GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED
| Payment Terms | T/T, Paypal and Trade Assurance |
| Supply Ability | 1000pieces |
| Delivery Time | 1-7days |
| Packaging Details | Wooden packing |
| Model Name | ZX70 ZX80 ZX80LCK |
| Part Number | 4445648 4470057 |
| Part name | Slewing Gearbox |
| Brand | hitachi |
| Material | Steel |
| Means of Transport | By Sea, Air or DHL |
| Brand Name | Belparts |
| Model Number | ZX70 ZX80 |
| Place of Origin | Made in China |
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Product Specification
| Payment Terms | T/T, Paypal and Trade Assurance | Supply Ability | 1000pieces |
| Delivery Time | 1-7days | Packaging Details | Wooden packing |
| Model Name | ZX70 ZX80 ZX80LCK | Part Number | 4445648 4470057 |
| Part name | Slewing Gearbox | Brand | hitachi |
| Material | Steel | Means of Transport | By Sea, Air or DHL |
| Brand Name | Belparts | Model Number | ZX70 ZX80 |
| Place of Origin | Made in China | ||
| High Light | 4470057 Swing Gearbox ，4445648 Swing Gearbox ，Hitachi ZX70 ZX80 ZX80LCK Swing Gearbox | ||
Hitachi ZX70 ZX80 ZX80LCK Swing Gearbox 4445648 4470057 Excavator Slewing Gearbox
| Appliion | Excavator |
| Part name | Swing reduction gearbox |
| Part number | 4445648 447005 |
| Model | ZX70 ZX80 ZX80LCK |
| MOQ | 1PC |
| Warranty | 6 months |
| Payment term | T/T, PayPal, trade assurence |
| Delivery | 3 day after the payment received |
| Shipment | by sea, by air, by express, or as required |
The excavator swing gearbox, also known as the swing drive or slewing gearbox, is a critical component in hydraulic excavators. It enables the upper structure (house) of the excavator to rotate smoothly and efficiently, providing the machine with the necessary maneuverability for digging, lifting, and material handling operations.
This guide explores the working principle, construction, functions, applications, and maintenance of the excavator swing gearbox, offering a comprehensive understanding of its role in heavy machinery.
| Pos. | Part No | Qty | Parts name |
|---|---|---|---|
| 4445648 | [1] | SWING-DEVICE | |
| 00. | 4429255 | [1] | MOTOR;OIL |
| 01. | 4470166 | [8] | BOLT;SOCKET |
| 02. | 4468029 | [1] | PLATE |
| 03. | 4468030 | [1] | GEAR;SUN |
| 04. | 4468031 | [1] | GEAR;SUN |
| 05. | 4397238 | [1] | PLATE;THRUST |
| 06. | 4468032 | [1] | CARRIER |
| 07. | 4397240 | [1] | NUT |
| 08. | 4397241 | [1] | BRG.;ROL. |
| 09. | 4395197 | [1] | SEAL;OIL |
| 10. | 4468033 | [1] | BRG.;ROL. |
| 13. | 942517 | [3] | RING;RETAINING |
| 14. | 4468034 | [3] | GEAR;PLANETARY |
| 15. | 4397245 | [3] | BRG.;NEEDLE |
| 16. | 4468035 | [1] | CARRIER |
| 17. | 4468036 | [1] | GEAR;RING |
| 18. | 4468037 | [3] | GEAR;PLANETARY |
| 20. | 4468038 | [6] | PLATE;THRUST |
| 21. | 4134502 | [3] | PIN;SPRING |
| 22. | 4395205 | [3] | PIN;SPRING |
| 23. | 4468039 | [3] | PIN |
| 24. | 420802 | [1] | CORK |
| 25. | 4468040 | [1] | HOUSING |
| 26. | 4468041 | [1] | PLATE;THRUST |
| 27. | 4468042 | [1] | SPACER |
| 28. | 4468043 | [1] | SHAFT;PROP. |
| 29. | 4468044 | [3] | BRG.;NEEDLE |
The swing gearbox consists of several essential parts:
Converts hydraulic energy into mechanical rotation.
Common types: Axial piston motors, gerotor motors.
Sun gear: Driven by the motor.
Planet gears: Rotate around the sun gear, mounted on a carrier.
Ring gear: Stationary or rotating, depending on design.
Provides high torque output while maintaining compact size.
Large-diameter ball or roller bearing that supports the excavator’s rotation.
Can be internal gear type (common in modern excavators) or external gear type.
Hydraulic disc brake (common in modern excavators).
Mechanical brake (used in older models).
Prevents free rotation when the machine is idle.
Cast iron or steel housing for durability.
Oil seals and gaskets prevent leakage and contamination.
FAQ
Company Details
Year Established:
2013
Total Annual:
9000000-12000000
Employee Number:
30~100
Ecer Certification：
Verified Supplier
GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED founded in September 2013, loed in the engineering machinery market in Guangzhou, China. At present , we have one shop, one warehouse and one office as well as a professional team for purchasing, selling, packing, shipping and after-sale service.... GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED founded in September 2013, loed in the engineering machinery market in Guangzhou, China. At present , we have one shop, one warehouse and one office as well as a professional team for purchasing, selling, packing, shipping and after-sale service....
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