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Sep 15, 2026 | Technical Articles | 0 comments

Marine Gearbox

Advance Medium-Low Duty Gearbox

Advance Medium-Low Duty Gearbox products can be divided into 06/16A/26 series,40A series, MA series,120 series,135 series,138 series, MB series, 300 series, 400 series, 600 series.
Advance Medium-Low Duty Gearbox have the ability to reducing speed, ahead and astern, clutching and disclutching and carrying the propeller thrust.
The said gearbox is somewhat new in construction, reliable in operation, smooth in engaging, light in weight, small in bulk, easy in maintenance and durable in application. The said gearbox is somewhat new in construction, reliable in operation, smooth in engaging, light in weight, small in bulk, easy in maintenance and durable in application. The transfer capacity ranges from 0.004kW /rpm to 0.48kW /rpm, with a ratio of 1.36:1-15.91:1.
The said products can be used in passenger or cargo boats, fishing boats, tow boats, tugs and high-speed vessels etc., which are perfect selections to make the engine in good condition and to get high efficiency.
As an official marine power pack packager of Advance, 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 cycle services for all our customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Advance GW Series Marine Gearbox

Advance GW Series Gearbox products can be divided into GWC series, GWD series, GWS series, GWH series, GWL series.
Thanks to their compact design and wide matching range,Advance GW Series Gearbox Its rated output speed is 150-2000r/min, the reduction ratio range is 1.94-7.48, and the rated transmission capacity is 0.29-35.429kw/r/min This series of products is manufactured by Advance with the license technology introduced by German Lohmann Company, and after more than 30 years of digestion, absorption and optimization design, it is mainly used in large bulk carriers, ocean fishing vessels, oil tankers, ships, etc. The product has reliable performance and convenient operation, and is the best partner for medium-speed diesel engines at home and abroad.
As an official marine power pack packager of Advance, 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 cycle services for all our customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Advance Medium-Heavy Duty Gearbox

Advance Medium-Heavy Duty Gearbox products can be divided into 800 series,1000 series,1100 series,1200 series,1400 series,1600 series,2000 series, 2700 series.
Advance Medium-Heavy Duty Gearbox have the ability to reducing speed, ahead and astern, clutching and dispatching and carrying the propeller thrust. The gearbox has reliable operation, stable meshing, high conversion efficiency, good transmission performance, large rated propeller thrust, convenient maintenance and durability. The transfer capacity ranges from 0.278 kW /rpm to 2.05 kW/rpm, with a ratio of 1.54:1-24.37:1.

This series of products are independently developed, designed, manufactured and tested by Advance for more than 50 years. They are widely used in transport ships, fishing boats, roller coasters and sea ships, with a market share of more than 65%, and are fully trusted and praised by the majority of users.
As an official marine power pack packager of Advance, 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 cycle services for all our customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Advance Special Gearbox

No matter using as marine main engines, or using as marine auxiliary engines, DCEC Cummins marine engines are able provide increased power-to-weight ratios, cleaner starts and less noise. DCEC Cummins marine engines provides B, C, L series engine for customers to choose. DCEC marine engines covering displacement from 3.9 to 8.9 liters, with power range from 47kW to 253kW.
DCEC Cummins employs an experienced team of technical and market experts focused on the marine industry and its customers. Factory trained Marine Application Engineers will help you select the right spec for your vessel and Qualified Marine Technicians keep you up and running once in service.
DCEC Cummins offers a complete line of propulsion, generating set and auxiliary power solutions designed specifically for the challenges of marine applications. Because
we understand customer needs and operating conditions vary, SeaMac also offer custom generator set packaging with various different classification societies.
Our in-house engineering experts provides custom complete solutions from marine main engine, gearbox, main shaft, propeller and complete generator set. Based on customer’s requirement, SeaMac provides one-stop solutions covers from pre-design to components supply, from installation to commissioning, from pre-sales communication to after-sales service support, Our one-stop solution not only significant improve operation efficiency, but also help customers to aviod mismatching problems caused by multiple independent suppliers of different components, which often caused lot of troubles for shipyards.
All of DCEC Cummins marine auxiliary engines and generator set are available for an unlimited number of hours per year in variable load applications. Variable load is not to exceed a 70 percent average of the rated power during any operating period of 250 hours. Total operating time at 100 percent Prime Power shall not exceed 500 hours per year.

Advance Light Duty & High Speed Gearbox

Advance Light Duty & High Speed Gearbox products can be divided into HCA038A series, HC65 series, HCQ100/MV100A series, HCV120 series, HCQ138/HCA138 series, 200/201/230 series, 300/301/302 series, 401/402 series, 501 series /502/500 series, 700/701 series, 1000/1001 series, 1400/1401 series, 1600/1601 series. Advance Light Duty & High Speed Gearbox power range is 20kW-2300kW, ratio range is 1.5-3.5:1.
This series of products are widely used in port supervision, maritime inspection, fire protection, anti-smuggling, patrol boats and other official boats and high-speed passenger ships. Compact, light weight, good maneuverability and other characteristics, enjoy a number of patents in the world. The product transfer capacity covers 0.028 r/min-1.204 r/min, which can be matched with domestic and foreign high-speed diesel engines, And according to customer demand for vertical, horizontal, inclined transmission arrangement.
As an official marine power pack packager of Advance, 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 cycle services for all our customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Marine Electric System

SeaMac offers one-stop solution for high quality standard marine electric system, from control console system to power distribution system, from control system to monitoring & Alarm system, from internal communication system to driving assistance system, all of our products are certified by CCS with very competitive price level.

World-Class Engine Power

Focusing on the reliable high-end marine engine only, SeaMac supplying complete propulsion system powered by DCEC, CCEC, HND, Mitsubishi, Volvo, MTU and CSSC marine engines, coupled with gearbox, main shaft and propellers.

SeaMac Marine Propeller

SeaMac provides high standard CU1, CU3, CU4 marine propellers as part of our propulsion system, all of our marine propellers are comes with CCS certificate, BV, ABS and other international certifications are also available with additional chargers.

SeaMac Marine Generator

Powered by world-class engine brand such as Cummins, Doosan, Mitsubishi and Weichai, SeaMac marine generator set offers premium reliable marine power system solution with Chinese level prices.

SeaMac Electric Propulsion System

To meet customers environment-friendly requirement, as well as leading the future trends, SeaMac developed our own electric propulsion system, which has been successfully applied to many boats in China, promoting the developing of marine electric propulsion system.

Marine Accessories

From main shaft to rudder system, from sacrificial zinc alloy anode to Seawater desalination system, from fire fighting system to emergency survival equipment, SeaMac provides one-stop solutions for all marine accessories, reduce customer's communication costs.

Advance Marine Gearbox

SeaMac is the official packager of Advanced Group, Advance marine gearbox products covering ranges from 10 kW to 10000 kW, which has been widely used in fishing boat, carrier, special ships and other types of vessels.

DCEC

DCEC Engine with a 50:50 equity ratio with diesel engine manufacturing as its main business, which mainly produces 120-600 horsepower DCEC diesel engine and 80-680 horsepower non-road diesel engine.

CCEC

In 1995, with a 50:50 shareholding ratio, with diesel engine manufacturing as its main business, CCEC Engine Company was established in the Martyrs Cemetery of Shapingba District, Chongqing City.

CSSC

China State Shipbuilding Corporation is a super-large enterprise established by the joint reorganization of the former China State Shipbuilding Corporation and the former China Shipbuilding Industry Corporation on October 14, 2019. There are 104 scientific research institutes, enterprise units and listed companies. With total assets of 890 billion yuan and 220,000 employees, it has the largest shipbuilding and repair base in China and the most complete research and development capabilities for ships and supporting products. Ship and Offshore Equipment is the world's largest shipbuilding group.

Advance Gearbox

Hangzhou Advance Gearbox Co., LTD, was founded in 1960. Advance is located on the south bank of Qiantang River in Hangzhou.

HND

Henan Diesel Engine Heavy Industry Co., Ltd. (referred to as Hechai Heavy Industry) is one of the 156 key projects in China and a member of China Shipbuilding Industry Corporation.

Shanghai Mitsubishi

coming soon

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Our company adheres to the principle of “customer first” and is always committed to providing high-quality products and services to every customer. As a leading foreign trade company, we warmly welcome customers from all over the world to visit our production facilities and experience our professional capabilities and advanced technologies firsthand. Every photo with our customers is a testimony to the trust and cooperation between us and our customers. Through face-to-face communication, we can better understand customer needs and further promote long-term partnerships between the two parties.

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