Rotary Swing Bearing Description
The YNF16980 slewing bearing is a high-precision rotary component designed for excavators and heavy machinery. It features an outer diameter of 462mm, inner diameter of 289.5mm, and height of 46mm, with a bolt pattern of 18+22 holes. This configuration allows stable installation and even load distribution across the machine’s swing mechanism. It is engineered to handle combined axial, radial, and overturning loads with minimal wear. Ideal for OEM replacement or inventory stocking, this bearing enhances swing system reliability and minimizes downtime during operation.
Discover our full line of excavator swing barings for various equipment models.
Slewing Bearing Technical/Data Sheet
| Outer Diameter (OD) | 462 mm |
| Inner Diameter (ID) | 289.5 mm |
| Bolt Holes | 18 (inner) + 22 (outer) |
| Pitch Circle Diameter | 410 / 366 mm |
| Product Type | Slewing Bearing / Rotary Swing Ring |
| Application | Excavator Upper Body Rotation |
| Material | Hardened Alloy Steel |
| Surface Treatment | Induction Hardened Raceways |
| Payment Terms | T/T, Western Union, L/C Available |
| Shipping | Air, Sea, Express |
Rotary Bearing Applications
| Application Field | Description |
| Excavator Rotation Assembly | Ensures smooth upper body swing during digging and loading. |
| Maintenance and Repairs | Suitable for field service replacements of swing units. |
| OEM & Aftermarket Stocking | Ideal for dealers stocking slewing components. |
| Heavy Construction Equipment | Works in demanding environments with high dynamic loads. |
4423-43000-0 Swing Bearing Detail Display
Related Products
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YNF16979 Slewing Bearing OD486 20+22 Holes
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Excavator Swing Shaft YNF16932
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Rotary Reducer Gear for Mini and Mid Excavators
FAQs
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Q: Does this bearing come pre-greased?
A: Bearings are supplied dry; grease must be applied during installation for optimal performance.
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Q: Can this fit other Komatsu or Hitachi models?
A: Fitment depends on the swing gearbox and chassis structure. Please confirm dimensions or contact us for cross-reference.
Knowledge Base
Slewing bearings must balance radial, axial, and moment loads. The dual bolt pattern on YNF16980 improves mounting rigidity, while hardened surfaces reduce wear in continuous swing applications. Proper lubrication and alignment during installation are essential for maximizing bearing life.
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