Kobelco/VA16200C0/SK200/210 Track Roller Assembly/heavy-duty excavator undercarriage parts manufacture-China rollers factory supply direct.
Product Specifications
The Kobelco SK200/210 track roller assembly is a crucial undercarriage component that supports the weight of the excavator and ensures smooth track movement. Here’s a detailed breakdown of its function, common issues, and replacement guidance:
Function of the Track Roller Assembly:
Supports the excavator’s weight and distributes it evenly across the track chain.
Reduces friction between the track chain and the undercarriage frame.
Helps maintain proper track alignment and tension.
Common Issues:
Wear & Seals Failure – Leaking grease or excessive play indicates seal damage or bearing wear.
Noise/Vibration – Grinding or rumbling sounds suggest bearing failure.
Misalignment – Uneven roller wear can cause track derailment or premature failure.
Corrosion/Pitting – Common in harsh environments (mud, salt, abrasive material).
Replacement Signs:
Visible cracks or flanges breaking off.
Excessive side-to-side movement.
Grease leakage despite seal replacement.
Flat spots or uneven wear on the roller surface.
Compatibility & Part Numbers:
The SK200 (6.5–7.5-ton class) and SK210 (21-ton class) may share some undercarriage components, but always verify exact model specs.
Common Kobelco part numbers for track rollers (confirm with your supplier):
Original Kobelco: 208-21-12410 (example; varies by model year).
Aftermarket equivalents (e.g., Berco, ITR, Komatsu-compatible rollers may fit with modifications).
Replacement Tips:
Lift the excavator safely to remove track tension.
Remove the track (may require splitting if not endless).
Unbolt the roller assembly (check for shims/spacers).
Inspect adjacent components (idlers, sprockets, bushings) while replacing.
Torque bolts to spec and lubricate as needed.
Aftermarket vs. OEM Considerations:
OEM rollers ensure exact fit but are costly.
Aftermarket options (e.g., Topa, Hercules, Lemken) can be cost-effective but verify quality.
Maintenance Advice:
Regularly clean undercarriage to prevent debris buildup.
Check grease seals and lubricate per Kobelco’s manual.
Rotate track links periodically to distribute wear.
If you need a specific part number or supplier recommendation, confirm your exact Kobelco model (e.g., SK200LC-5, SK210-8) and year for accurate matching. Let me know if you'd like help sourcing parts!
