Harvester Slewing Bearing – Precision Rotation for High-Performance Agricultural Machinery
As a professional manufacturer of slewing bearings, ZZ specializes in designing and producing high-performance harvester slewing bearings that ensure smooth, reliable rotation in demanding agricultural environments. Our bearings are engineered to support the upper structure of harvesters while enabling 360° continuous rotation under heavy loads, making them essential for modern combine harvesters, forage harvesters, and other rotary agricultural machinery.
With decades of experience in bearing technology and a deep understanding of agricultural equipment requirements, ZZ delivers harvester slewing bearings that combine durability, precision, and long service life—even under extreme operating conditions.
Product Performance & Quality
Our harvester slewing bearings are built to withstand the rigorous demands of agricultural harvesting operations, including shock loads, dust, moisture, and temperature variations. Key performance features include:
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High Load Capacity: Designed to support combined axial, radial, and moment loads encountered during harvesting operations.
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Precision Rotation: Optimized internal geometry ensures smooth and accurate rotational movement for improved machine control.
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Sealing Protection: Multi-layer sealing systems prevent contamination from dust, mud, and moisture, extending bearing life.
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Corrosion Resistance: Surface treatments and material selections enhance durability in humid and corrosive agricultural environments.
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Low Maintenance: Pre-lubricated and sealed designs reduce the need for frequent maintenance, minimizing downtime.
All ZZ harvester slewing bearings undergo strict quality control and performance testing to ensure reliability in real-world agricultural applications.
Technical Specifications
ZZ offers a wide range of harvester slewing bearings in various sizes and configurations to match different harvester models and operational requirements. Custom designs are available upon request.
Typical Technical Parameters
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Parameter
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Specification
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Bearing Type
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Single-row four-point contact ball / Double-row ball / Crossed roller
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Outer Diameter
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200 mm – 1500 mm
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Inner Diameter
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150 mm – 1400 mm
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Height
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40 mm – 200 mm
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Material
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42CrMo, 50Mn, SAE 52100, or custom alloy steel
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Hardness (Raceway)
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HRC 55–62
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Sealing Type
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Rubber seals, labyrinth seals, or custom sealing solutions
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Lubrication
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Grease lubrication with lubrication holes
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Gear Type
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External gear, internal gear, or no gear
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Mounting Holes
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Threaded or through holes, customizable per drawing
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Certifications & Standards
ZZ is committed to manufacturing harvester slewing bearings that meet or exceed international quality and safety standards. Our production processes are certified under:
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ISO 9001:2015 – Quality Management System
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ISO 14001 – Environmental Management
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CE Certification – Compliance with European safety and performance standards
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JB/T 2300-2011 – Chinese industry standard for slewing bearings
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DIN, ANSI, and JIS – International dimensional and material standards
We also provide full material traceability, inspection reports, and third-party testing documentation upon request.
Product Applications
ZZ harvester slewing bearings are widely used in a variety of agricultural and industrial machinery, including:
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Combine Harvesters – Supporting turret rotation for grain collection and discharge.
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Forage Harvesters – Enabling precise header positioning and rotation.
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Cotton Pickers – Facilitating smooth rotation of picking units.
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Agricultural Cranes & Loaders – Assisting in material handling and boom rotation.
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Rotary Tillers & Sprayers – Providing stable rotation for field operations.
Our bearings are also adapted for use in construction machinery, forestry equipment, and material handling systems where reliable rotational support is critical.
Product Services
At ZZ, we offer comprehensive services to support our customers from design to after-sales:
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Custom Design & Engineering: Tailored solutions based on your machine specifications and load requirements.
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OEM & ODM Support: Full support for private labeling, packaging, and technical documentation.
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Technical Consultation: Expert advice on bearing selection, installation, and maintenance.
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Fast Delivery: Standard models in stock; custom orders shipped within 4–6 weeks.
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After-Sales Support: Warranty coverage and responsive customer service for all ZZ products.
Frequently Asked Questions (FAQ)
What is a harvester slewing bearing?
A harvester slewing bearing is a specialized rotational bearing used in agricultural harvesters to support the upper structure and enable 360° rotation under load. It combines the functions of a bearing and a gear, allowing smooth and precise movement in harvesting operations.
What materials are used in ZZ harvester slewing bearings?
We use high-strength alloy steels such as 42CrMo and 50Mn, with raceways hardened to HRC 55–62 for superior wear resistance and load capacity.
Can you provide bearings with custom gear teeth?
Yes, we can manufacture slewing bearings with external or internal gear teeth according to your module, pressure angle, and tooth profile specifications.
How do I maintain a harvester slewing bearing?
Regular lubrication, inspection of seals, and avoiding overloading are key to extending bearing life. ZZ provides maintenance guidelines and lubrication schedules with every product.
Do you offer international shipping?
Yes, ZZ ships harvester slewing bearings worldwide via sea, air, or express courier, with full export documentation and packaging protection.
Choose ZZ as your trusted partner for high-quality harvester slewing bearings. With precision engineering, rigorous quality control, and customer-focused service, we deliver rotational solutions that keep your agricultural machinery running smoothly season after season.
