Marine ZQ Series Cylindrical Gearbox

About product

The Marine ZQ Series Cylindrical Gearbox, despite being primarily designed for industrial applications in industries such as building materials, lifting, transportation, metallurgy, chemical industry, and light industry, can also be utilized in marine applications, including marine winches.

ZQ Series Cylindrical Gearbox Drawing

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Horizontal Type



Product Detail

Key Features Of Marine ZQ Series Cylindrical Gearbox

When used in marine winch applications, the Marine ZQ Series Cylindrical Gearbox offers several advantages:

  • Efficient Power Transmission: The gearbox is engineered to provide efficient power transmission, ensuring that the input power is effectively translated into the output power required for the marine winch operation. This efficiency helps optimize the performance of the winch system.
  • Robust Construction: The gearbox is designed to withstand the demands of industrial applications, which often involve heavy loads and harsh operating conditions. This robust construction makes it suitable for marine environments, where durability and reliability are crucial due to the corrosive nature of saltwater and the challenging marine conditions.
  • Wide Operating Temperature Range: The Marine ZQ Series Cylindrical Gearbox is designed to operate within a temperature range of -40°C to +40°C. This temperature tolerance allows it to function reliably in various marine environments, including both warm and cold climates.
  • Bi-Directional Operation: The gearbox has the capability to run in both forward and reverse rotation. This feature is beneficial for marine winches that may require bidirectional operation, such as anchor winches or mooring winches.

Model Selection For Marine ZQ Series Cylindrical Gearbox

When selecting the appropriate Marine ZQ Series Cylindrical Gearbox for your application, there are several factors to consider, including the reduction ratio, torque calculation, and applicable power.

  • Reduction Ratio: The reduction ratio determines the relationship between the input speed from the servo motor and the output speed of the gearbox. It is calculated by dividing the servo motor speed by the reducer output shaft speed. To closely match the ideal reduction ratio, you should evaluate the specific requirements of your application, such as the desired speed and torque output, and select a gearbox model that offers a reduction ratio closest to your needs.
  • Torque Calculation: Proper torque calculation is crucial to ensure the longevity and performance of the gearbox. It is important to consider whether the maximum torque value (TP) during acceleration exceeds the maximum load torque capacity of the reducer. This analysis helps prevent overloading and potential damage to the gearbox. Ensure that the selected gearbox can handle the expected torque demands of your application.
  • Applicable Power: The applicable power of the servo motor typically determines the power range suitable for the gearbox. The Marine ZQ Series Cylindrical Gearbox has high applicability due to its compatibility with various servo models available on the market. It is recommended to choose a gearbox that can maintain a working coefficient above 1.2 to ensure reliability and longevity. However, you can also consider your specific application requirements and decide on the appropriate gearbox based on your needs.

Marine ZQ Series Cylindrical Gearbox Parameter

Center DistanceOverall DimensionShaft DimensionL1L2L3B4H1gMounting DimensionWeight/kg


Know Who We Are

About our company

Zava Marine Corporation is a leading supplier of marine parts and components. With a strong focus on quality and customer satisfaction, we specialize in providing a comprehensive range of high-quality marine equipment and accessories. Our products include deck equipment, ship accessories, and various other essential components needed for smooth maritime operations.

With a global presence, we serve a diverse customer base, including shipbuilders, shipowners, offshore operators, and marine equipment distributors. We are committed to providing exceptional service and tailored solutions to meet our customers’ unique needs.


Zava Marine offers a comprehensive range of certifications for marine parts in accordance with international standards and regulations. These certifications include those provided by renowned marine classification societies such as Lloyd’s Register (LR), Bureau Veritas (BV), China Classification Society (CCS), Registro Italiano Navale (RINA), American Bureau of Shipping (ABS), Nippon Kaiji Kyokai (NK), and Det Norske Veritas – Germanischer Lloyd (DNV-GL). By collaborating with these esteemed societies, Zava Marine ensures that our certified marine parts meet the highest standards of safety, quality, and performance, instilling confidence in our reliability and compliance within the maritime industry.

The warranty provided by Zava Marine covers defects in materials and workmanship for a period of two years from the date of purchase. During this warranty period, if any marine parts purchased from Zava Marine exhibit issues or failures resulting from manufacturing defects or faulty materials, Zava Marine will take responsibility for repair or replacement of the affected parts. 

Zava Marine has recently opened new molds for European and North American clients, utilizing materials such as metal, ABS, PVC, and more. These successful mold opening projects allow us to provide customized marine parts and components that meet the specific requirements of our clients in these regions.

Typically, Zava Marine can ship samples within 7 days once the product drawing has been mutually confirmed by both parties. This efficient process ensures that customers can receive samples promptly, allowing them to assess the quality and suitability of the products.

Zava Marine frequently utilizes a wide range of materials in our projects. These materials include aluminum, stainless steel, carbon steel, copper, plastics, titanium, and PEEK (Polyether Ether Ketone). Each material offers unique properties and characteristics suitable for various marine applications. 

Yes, we provide customization services for marine parts. We understand that every project and application may have unique requirements, and we are committed to delivering tailored solutions. By collaborating closely with our clients, we can adapt our products to specific specifications, ensuring optimal fit, performance, and compatibility. Whether it’s modifying existing designs or creating entirely new parts, our customization services cater to the diverse needs of the maritime industry.

Absolutely! We offer product design and development services to support our clients’ needs. Our experienced team of engineers and designers can collaborate with clients from concept development to final product realization. By leveraging our expertise in marine engineering and design, we can provide valuable insights and innovative solutions. Whether it’s optimizing existing designs or creating entirely new products, we are equipped to assist clients in bringing their ideas to life efficiently and effectively.

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