mini excavator swing bearing
Brand: PRS
Category: Internal toothed/External toothed/Needleless
Size: Various sizes available, custom designs can be made to order
Thickness: Various sizes available, custom designs can be made to order
- Product Description
Mini Excavator Swing Bearing - Professional Solutions by PRS®
When your compact excavator demands reliable 360-degree rotation under challenging conditions, the mini excavator swing bearing becomes the most critical component connecting upper structure to undercarriage. This precision-engineered slewing ring bolsters combined pivotal, outspread, and tilting minute loads whereas empowering smooth rotational development. PRS® specializes in fabricating high-performance items planned for hardware beneath 6 tons, conveying predominant stack dispersion and amplified benefit life in requesting applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Bearing Type | Single-row four-point contact ball bearing |
| Gear Configuration | Internal tooth / External tooth / No gear |
| Material | Raceway: 50Mn steel, Gear ring: 42CrMo alloy steel |
| Heat Treatment | Induction hardened raceways |
| Sealing | Double-lip seals for contamination protection |
| Lubrication | High-temperature lithium grease |
| Load Capacity | Customized based on excavator specifications |
| Operating Temperature | -30°C to +80°C |
| Precision Grade | P6 / P5 available |
Product Structure and Working Principle
The mini excavator swing bearing features a sophisticated single-row four-point contact ball design. The inner ring connects directly to the excavator's chassis frame, while the outer ring bolts to the upper house structure. Rolling elements distribute loads across hardened raceways, enabling smooth rotational movement under heavy operational stresses.
The coordinates adapt ring networks with the swing motor's pinion adapt, giving exact rotational control. Double-lip seals avoid defilement from mud, sand, and flotsam and jetsam ordinarily experienced in development situations. This plan guarantees reliable execution over thousands of operational cycles.
Key Performance Advantages
Superior Stack Distribution
The four-point contact setup successfully oversees combined stacking conditions. Hub strengths from lifting operations, spiral powers from amplified boom positions, and tilting minutes from uneven landscape disseminate equitably over rolling components. This anticipates push concentration and amplifies bearing life.
Enhanced Defilement Resistance
Advanced fixing innovation secures inner components from rough particles common in unearthing work. The dual-seal framework keeps up oil keenness whereas anticipating water entrance amid control washing or damp conditions.
Optimized Adapt Durability
Heat-treated 42CrMo equip teeth stand up to wear and affect stacking from visit start-stop operations. The exact adapt geometry guarantees smooth control transmission and diminishes clamor levels amid operation.

Application-Specific Engineering
Urban Development Projects
Compact excavators working in kept spaces require exact control and negligible vibration. Our swing orientation empower smooth feathering developments basic for trenching around utilities or working close structures. The low-friction plan diminishes administrator weariness amid amplified accuracy work.
Agricultural and Arranging Operations
Uneven territory makes challenging stacking conditions with tall tilting minutes. The bearing's vigorous structure keeps up steadiness whereas the machine works on slants or lifts materials at expanded reach. Prevalent seal security handles sloppy, debris-filled situations common in rural applications.
Demolition and Remodel Work
Indoor pulverization produces extraordinary defilement and stun loads from water powered breakers. Our orientation highlight improved raceway case profundity to stand up to brinelling from affect powers whereas keeping up seal judgment against fine tidy infiltration.
Manufacturing Excellence
PRS® leverages 20+ years of bearing expertise with modern manufacturing capabilities. Our 15,000 m² production facility houses 200+ precision machines capable of producing bearings from 10mm to 5000mm diameter. Each mini excavator swing bearing undergoes strict quality control with 99.9% factory pass rate.
Our team of 35 technical engineers provides comprehensive support from initial design through field service. Whether you need standard configurations or custom solutions for specific excavator models, we deliver engineering-driven solutions tailored to real working conditions.
Quality Assurance and Certification
Every bearing meets ISO 9001 quality standards with full traceability from raw materials through final inspection. Our 6S production management ensures consistent manufacturing processes, while certified ISO 14001 and ISO 45001 compliance demonstrates environmental and safety commitment.
Comprehensive testing includes dimensional verification, hardness testing, and rotational performance validation. This rigorous approach ensures each product delivers reliable performance throughout its operational life.
Packaging & shipping
Your goods are unique, and their journey should be flawless. Therefore, we offer professional and customized packaging services. Our experienced team will evaluate your goods' characteristics, transportation route, and environmental requirements to recommend the most secure solution.

Certificaiton

Partners
Your trust, we cherish in heart all times and will reciprocate that trust with unwavering quality.

Technical Support and Service
PRS® provides complete lifecycle support for your mini excavator swing bearing applications. Our technical team assists with proper selection, installation guidance, and maintenance recommendations. We maintain extensive inventory for fast delivery of standard models while offering flexible customization for non-standard requirements.
For technical consultation or custom bearing solutions, contact our engineering team at ljh@lyprs.com. We're committed to helping you optimize equipment reliability and operational efficiency through superior bearing technology.











