The Kato 5ton Mobile Crane Slew Bearing is a high-precision, durable rotating component engineered to ensure smooth and reliable crane operations. Manufactured by zz Slewing Bearing, this slewing ring is specifically designed for 5-ton Kato mobile cranes, providing excellent load capacity, stability, and long-lasting performance.

Crafted from high-strength 42CrMo or 50Mn alloy steel, each bearing undergoes advanced forging, heat treatment, and precision machining to achieve superior hardness, wear resistance, and fatigue strength. The bearing is optimized to handle combined axial, radial, and overturning loads, ensuring safe and efficient rotation of the crane’s superstructure.

The Kato 5ton slewing bearing features accurately machined gear teeth for smooth torque transmission and minimal vibration. Optional sealing solutions protect the bearing from dust, water, and debris, making it suitable for construction sites, industrial applications, and outdoor environments. Pre-lubricated versions are also available to simplify installation and reduce maintenance time.

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Manufactured from premium 42CrMo or 50Mn alloy steel, each bearing undergoes advanced forging, heat treatment, and precision machining to ensure exceptional hardness, wear resistance, and long-lasting performance. The optimized raceway and gear design allow the bearing to support axial, radial, and overturning moment loads simultaneously, ensuring the crane’s upper structure rotates safely and efficiently.

The Super Z300 slewing bearing features precision-machined gear teeth for smooth torque transfer and minimal vibration during operation. Optional sealing systems protect the bearing from dust, water, and other contaminants, while pre-lubricated versions reduce installation time and maintenance requirements.

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Kato 5ton Mobile Crane Slew Ring Bearing

Constructed from premium 42CrMo or 50Mn alloy steel, each bearing undergoes advanced forging, heat treatment, and precision machining to achieve exceptional hardness, wear resistance, and durability. The carefully engineered raceway geometry allows optimal distribution of axial, radial, and overturning moment loads, making it capable of handling the demanding requirements of large truck cranes.

Aichi F303 Mobile Crane (truck Crane) Slew Bearing

The Tadano Super Z500 slewing ring features high-accuracy gear teeth for efficient torque transmission, low vibration, and quiet operation. zz also offers optional pre-lubricated versions and enhanced sealing solutions to prevent dust, moisture, and debris from affecting performance, making it ideal for harsh working environments such as ports, construction sites, and mining operations.

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Designed to handle both axial and radial loads simultaneously, the Unic 330 slewing bearing guarantees smooth performance even under demanding lifting conditions. Each bearing is rigorously tested for hardness, dimensional accuracy, and gear tooth precision, ensuring quiet operation, minimal vibration, and long service life.

Perfectly compatible with Unic 330 truck cranes, it supports efficient boom rotation, precise load handling, and reduced downtime — making it ideal for logistics handling, construction lifting, and on-road crane applications. zz’s strict quality control ensures durability, corrosion resistance, and reliability in harsh working environments.

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Aichi F304 Mobile Crane (truck Crane) Slew Bearing

Each bearing is precision-engineered to meet OEM standards for Aichi F507 truck cranes, offering perfect interchangeability and reliable performance during long-term use. It also features optimized gear teeth for improved torque transmission and noise reduction, ensuring safe and efficient crane operation at construction sites and port handling applications.

Aichi F303 Mobile Crane (truck Crane) Slew Bearing

Technical Highlights

• Application: Aichi F507 Truck Crane
• Type: Four-point contact ball slewing bearing
• Rotation: 360° continuous
• Material: 42CrMo / 50Mn
• Gear Type: External gear
• Lubrication: Grease-filled, easy maintenance
• Features: High load capacity, precision ground raceway, rust-resistant coating

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Aichi F507 Mobile Crane (truck Crane) Slew Bearings

Manufactured by zz Slewing Bearing, the F304 slewing ring is engineered to meet the high torque and heavy-load requirements of Aichi cranes. Using advanced design software and finite element analysis, zz ensures each bearing’s load distribution, gear engagement, and raceway geometry are optimized for long-term performance.

Aichi F303 Mobile Crane (truck Crane) Slew Bearing

Each bearing is forged from high-strength 42CrMo or 50Mn steel, followed by precision heat treatment to achieve consistent hardness and durability across all working surfaces. The raceway is finely ground to reduce friction, improving operational smoothness and extending service life. The internal gear teeth are machined using CNC hobbing technology to ensure accurate meshing and low noise during rotation.

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zz’s engineering team optimizes each bearing’s internal design to handle combined loads — including axial, radial, and overturning moments — which are essential for cranes operating in uneven or high-load environments. The slewing ring for Aichi F303 is made from high-quality 42CrMo or 50Mn alloy steel, processed through precision forging, quenching, and surface grinding to achieve maximum hardness and fatigue resistance.

Unlike standard bearings, zz Slewing Bearings for mobile cranes incorporate reinforced raceways and customized gear modules to ensure efficient torque transmission during heavy-duty lifting. The structure design ensures a perfect balance between rotational smoothness and load stability.

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Kato 5ton Mobile Crane Slew Ring Bearing

Each zz slewing bearing is made from high-strength 42CrMo or 50Mn alloy steel, using advanced forging, heat treatment, and precision machining technology. This ensures excellent wear resistance, high hardness, and stable performance under heavy load and high torque conditions.

Tadano Super Z500 Truck Crane Slew Bearing

The Tadano TC75M slewing ring supports axial, radial, and overturning moment loads simultaneously, providing reliable rotation for the crane’s superstructure. It’s available in both internal and external gear configurations, depending on customer requirements.

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Tadano Tc70m Mobile Crane (truck Crane) Slew Bearing

zz Slewing Bearing produces custom replacement slew bearings for Tadano cranes, offering both external and internal gear designs to meet different mechanical configurations. Made from premium 42CrMo or 50Mn alloy steel, each bearing is processed through advanced forging, heat treatment, and CNC machining for high precision, hardness, and wear resistance.

Aichi F303 Mobile Crane (truck Crane) Slew Bearing

Every Tadano TS75M slewing bearing undergoes strict quality inspection — including dimensional accuracy, gear precision, and raceway hardness — to ensure excellent performance even under heavy axial and radial loads. The optimized raceway design allows stable operation and minimal vibration during crane rotation.

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Tadano Ts75m Mobile Crane (truck Crane) Slew Bearing

zz Slewing Bearing manufactures custom replacement slew bearings for Tadano mobile cranes, available in both external and internal gear configurations. Each bearing is crafted from premium 42CrMo or 50Mn alloy steel, undergoing advanced forging, quenching, and precision machining to achieve high hardness, wear resistance, and long service life.

Tadano Super Z500 Truck Crane Slew Bearing

Before shipment, every Tadano TC70M slewing ring is strictly tested for gear accuracy, raceway smoothness, and hardness to ensure safety and stability in demanding job sites. The bearing’s structure is optimized to handle large axial and radial loads as well as overturning moments, making it ideal for the rotation system of Tadano truck cranes.

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