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Slewing Bearings for Cranes

CHG provides slewing bearing solutions for tower cranes, mobile cranes, crawler cranes, marine cranes and lifting equipment carrying high axial loads, radial loads and overturning moments under repeated lifting cycles.

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Application

Application Challenges

Large Overturning Moments

Boom outreach and lifted loads create high tilting moments at the slewing connection.

Dynamic Lifting Loads

Hoisting, braking and wind can create changing and impact loads.

Low-speed Heavy Rotation

Crane slewing systems rotate slowly under high load and frequent start-stop cycles.

Outdoor & Marine Exposure

Cranes may operate in rain, salt spray, dust and wide temperature ranges.

Safety & Inspection

Critical lifting equipment requires traceable inspection and reliable service support.

Types

Recommended Slewing Bearing Structures

Selection

Selection Information

01

Information Customers Can Provide

Crane type and duty classification
Rated lifting load and working radius
Maximum axial/radial load and tilting moment
Wind and dynamic load factors
Rotation speed and cycles
Gear type, module and backlash
Mounting bolts, flange rigidity and dimensions
Corrosion, sealing, lubrication and drawing

02

CHG Assessable Content

Suitable slewing bearing structure
Static and dynamic load capacity
Raceway diameter, ring size and central opening
Gear type, module, accuracy and backlash
Mounting-hole and bolt-load requirements
Material, heat treatment and hardness
Sealing, lubrication and corrosion protection
Technical proposal, drawing review, quotation and delivery

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ADVANTAGES

Why Choose CHG

Four Main Structure Options

CHG provides four-point contact ball, double-row ball, three-row roller and crossed roller slewing bearing solutions.

Application & Load Review

Bearing structure can be reviewed according to axial load, radial load, tilting moment, dynamic factors, speed and duty cycle.

Custom Manufacturing

Custom support by drawing, dimensions, gear type, bolt-hole arrangement, sealing, lubrication and application requirements.

Quality & Inspection Support

Material certificates, heat treatment records, dimensional inspection, gear inspection and product photos can be provided according to order requirements.

Related

Related Applications

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    FAQ

    Slewing Bearings for Cranes FAQ

    Please provide the equipment type, bearing number or mounting dimensions, axial load, radial load, tilting moment, speed, gear type, quantity and drawing if available.

    CHG provides four-point contact ball, double-row ball, three-row roller and crossed roller slewing bearing solutions.

    Yes. Internal gear, external gear or gearless structures, gear module, tooth number, bolt-hole pattern, seals and lubrication can be customized.

    Yes. Custom and replacement solutions can be reviewed according to 2D/3D drawings, bearing numbers, dimensions, gear data and application conditions.

    Material certificates, heat treatment records, dimensional inspection, raceway/gear inspection, product photos and packing photos can be provided according to order requirements.

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