Guangzhou Hydomi Machinery Co.,LTD
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Doosan DX230 172447-57600 Slewing ring bearings for crawler excavator 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 |
There are two main types:
Uses steel balls as rolling elements.
Best for small to medium excavators (lower load capacity).
Advantages: Smoother rotation, lower cost.
Disadvantages: Less durable under extreme loads.
Uses cylindrical or tapered rollers.
Designed for large excavators and heavy-duty applications.
Advantages: Higher load capacity, longer lifespan.
Disadvantages: Slightly less smooth rotation.
Small excavators (1-20 tons): Usually ball-type.
Large excavators (20+ tons): Typically roller-type.
Rings: High-carbon chromium steel (e.g., 42CrMo, 50Mn).
Rolling Elements: Hardened alloy steel.
Gear Teeth: Induction-hardened for wear resistance.
Forging – Shaping steel into rings.
Machining – Precision cutting of raceways and gear teeth.
Heat Treatment – Hardening for durability.
Grinding & Assembly – Smoothing surfaces and adding seals.
