Excavators Spare Parts Slewing Bearing Swing Circle for Hyundai
Engineered for smooth and stable upper structure rotation, our Hyundai slewing bearings deliver exceptional durability and load-bearing capacity. Built to OEM standards for perfect fit and performance in various Hyundai excavator models.
| 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 called swing bearing or turntable bearing—is a crucial component in Hyundai excavators, allowing 360° rotation of the upper structure. It transfers axial, radial, and tilting moment loads between the upper and lower chassis, ensuring smooth rotation even under heavy digging or lifting operations. High-precision gear machining and hardened raceways contribute to excellent rotation stability and service life.
Material & Manufacturing Process
Our slewing bearings are made from high-quality 50Mn or 42CrMo alloy steel, selected for their toughness, fatigue strength, and wear resistance. The manufacturing process includes:
- Forging: Heat-treated forged rings ensure structural integrity and strength.
- Rough & Finish Machining: Precision CNC equipment is used to control tolerances and surface flatness.
- Gear Cutting: Gear teeth (internal or external) are milled or ground to strict specifications.
- Raceway Hardening: Induction hardening provides surface hardness up to HRC 55-62, improving wear resistance.
- Assembly & Preload Adjustment: Ball or roller elements are assembled with precise clearances to ensure smooth rotation without backlash.
- Surface Treatment: Anti-rust coatings protect against corrosion during storage and operation.
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.
Hyundai Model Compatibility
We have slewing bearings that can match the following models.
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| HYUNDAI | R55 | R55-3 | R55-7 | R60 | R60-7 | R60CR-9 | R75-7 | R80 |
| R80-7 | R80CR-9 | R130-5 | R130-7 | R140LC-9 | R145LCR-9 | R150 | R150LC-7 | |
| R160LC-3 | R180LC-3 | R200 | R200-5 | R210 | R210-3 | R210LC-3 | R210LC-7 | |
| R215-7 | R220-5 | R220LC-9 | R225-7 | R235LCR-9 | R250LC-3 | R260-5 | R260LC-9 | |
| R265 | R275 | R290 | R290LC-3 | R290LC-7 | R300 | R300-5 | R300LC-9 | |
| R305 | R320 | R320LC-9 | R330LC-9 | R360 | R360LC-9 | R380LC-9 | R385 | |
| R420 | R450-3 | R450-5 | R450LC-7 | R480LC-9 | R500LC-7A | R520LC-9 | R800LC-7A | |
| HX90A | HX1000L | HX130A LCR | HX145LCR | HX220L | HX235LCR | HX260L | HX300L | |
| HX330L | HX380L | HX480L | HX520L | HX800L | HW100A | HW140 | HW180 | |
| HW210 | ||||||||
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.
Compatibility with Hyundai Excavators
This slewing bearing is designed to fit various Hyundai models, including but not limited to:
| Excavator Model | Operating Weight (Ton) | Bearing Type | OEM Support |
|---|---|---|---|
| Hyundai R210LC-7 | 21 Ton | External Gear | Available |
| Hyundai R225LC-9 | 22.5 Ton | Internal Gear | Available |
| Hyundai R290LC-7 | 29 Ton | External Gear | Available |
| Hyundai R305-7 | 30.5 Ton | Internal Gear | Available |
For specific sizes or part number references, please contact our technical team.
OEM Reference & Replacement Guide
Our slewing bearings are interchangeable with original Hyundai parts and manufactured according to OEM dimensions. We support customized services based on:
- OEM part numbers
- Excavator model and serial numbers
- Engineering drawings or specifications
Quality Control & Testing
We ensure strict quality assurance at each step:
- Dimensional inspection using CMM and gauges
- Gear run-out and hardness test
- Raceway clearance and preload verification
- Static and dynamic load simulation
- Final rotation test before packaging
Each unit is tracked with unique batch numbers for traceability and post-sale support.
Maintenance Tips for Extended Lifespan
To maximize service life of your Hyundai 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.
