Double-row Same-Diameter Ball Slewing Bearings for Truck Crane

Double-row same-diameter ball slewing bearing

Double-row same-diameter ball slewing bearings feature two rows of rolling elements (balls) inside, with both the upper and lower rows having the exact same diameter. They typically consist of an inner ring, an outer ring, and two rows of same-diameter balls, separators and seals. This structure is capable of withstanding heavy axial load, radial load, and tilting moments in same time, which ensures a higher safety factor. Compared to single-row ball slewing bearings, the double-row design provides various load capacity while maintaining a more compact overall height than triple-row roller slewing rings.

Features & performance advantages

The double-row same-diameter ball slewing bearings have a uniform ball sizing, strong comprehensive load capacity, compact and robust structure, and high space utilization. The double-row ball design is ideal for applications that need low-speed rotation under heavy and complex loads.

Specification

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Why Choose Us

High load capacity, wear resistance & long service life

Strict dimensional tolerance, smooth rotation

Customization drawings / OEM / ODM available

Direct factory price, stable delivery

Complete inspection & test report before shipment

Suitable for heavy-duty engineering & harsh working environment

After Sales Service

Tailored product according to your drawings or samples

Professional technical support anytime

Strict quality inspection & full set of shipping documents

Fast delivery & safe packaging (plywood pallet/case)

One-year quality warranty

FAQ

1. Does the non-quenched internal gear affect service life?

The non-quenched internal gear design of slewing bearings is developed primarily for medium-light duty truck crane applications. Within the rated load range and under normal lubrication and maintenance conditions, the gear tooth wear remains within acceptable limits and fully meets the equipment's design service life requirements. 

2. What is the advantages of using 50Mn material for the double-row ball slewing bearings?

This double-row ball slewing bearing uses 50Mn material based on the operating condition positioning of medium-light duty truck cranes. While meeting rated load capacity and fatigue life requirements, 50Mn offers better cost-effectiveness and shorter delivery cycles, making it the optimal material solution for this product class.