Kobelco SK115SR SK135 Excavator Slewing Gearbox YY02-03001 YX32W00002F2
Kobelco SK115SR SK135 excavator Slewing Gearbox YY02-03001 YX32W00002F2
| Appliion | Excavator |
| Part name | Belparts swing gearbox |
| part number |
YY02-03001 YX32W00002F2 |
| Model | SK115SR SK135 |
| Brand | kobelco |
| Payment term | T/T, Paypal, Trade assurance, or as required |
| Delivery | 3 days after the payment received |
| Shipment | by sea, by air, by express, or as required |
Construction & Key Components
The swing gearbox consists of several essential parts:
(A) Hydraulic Motor
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Converts hydraulic energy into mechanical rotation.
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Common types: Axial piston motors, gerotor motors.
(B) Planetary Gear System
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Sun gear: Driven by the motor.
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Planet gears: Rotate around the sun gear, mounted on a carrier.
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Ring gear: Stationary or rotating, depending on design.
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Provides high torque output while maintaining compact size.
(C) Slewing Bearing (Swing Ring)
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Large-diameter ball or roller bearing that supports the excavator’s rotation.
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Can be internal gear type (common in modern excavators) or external gear type.
(D) Brake System
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Hydraulic disc brake (common in modern excavators).
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Mechanical brake (used in older models).
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Prevents free rotation when the machine is idle.
(E) Housing & Seals
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Cast iron or steel housing for durability.
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Oil seals and gaskets prevent leakage and contamination.
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