Wholesale Excavator Swing Slewing Bearing Ring for Liebherr
Upgrade your Liebherr excavator’s swing performance with our high-strength slewing bearing. Designed for heavy-duty applications, this component ensures smooth rotation, stable load handling, and long-term reliability under demanding site conditions.
| Material | 50Mn/42CrMo |
|---|---|
| Surface Hardness | HRC58-62 |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
The slewing bearing—also known as the swing ring—is the core rotating element between the upper and lower structure of a Liebherr excavator. It allows the cabin and arm to rotate 360° while supporting axial, radial, and tilting loads during digging or lifting operations. Its precise structure ensures stable movement and accurate alignment under harsh work environments.
Material & Manufacturing Advantages
Our Liebherr slewing bearings are manufactured with advanced materials and processes:
- Forged Alloy Steel Rings: Both inner and outer rings are made from 42CrMo or 50Mn steel, heat-treated for surface hardness (HRC ≥ 55) and core toughness.
- Gear Teeth Machining: Internal or external gear teeth (depending on model) are precisely milled with CNC equipment for smooth engagement and minimal backlash.
- Rolling Elements: Chromium alloy steel balls or rollers are uniformly hardened and polished for low friction and extended wear resistance.
- Sealing Structure: Double-lip rubber seals keep grease in and contaminants out, ensuring long-term protection in muddy or dusty environments.
Forged Ring Pre-Machining
Our process begins with high-quality alloy steel rings (typically 42CrMo), forged and polished for flatness and crack-free integrity. These rings form the structural base of both inner and outer components.
Gear Cutting on Inner Ring
The inner ring undergoes CNC gear milling to create a tooth profile that precisely matches swing pinions. After cutting, teeth are quenched and tempered to resist wear and deformation during high-load engagement.
Final Packing & Storage
After inspection, the slewing bearings are coated with anti-rust oil, wrapped in plastic, and packed in strong wooden crates. Labels include model code, part number, and batch information for easy identification and shipping control.
Liebherr Model Compatibility
We have slewing bearings that can match the following models.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| LIEBHERR | R 914 | R 916 | R 918 | R 920 | R 922 | R 924 | R 926 | R 930 |
| R 934 | R 938 | R 944 | R 950 | R 954 | R 960 | R 964 | R 970 | |
| R 974 | R 976 | R 980 | R 984 | R 988 | R 1100 | R 1200 | A 900 | |
| A 902 | A 904 | A 906 | A 908 | A 912 | A 914 | A 916 | A 918 | |
| A 920 | A 922 | A 924 | A 926 | A 930 | A 934 | A 938 | A 950 | |
| A 954 | A 956 | A 960 | A 964 | PR 736 | PR 746 | PR 756 | PR 766 | |
Not sure if this bearing fits your machine? Just send us your serial number, part drawing, or old bearing photo, and our technical team will confirm compatibility within 12 hours.
OEM Fitment
This slewing bearing is precisely designed for use in the following Liebherr excavator models:
| Model | Operating Weight (Ton) | Gear Type | Bearing Type |
|---|---|---|---|
| Liebherr R914 | ~15 Ton | Internal | Single Row Ball |
| Liebherr R924 | ~25 Ton | Internal | Single Row Ball |
| Liebherr R934 | ~35 Ton | External | Cross Roller |
| Liebherr R944 | ~40 Ton | External | Cross Roller |
For other models or custom dimensions, please contact us for tailored solutions.
Inspection & Quality Control
Every unit is subjected to rigorous testing before shipment:
- Dimensional inspection of gear precision
- Hardness test (surface and core)
- Runout and backlash measurements
- Rotation torque and noise test
- Seal integrity & greasing check
Application Scenarios
Our slewing bearings are ideal for:
- General excavation and grading work
- Rock and demolition operations
- Lifting and material handling applications
- Confined or rotating space environments
- Built to perform in mud, dust, rain, or freezing conditions.
Maintenance Tips for Extended Lifespan
To maximize service life of your slewing bearing:
- Regularly grease the raceway as per operation manual
- Check for abnormal noise or backlash in the swing mechanism
- Avoid side impacts and overloads during digging or lifting
- Replace worn seals to prevent dirt and moisture ingress
- Inspect gear teeth periodically for signs of wear or pitting
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
