Crawler excavator EX60 Slew Bearing Repair 4376753 16080615 16080621 slew ring bearing
Crawler excavator EX60 Slew Bearing Repair 4376753 16080615 16080621 slew ring bearing
List of spare parts
| # | Part No | Part Name | Qty. |
|---|---|---|---|
| 9184497 | SWING; CIRCLE | 1 | |
| 00 | . RACE; OUTER | 1 | |
| 01 | . RACE; INNER | 1 | |
| 02 | 4127708 | . SUPPORT | 99 |
| 03 | J75481 | . FITTING; GREASE | 2 |
| 04 | 4289757 | . SEAL | 1 |
| 04 | 4634010 | . SEAL | 1 |
| 05 | 4315493 | . SEAL | 1 |
| 05 | 4634010 | . SEAL | 1 |
| 06 | 4428919 | . BALL | 99 |
Materials Used:
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Rings: High-carbon chromium steel (e.g., 42CrMo, 50Mn).
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Rolling Elements: Hardened alloy steel.
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Gear Teeth: Induction-hardened for wear resistance.
Manufacturing Steps:
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Forging – Shaping steel into rings.
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Machining – Precision cutting of raceways and gear teeth.
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Heat Treatment – Hardening for durability.
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Grinding & Assembly – Smoothing surfaces and adding seals.
Signs of a Failing Swing Bearing
A damaged swing bearing can lead to machine downtime or safety hazards. Watch for:
Unusual Noises (grinding, clicking when rotating)
Excessive Play/Wobble (loose upper structure)
Difficulty Rotating (jerky movement)
Grease Leakage (seal damage)
Uneven Wear (visible damage on gear teeth)
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