ZZ Slewing Bearing Co., Ltd.
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Bearing Replacement & Repair
Bearing Replacement

When a slewing bearing has reached the end of its service life or starts showing signs of serious problems like unusual noises or even seizing up, it might be time for a replacement. If an inspection reveals that repairing the bearing is not feasible or would be too costly, replacing it becomes the best option.

However, if the issue is limited to a specific part, such as worn seals, damaged rolling elements, or a single worn ring, you can replace just that component instead of the entire bearing. We offer remote support to guide you through these replacements, whether it’s complimentary or at a reasonable cost, depending on your situation.

When installing a new bearing, consider the specific wear or damage in the old one. This insight allows for an optimized design in the replacement bearing, enhancing its performance and extending its lifespan.

Bearing Repair

When a slewing bearing shows signs of damage, the first step is to conduct a thorough inspection and measurement to understand the extent of the issue. The results of this assessment will guide the development of a specific repair plan tailored to address the identified problems.

Inspection and Measurement Before Repair:
  • The process includes checking the bearing's rotation accuracy, measuring dimensions, and conducting defect inspections such as Ultrasonic Testing (UT) and Magnetic Particle Testing (MT)
  • If the customer has the capability to perform these inspections, they can provide us with their report, and we will use that to create a repair plan
  • If the customer is unable to conduct these inspections, they can entrust the task to us. Depending on the situation, we may charge a fee for this service
Detailed Inspection Process:
Inspection of axial clearance
Inspection of axial clearance
Inspection of gear runout
Inspection of gear runout
Inspection of radial runout
Inspection of radial runout
Simultaneous inspection of axial runout and radial runout
Simultaneous inspection of axial runout and radial runout
Magnetic particle flaw detection of rolling elements
Magnetic particle flaw detection of rolling elements
Liquid penetrant testing of quenched gear teeth
Liquid penetrant testing of quenched gear teeth
Material reassessment
Material reassessment
Roller classification inspection
Roller classification inspection
Need Custom Bearing Solutions for Your Next Project?
Contact Us

ZZ is your trusted partner in manufacturing high-quality slewing bearings and custom components. Whether it's wind energy, tunnel boring, or marine applications, we deliver reliable solutions tailored to your specific needs and budget.

Our Services
Customized Bearings Production Customized Bearings Production
Bearing Installation & Commissioning Bearing Installation & Commissioning
Bearing Inspection & Maintenance Bearing Inspection & Maintenance
Bearing Replacement & Repair Bearing Replacement & Repair
Spare Parts Supply & Shipping Spare Parts Supply & Shipping
Bearings & Bearing Components that We Manufacture

Custom solutions that fit your needs

Four-Point Contact Ball Slewing Bearings
Four-Point Contact Ball Slewing Bearings
Double-Row Ball Slewing Bearings
Double-Row Ball Slewing Bearings
Main Bearings (Tapered Roller Bearings)
Main Bearings (Tapered Roller Bearings)
Pitch Bearings (Four-Point Contact Ball Bearings)
Pitch Bearings (Four-Point Contact Ball Bearings)
Yaw Bearings
Yaw Bearings
TBM Main Bearings (Cutter Head Bearings)
TBM Main Bearings (Cutter Head Bearings)
ZZ Slewing Bearing Co., Ltd.
ZZ Slewing Bearing Co., Ltd.
Slewing Bearing Solutions
sales@slewingbearingfactory.com
+86-21-51061761
Contact Us
Why Us
  • R&D
  • Manufacturing
  • Quality Control
Service
  • Customized Bearings Production
  • Bearing Mounting & Commissioning
  • Bearing Inspection & Maintenance
  • Bearing Replacement & Repair
  • Spare Parts Supply & Shipping
Products
  • Slewing Bearings / Slewing Rings
  • Spherical Plain Bearings
  • Wind Turbine Bearings
  • Tunnel Boring Machine Bearings
  • Slewing Bearings for Large Marine Equipment
  • Bearing Components
Application
  • Energy
  • Tunneling
  • Ferris Wheel
  • Port Equipment
  • Construction Equipment
  • Mining Equipment
  • Stacker Reclaimer
  • Floating Crane
  • Machine Tool
  • Metallurgical Equipment
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