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Precision Slewing Bearings for Heavy Machinery

Founded in 2009 and based in Xuzhou — China's engineering machinery hub — Ken Machinery is a trusted manufacturer of high-performance slewing bearings. Our products power excavators from global leaders including SANY, LIUGONG, Caterpillar, Hitachi, and XCMG.

15+ Years
Industry Experience
50+ Countries
Global Reach
99.2%
Customer Retention
Slewing Bearing Product
Ken Machinery Factory

About Ken Machinery

Founded in 2009, KEN MACHINERY is located in Xuzhou — China’s largest engineering machinery city. We specialize in the research, development, production, and sales of slewing bearings.

Our excavator slewing bearings are mature, high-demand products and serve as the core of our business. Trusted by leading manufacturers such as SANY, LIUGONG, Caterpillar, Hitachi, and XCMG, we’ve built our reputation on quality, stability, consistency, and exceptional after-sales service.

Customer-Oriented Approach
Best-in-Class Quality Assurance
Most Competitive Pricing
Reliable After-Sale Support

When you choose Ken Machinery, you’re choosing a partner you can trust — one that delivers performance, durability, and peace of mind.

Our Products

We manufacture high-precision slewing bearings designed for durability, smooth rotation, and heavy-duty performance in excavators and other industrial machinery.

Excavator Slewing Bearing Model KB-2050

Excavator Slewing Bearing KB-2050

High-load capacity bearing for 20-25 ton excavators. Ideal for SANY SY215, XCMG XE215 models.

  • Inner Diameter: 500mm
  • Outer Diameter: 720mm
  • Gear Type: Internal
  • Material: 50Mn, hardened
Slewing Bearing KB-3060

Slewing Bearing KB-3060

Designed for 30-ton class excavators. Used in LIUGONG, Caterpillar, and Hitachi models.

  • Inner Diameter: 600mm
  • Outer Diameter: 860mm
  • Gear Type: External
  • Sealed for Dust/Water Resistance
Compact Excavator Bearing KB-1540

Compact Excavator Bearing KB-1540

Optimized for mini and compact excavators. Lightweight yet durable construction.

  • Inner Diameter: 400mm
  • Outer Diameter: 580mm
  • Double Row Ball Design
  • Corrosion-Resistant Coating
Heavy-Duty Bearing KB-4080

Heavy-Duty Bearing KB-4080

For large excavators and cranes. Engineered for extreme torque and continuous operation.

  • Inner Diameter: 800mm
  • Outer Diameter: 1100mm
  • Three-Row Roller Design
  • High Load & Moment Capacity
Custom Slewing Ring CR-5000

Custom Slewing Ring CR-5000

Tailored solutions for OEMs and specialized machinery. CNC precision machining.

  • Custom Dimensions Available
  • Multiple Gear Options
  • OEM/ODM Supported
  • ISO 9001 Certified Production
Double-Axis Bearing DB-2500

Double-Axis Bearing DB-2500

For applications requiring rotation on multiple axes. Used in drilling rigs and platforms.

  • Dual Rotation Capability
  • High Torsional Rigidity
  • Precision Ground Raceways
  • Lubrication Channels Integrated
High-Speed Slewing Bearing HS-1800

High-Speed Slewing Bearing HS-1800

Optimized for fast-rotation applications such as material handlers and cranes.

  • Low Friction Design
  • High RPM Tolerance
  • Pre-Lubricated Sealed Units
  • Vibration Dampening
Marine Slewing Bearing MB-3500

Marine Slewing Bearing MB-3500

Saltwater-resistant design for offshore and marine applications.

  • Stainless Steel Options
  • Anti-Corrosion Coating
  • IP68 Sealing Standard
  • Suitable for Harsh Environments

Why Choose Ken Machinery?

We combine advanced engineering, rigorous quality control, and customer-first service to deliver superior slewing bearings.

Quality Assurance

Every bearing undergoes strict inspection and testing to ensure dimensional accuracy, hardness, and performance under load.

Advanced Manufacturing

CNC machining, induction hardening, and precision grinding ensure consistent, high-tolerance production.

Professional Support

Our engineering team provides technical guidance, installation support, and troubleshooting assistance.

After-Sale Service

Fast response, warranty coverage, and replacement parts ensure long-term reliability and uptime.

15+
Years in Business
500+
Products Delivered
98.7%
On-Time Delivery
24/7
Customer Support

Frequently Asked Questions

What types of machines use your slewing bearings?

Our bearings are used in excavators, cranes, drilling rigs, material handlers, and other heavy machinery requiring rotational movement.

Do you offer custom slewing bearings?

Yes, we provide OEM and ODM services. Share your specifications and we’ll design and manufacture to your exact requirements.

What is the warranty on your products?

We offer a standard 12-month warranty covering material and workmanship defects under normal operating conditions.

How do I install a slewing bearing?

Proper installation is critical. We provide detailed technical guides and can offer remote support during setup.

Can I get samples before bulk order?

Yes, sample units are available upon request. Contact us for pricing and lead time.

Get in Touch

Reach out to our team for product inquiries, technical support, or custom solutions.

Contact Information

  • kenmachinery@hotmail.com
  • +86 151 5214 9356
  • +86 151 5214 9356
  • +86-516-8309 0335
  • NO.60, The East Road, Xuzhou, P.R.China

Visit Our Website

For detailed product catalogs, technical drawings, and company updates.

Visit Official Website

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