LTZC excavator swing bearing

LTZC excavator swing bearing utilize high-strength alloy steel 42CrMo/50Mn/C45 and a deep hardening process, combined with an optimized raceway structure design. For example, a four-point contact ball bearing generates twice the contact points, resulting in superior load-bearing capacity, excellent impact resistance, and an exceptionally long service life. Leveraging LTZC's fully independent manufacturing system and international certification standards, LTZC provides a more stable and durable slewing solution for medium and large excavators.

LTZC Excavator Slewing Bearing Core Advantages

1. Superior Load-Bearing Structure Design

LTZC employs an optimized four-point contact ball bearing structure and a cross-roller bearing composite design, capable of simultaneously withstanding high axial loads, radial loads, and large overturning moments, making it particularly suitable for the long-term heavy-duty operation of medium and large excavators.

2. Independent Precision Manufacturing System

Relying on LTZC's complete production process chain, from forging and heat treatment to CNC precision bearing machining, the entire process is completed independently. Key dimensional accuracy is consistently controlled at the ±0.01mm level, ensuring the consistency and reliability of every slewing bearing.

3. High-Strength Materials and Deep Hardening Process

LTZC uses special alloy structural steel, undergoing multiple quenching and tempering treatments. The raceway surface hardness reaches HRC58–62, with a deeper hardened layer, resulting in fatigue life superior to industry standards.

4. Superior Impact and Off-center Load Resistance

Designed for the frequent start-stop and impact loading characteristics of excavators, LTZC optimizes raceway curvature and contact stress distribution, maintaining stable rotation even under impact loads and off-center loads.

5. Multiple Sealing Protection System

LTZC employs various bearing seals and bearing lubrication, such as oil-resistant rubber seals, low-temperature rubber seals, and labyrinth seals, effectively preventing the intrusion of mud, dust, and moisture, maintaining stable lubrication even in highly polluted environments such as mines, construction sites, and ports.

6. Customizable Bearing Capabilities

LTZC can provide customized bearing solutions for gear profile, module, gear width, and preload according to the customer's main machine structure, installation space, and load requirements, achieving a high degree of integration with the original excavator structure.

7. International Certification Endorsement

LTZC products comply with ISO 9001/14001/45001 quality systems and have passed international certifications such as CCS, BV, and ABS, making them suitable for export excavators and the global construction machinery market.

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LTZC crane slew ring

LTZC crane slewing ring are integrally forged from high-purity special alloy steel. The raceways undergo deep hardening treatment, achieving a surface hardness of HRC58–62 and an effective hardened layer depth ≥ 4 mm. A single bearing can have a maximum outer diameter of 12,000 mm, an axial load capacity exceeding 10,000 kN, and an overturning moment capacity exceeding 12,000 kN·m. Utilizing LTZC's proprietary CNC precision machining system, axial runout is controlled to ≤0.05 mm, and radial runout to ≤0.04 mm, significantly improving the precision and operational stability of the slewing bearings. These products are widely used in heavy-duty equipment such as crawler cranes, all-terrain cranes, and port cranes, providing reliable slewing bearing solutions from a leading slewing bearing manufacturer in the high-end slewing bearing/slewing ring/crane bearing/heavy-duty bearing /precision bearing field.

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