Slewing Bearings

Three Row Cylindrical Roller Slewing Bearing

Materials

Bearing ring: 42CrMo / 50Mn / C45 (high-strength alloy steel)

Rollers: GCr15 (high-carbon chromium steel)

Cage: Steel 20 / ZL102 cast aluminum alloy

Spacer: Nylon 6 / Nylon 66

Size Range

  Outer diameter: 300mm-6000mm (standard) / 100mm-15000mm (customized)

  Accuracy Class: P0,P5

  Sealing Options: Open type / Contact rubber seal (RS) / Metal dust cover (ZZ)

Description

Design Principle: The three rows of rollers bear axial,radial,and overturning moments respectively. Through the independent raceway design,the load is separated,reducing internal stress concentration. Performance Features: Compound load-bearing capacity: Capable of simultaneously withstanding axial,radial,and moment loads.-High-rigidity structure: The three-row roller layout improves the anti-deformation ability. Long-service-life design: Hardened raceways (HRC55-62) enhance wear resistance.
Three Row Cylindrical Roller Slewing Bearing

Features

Optimized compound load

No additional bearing combinations are required,simplifying the mechanical structure.

High reliability

Adaptable to harsh working conditions (dust,vibration,impact).

Easy installation

Standardized interfaces are suitable for a variety of equipment.

Economical maintenance

Long-acting lubrication design reduces downtime.

Working Principle

Three Row Cylindrical Roller Slewing Bearing
Load Transfer Mechanism: Axial load: Directly borne by the upper and lower rows of rollers. Radial load: Evenly distributed by the middle row of rollers. Overturning moment: Transferred through the diagonal contact of the three rows of rollers. Lubrication and Sealing: Grease lubrication: Lithium-based grease (-20°C ~ 120°C). Oil lubrication: Circulation system for high-speed and heavy-load scenarios. Sealing structure: Double lip-type seal (RS + ZZ) to protect against contaminants.

Techspecs

Application & Case

Cranes: Rotary support for wheeled cranes and port cranes.

Excavation Equipment: Bucket-wheel excavators and heavy-duty mobile cranes.

Wind Power Generation: Rotational connection of wind turbine towers.

Metallurgical Machinery: Ladle turrets.

Ship Engineering: Marine cranes and offshore platform equipment. 

FAQ

Inner gear,outer gear,or gearless designs are supported. Tooth profile parameters can be customized according to ISO standards.
Fix it with flange bolts. The parallelism of the installation surface should be ≤0.05mm.
High-temperature grease (≤200°C) and special materials (such as carburized steel) can be selected.
It is recommended to pre-tighten according to the load conditions to improve rigidity and accuracy.

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NewBee Machinery has 20 years’ experience in customize machinery parts.

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Luoyang City, Henan, China

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