LTZC Marine Slewing Bearing Manufacturer to Attend VIMOX 2026

As a specialized manufacturer of slewing bearings, LTZC will focus its exhibition presence on marine slewing bearings and customized slewing bearing solutions. Slewing bearings are far more than simple rotating components; they operate under demanding conditions—characterized by low speeds, heavy loads, frequent start-stop cycles, high humidity, and high salinity—while withstanding axial loads, radial loads, and tilting moments. With over 30 years of industry experience, LTZC provides tailored solutions for sectors such as construction machinery, port equipment, and mining machinery.

Exhibition Name: Vietnam International Marine & Offshore Expo 2026

Exhibition Period: October 21–23, 2026

Booth Number: 14

Venue: The ADORA Center (3rd Floor), 431 Hoang Van Thu, Tan Son Nhat Ward, Ho Chi Minh City, Vietnam

I. Why are marine slewing bearings so important for marine equipment?

Slewing bearings are typically installed between the upper rotating structure and the lower base. They serve as critical load-bearing connection components for the entire rotating mechanism, withstanding the immense loads and overturning moments generated by hoisted cargo.

Consequently, marine slewing bearings effectively perform two core functions:

First, they provide reliable rotational movement.

Second, they withstand combined loads from multiple directions during rotation.

While standard bearings are designed primarily for rotation, slewing bearings are capable of both rotation and significant load-bearing.

II. What are the specific requirements for slewing bearings in Southeast Asian marine equipment?

2.1 High-humidity environments

Marine vessels and offshore equipment operate in high-humidity environments for extended periods. Bearings must feature robust sealing capabilities to resist humidity and prevent moisture ingress; otherwise, lubrication performance degrades, friction between rollers and raceways intensifies, and corrosion occurs, severely damaging the bearing's internal structure.

2.2 Salt spray and seawater corrosion

Marine slewing bearings are constantly exposed to salt spray and seawater, which accelerate metal surface corrosion. When selecting bearings for marine applications, factors such as seal design, lubrication systems, and anti-corrosion treatments must be considered based on the actual operating environment. LTZC offers double-lip seal designs and necessary surface treatments—such as black oxide coating and galvanizing—specifically for marine bearings. Furthermore, our seal designs have undergone rigorous testing to ensure full compatibility with marine environments.

2.3 Customized solutions

LTZC Bearings has over 30 years of experience in the industry, specializing in the production of standard and custom non-standard slewing bearings. Our manufacturing facilities are equipped with 3m and 5m rough-turning lathes, 6m precision lathes, 10m gear hobbing machines, and 13m vertical lathes, enabling us to process bearings ranging from 1 meter to 15 meters in diameter. Our products hold certifications such as ISO9001, ISO45001, ABS, BV, and CCS. We are capable of handling bulk orders and guarantee on-time delivery within 20–30 days.

III. Common applications for marine slewing bearings

Marine cranes

Marine cranes represent one of the key applications for marine slewing bearings. During cargo hoisting, equipment transfer, and offshore engineering operations, crane slewing systems must withstand combined loads arising from the boom, the cargo, wind forces, and equipment movement. Large-scale equipment often employs a three-row roller slewing bearing design to handle extreme loads.

Deck Machinery

Rotating machinery on deck often faces challenges such as moisture, salt spray, wind loads, and spatial constraints. Slewing bearings must ensure reliable rotation within limited space while maintaining precise integration with equipment mounting flanges, gears, or drive mechanisms.

Offshore Engineering Equipment

Offshore platforms, floating units, engineering vessels, and other offshore machinery frequently require large-scale slewing bearings. LTZC specializes in the manufacture of large-diameter slewing bearings; notably, in 2024, the company produced a slewing bearing with a diameter of 10.83 meters for a South Korean client.

Port Machinery

Large diameter slewing bearings are also utilized in port cranes, mobile port equipment, and cargo handling machinery. Although some port equipment does not operate directly at sea, the coastal working environment still exposes the machinery to salt spray, humidity, and temperature fluctuations.

IV. How to Select the Right Marine Slewing Bearing for Marine Equipment?

4.1 Determine the Loads

You need to provide the following information to the marine slewing bearing manufacturer: maximum axial load, maximum radial load, maximum tilting moment, static load, dynamic load, and impact load. These are the core factors for selecting the slewing bearing structure.

4.2 Determine the Rotational Speed

Marine slewing equipment typically does not require very high rotational speeds. Factors such as operating speed, start-stop frequency, and runtime influence the lubrication scheme, seal design, and service life calculations. These parameters help the manufacturer determine the appropriate bearing structure.

4.3 Select the Appropriate Bearing Structure

Single-row ball slewing bearings: Characterized by a relatively compact structure and lower weight; suitable for rotating platforms subject to light loads.

Crossed-roller slewing bearings: Offer high rigidity and stability; suitable for equipment requiring high load capacity and high precision.

Three-row roller slewing bearings: Offer superior load-bearing capacity; suitable for high-load applications such as large marine cranes and heavy-duty offshore equipment.

LTZC provides customers with standard slewing bearing models and supports the customization of non-standard bearings, offering a comprehensive one-stop solution.

Request a quote from LTZC Bearings.

V. LTZC Custom Slewing Bearing Manufacturing Capabilities

5.1 R&D, Selection, and Customization Capabilities

With over 30 years of experience in the bearing industry, LTZC has overcome complex challenges regarding sealing, lubrication, and structural design for construction machinery, metallurgical equipment, and port machinery. We possess comprehensive capabilities to develop non-standard slewing bearing solutions, offering customized designs tailored to specific requirements—such as actual loads, rotational speeds, duty cycles, marine corrosion conditions, and installation space constraints—for marine vessels and offshore equipment.

5.2 Product Structure and Dimensional Customization Range

LTZC offers a wide range of products, including four-point contact ball bearings, double-row ball bearings, three-row cylindrical roller bearings, crossed roller bearings, segmented ultra-large diameter slewing bearings, thin-section bearings, slewing drives, gear rings, and flange components. Machining diameters range from Φ100mm to Φ15,000mm, with precision classes covering P0, P6, P5, and P4.

5.3 Material and Marine Anti-Corrosion Customization Capabilities

Base materials: Alloy steels such as 42CrMo and 45# steel;

Raceway heat treatment: Induction hardening of raceways (hardness HRC 55–62), ensuring excellent impact and fatigue resistance;

Marine anti-corrosion solutions: Hot-dip galvanizing and zinc-nickel plating, designed to withstand harsh offshore environments involving salt spray, high humidity, and wave impact;

Customized sealing: Double-lip NBR (Nitrile Rubber) or FKM (Fluoroelastomer) sealing structures to prevent the ingress of seawater and salt crystals into the raceway.

5.4 Quality Inspection and Classification Society Certification Capabilities

All incoming forgings are accompanied by ultrasonic and magnetic particle inspection reports. We support inspections by classification societies such as BV, CCS, and ABS to meet the specific requirements of marine equipment.

5.5 Full-Lifecycle Technical Service Capabilities

Pre-sales: Load verification, selection recommendations, drawing reviews, and technical specification responses;

During-sales: Production progress tracking and sample inspection;

After-sales: Installation guidance, maintenance manuals, and technical support for troubleshooting, providing comprehensive support throughout the product's entire lifecycle.

If you are looking for marine slewing bearings for ships, offshore equipment, or port machinery—or require a manufacturer capable of OEM/ODM services and custom designs—we invite you to discuss your project needs with LTZC during VIMOX 2026.

LTZC looks forward to meeting global maritime industry buyers in Ho Chi Minh City, Vietnam, in October 2026 to explore opportunities for the supply and customization of slewing bearings for the Southeast Asian market.

Learn more about LTZC bearing products.

Exhibition Name: Vietnam International Marine & Offshore Expo 2026

Exhibition Period: October 21–23, 2026

Booth Number: 14

Venue: The ADORA Center (3rd Floor), 431 Hoang Van Thu, Tan Son Nhat Ward, Ho Chi Minh City, Vietnam