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Water Lubricated Stern Tube Bearing
Rudder Stock Bush
Rudder Pintle Bush
Zhoushan Shenlong Ship Technology: Global Leader in Other Bearings Solutions
As a national high-tech enterprise, Zhoushan Shenlong Ship Technology Co., Ltd. stands at the forefront of marine bearing innovation. We specialize in designing and manufacturing high-performance polymer composite materials for shipbuilding, aviation, and ocean platforms.
Our core expertise lies in Rudder Stock Bushes, Rudder Pintle Bushes, and Water Lubricated Stern Tube Bearings. With over 30 years of development, we provide one-stop services integrating experimental evaluation, mechanism research, and technical consultation to global buyers.
We offer best-in-class nano and rare earth modified technologies for elastomeric thermoplastic resin and phenolic resin thermosetting composites. Our products are widely used in military ships, commercial vessels, hydro engineering, and mining machinery, ensuring reliability where it matters most.
Why Procurement Leaders Source Marine Bearings from Zhoushan Shenlong
Advanced Material Technology
Our proprietary SL-IIIA series uses rare earth and nanotechnology modification, offering independent intellectual property rights and national invention patents. This ensures superior pressure resistance, impact resistance, and self-lubricating performance compared to standard market options.
Global Certification Compliance
We hold eight national classification society type approval certificates, including CCS, DNV/GL, LR, RS, ABS, BV, NK, and KR. This comprehensive certification portfolio simplifies your compliance process and reduces procurement risk for international projects.
Expert Engineering Support
With more than 10 senior engineers in marine power and naval architecture, we provide dedicated technical support in design, production, testing, and installation. Our team ensures that every bearing solution is tailored to your specific operational requirements.
Factory Capability & Production Capacity for High-Volume Orders
Our state-of-the-art manufacturing facilities are designed to meet the rigorous demands of global shipbuilding and industrial markets. We combine advanced automated processing with precision craftsmanship to deliver consistent quality across all batches.
30+
Years Experience
6000+
Ships Served
We produce cylindrical and sheet shapes with complete specifications, ensuring convenient processing and installation for our clients. Our capacity allows us to handle large-scale orders efficiently without compromising on lead times or quality standards.
From raw material selection using nano-modified resins to final inspection, every step is controlled by our experienced engineering team to guarantee long service life and optimal performance in harsh marine environments.
Quality Control & Manufacturing Standards for Marine Components
Quality is the cornerstone of Zhoushan Shenlong's reputation. Our Water Lubricated Stern Tube Bearings and other polymer composite products undergo rigorous testing to ensure they meet international standards for durability and performance.
The SL-IIIA series has been verified through horizontal novelty search reports by the Shanghai Institute of Science and Technology Information, confirming its advanced level among similar international products. We maintain strict control over acid resistance, alkali resistance, and corrosion resistance properties.
Certifications & Approvals
- CCS
- DNV/GL
- LR
- RS
- ABS
- BV
- NK
- KR
Proven Track Record: Global Customer Feedback on Marine Bearings
"The rudder stock bushes supplied by Shenlong have performed exceptionally well in our fleet operations. Their corrosion resistance and self-lubricating properties significantly reduced our maintenance downtime."
— Senior Fleet Manager, European Shipping Line"We required custom insulation support blocks for a specialized offshore platform project. Shenlong's engineering team provided excellent technical support and delivered products that exceeded our performance expectations."
— Project Engineer, Offshore Construction Firm"Reliable delivery and consistent quality make Zhoushan Shenlong a preferred supplier for our military vessel upgrades. Their certifications and material transparency give us full confidence in their products."
— Defense Procurement Officer, Military ShipyardExport Expertise & Global Market Experience in Other Bearings
With over three decades of industry leadership, Zhoushan Shenlong Ship Technology has established a robust global presence. Our products are trusted by customers worldwide for their reliability, performance, and compliance with international maritime standards.
European Markets
Our bearings are extensively used in commercial and military vessels across Europe. We understand the stringent regulatory requirements of EU ports and shipping companies, ensuring full compliance with local standards.
Southeast Asia
A significant portion of our exports serves the growing maritime industry in Southeast Asia. We provide tailored solutions for tropical marine environments, focusing on heat resistance and humidity protection.
Middle East
In the Middle East, our products are valued for their durability in extreme temperatures and saline conditions. We support major oil rig operations and commercial shipping routes in the region.
Our experience exporting to more than 20 countries demonstrates our capability to manage complex logistics, documentation, and after-sales support for international clients. We simplify your procurement workflow by handling all export-related complexities.
Frequently Asked Questions About Marine Bearings & Supply
What are the advantages of polymer composite bearings over traditional bronze bearings?
Polymer composite bearings, such as our SL-IIIA series, offer significant advantages including lighter weight, superior corrosion resistance, and self-lubricating properties. They eliminate the need for external lubrication systems, reducing maintenance costs and environmental impact. Additionally, they provide better shock absorption and noise reduction compared to metal bearings.
Do you offer OEM customization for rudder pintle bushes and stern tube bearings?
Yes, we specialize in product customization services. Our engineering team can design and manufacture bearings to your specific dimensions, load requirements, and operating conditions. We work closely with clients to develop tailored solutions for unique applications in shipbuilding and marine engineering.
What certifications do your marine bearings hold for international shipping?
Our products hold type approval certificates from eight major classification societies: CCS, DNV/GL, LR, RS, ABS, BV, NK, and KR. These certifications ensure our bearings meet the highest international standards for safety and performance in marine environments.
How does water lubrication affect the lifespan of stern shaft bearings?
Water lubrication extends bearing lifespan by reducing friction and wear while eliminating oil contamination risks. Our specially formulated polymer composites are optimized for water-lubricated applications, providing excellent wear resistance and dimensional stability even under continuous operation in seawater.
What is the typical lead time for bulk orders of marine bearings?
Lead times depend on order volume and customization requirements. Standard items typically ship within 2-4 weeks, while custom-engineered solutions may require 6-8 weeks. Our large production capacity and efficient supply chain allow us to accommodate urgent orders whenever possible.