to the requirements. However, in practice, you may not be able to buy suitable oil. In this case, lubricating oil w...
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USA | Construction – A USA Company’s Feedback
EMAC company till now, and EMAC provides us a very good support, no matter pre-sales support or after-sales support. They have deep network of power system manufacturers in China, and ensuring them the strong ability of giving multiple brands options, we are happy to...
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What Matters should Pay Attention to the Valve Installation on Diesel Engine?
The performance and sealing of diesel generator set are influenced by the valve, which is one of the important parts of generator sets. Under strong mechanical loading and high temperature corrosion, all sorts of valve problems may appear, thus correct valve installa...
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LNG(II)
Natural gas is high quality, efficient, clean energy, liquefied natural gas (LNG) can be like oil safe and convenient storage and transportation, the development of liquefied natural gas (LNG) technology, improved the natural gas in the global competitive.As “environ...
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LNG(I)
Natural gas is high quality, efficient, clean energy, liquefied natural gas (LNG) can be like oil safe and convenient storage and transportation, the development of liquefied natural gas (LNG) technology, improved the natural gas in the global competitive.As “environ...
