OEM-quality complete swing drive assembly (hydraulic motor + planetary gearbox) for JCB 85Z, 86C, 90Z and 100C Series mini excavators. The assembly consists of an axial piston hydraulic motor integrated with a multi-stage planetary reduction gearbox. It provides precise superstructure control, ensuring smooth swing movements while maintaining the high torque required for working in demanding terrain. Equipped with an integrated hydraulic parking brake. OEM quality - perfect fit and performance identical to the original factory component.
| Part Type | Complete swing drive (axial piston motor + planetary gearbox) |
|---|---|
| Parts Category | Hydraulic System / Swing Drive |
| Part Number | 333/W4439 |
| Construction | Axial piston motor integrated with gearbox |
| Pinion | 11 teeth |
| Mounting | 8 mounting holes |
| Brake | Integrated hydraulic parking brake |
| Quality | OEM (first fit quality) |
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Brand: AM
334/U0772
Brand: AM
20/925543
333-W4439 333W4439
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