Crane Slewing Ring

Crane Slewing Ring – High-Load Rotation Solutions for Heavy Lifting Equipment

Luoyang Heng Guan Bearing Technology supplies precision-engineered Crane Slewing Ring assemblies for lifting equipment ranging from 5 to 3000+ ton capacity. Our Slewing Bearings feature forged 42CrMo/50Mn ring material, induction-hardened raceways (55-62 HRC), and GCr15 rolling elements, supporting outer diameters from 200mm to 6000mm+. Whether you operate a topkit crane bearing system, flat top crane turntable, or heavy-duty lattice boom crawler bearing, our configurations—single-row ball, cross roller, and three-row roller—deliver the tilting moment capacity and service life your application demands. All crane slewing bearings undergo coordinate measurement and vibration testing to ensure ISO 9001 compliance. The In Stock product ships within 7-15 days from stock. Custom setups take 4-6 weeks, depending on intricacy.

Technical Specifications

Certification

Applications by Crane Type

Tower Crane

Tower crane slewing bearings allow the mast top jib, counter-jib, and cab to spin 360°. Depending on tower crane capacity (from tiny self-erecting to big luffing jib types), bearings range from compact, cost-effective single-row four-point contact ball to cross roller or three-row roller (50+ ton-meter class). Liebherr, Potain, Comansa, Zoomlion, and XCMG tower cranes employ our tower product assembly.

Truck-mounted/mobile crane

Telescopic boom superstructure rotation on truck chassis is supported by mobile crane slewing bearings. Single-row four-point contact ball or cross roller designs are typical for 20-100 ton truck crane slewing bearings. Three-row roller bearings offer tilting moment capability for extended boom operations in 100-500 ton variants. Direct OEM replacement is provided for truck-mounted crane turntable assemblies and hydraulic truck crane bearing configurations.

Crawler Crane

The most demanding crawler crane slewing bearings handle 100-meter lattice boom configurations on tracked undercarriages. Three-row roller crawler cranes are normal for 100-3000 tons. Our crawler crane slewing bearing and Crane Slewing Ring products include induction-hardened raceways (55-62 HRC) for long-lasting performance under heavy-duty cycles. Replaces Manitowoc, Kobelco, Hitachi-Sumitomo, and Sany crawler crane bearings.

All-Terrain Crane

All-terrain cranes need small, high-load slewing bearings for highway and off-road mobility. Liebherr (LTM series), Terex-Demag (AC series), and Grove (GMK series) equipment typically use cross roller and three-row roller types for all terrain crane slewing and turntable bearing installations.

Marine/Offshore Crane

Shipboard and offshore pedestal cranes face severe temperatures, humidity, salt spray, and dynamic loads from vessel motion. Standards include three-row roller slewing bearings with corrosion protection (special coatings, stainless steel alternatives). We provide labyrinth + lip seal combinations for IP66 equivalent protection in our offshore crane slewing bearing, marine product, pedestal crane bearing, and ship crane turntable goods.

Harbor Crane/Portal

Portal harbor cranes power bulk and general cargo terminals. Their three-row roller slewing bearings are among the biggest in the crane business, frequently surpassing 4000mm OD. We provide bespoke gear specifications and bolt patterns for direct OEM replacement in our heavy-duty harbor product, port crane slewing bearing, dock crane turntable, and portal crane bearing assemblies.

Crane for rough terrain

Construction locations with unprepared ground use rough terrain (RT) cranes. They must control booms while handling uneven terrain shock loads with their slewing bearings. Cross roller designs offer stiffness for difficult terrain crane slewing and RT crane swing applications.

Selection Guide by Crane Type

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Packaging & shipping

Your products are one of a kind, and subsequently their transportation prepare ought to be immaculate. For this reason, we offer proficient and customized bundling administrations. Our experienced group will survey the characteristics of your merchandise, transportation course, and natural prerequisites to suggest the most secure arrangement, such as wooden carton bundling, tough outline bundling, or composite fortified bundling (wooden case + press frame).

Positive customer reviews

Our product quality and service have won widespread praise from our customers.

FAQ

Q: What type of slewing bearing is best for a tower crane?

A: For small to medium tower cranes (up to 50 ton-meter), a single-row four-point contact ball slewing bearing offers the best cost-performance ratio. For large luffing jib tower crane slewing bearing applications (50+ ton-meter), cross roller or three-row roller bearings provide higher tilting moment capacity and longer service life.

Q: How do I select the right slewing bearing size for my crane?

A: Key parameters: (1) Maximum lifting capacity and working radius — determines tilting moment, (2) Bolt circle diameter and pattern — must match your crane's mounting flange, (3) Gear specifications (module, number of teeth) — must mesh with your drive pinion, (4) Operating environment — affects seal and material selection. Provide your crane model or existing bearing dimensions for a precise recommendation.

Q: Are your slewing bearings interchangeable with Liebherr / Terex / Manitowoc OEM parts?

A: Yes. We manufacture direct replacement slewing bearings matching OEM specifications for Liebherr, Terex-Demag, Grove/Manitowoc, Tadano, Kobelco, and other major crane brands.

Contact Us

For technical consultation, 3D drawings, or custom Crane Slewing Ring solutions, contact our engineering team at mia@hgb-bearing.com. Share your crane model and bearing specifications to receive a detailed selection recommendation.