Facing swing instability, hydraulic response delay, or reduced slewing efficiency in DX380, DX380LC, or DX400 excavator fleets? For construction contractors, mining companies, equipment distributors, and maintenance specialists, a dependable upper swing motor is essential to maintain machine productivity and reduce unexpected downtime. RITO Upper Swing Motor 170303-00071A 17030300071A DX380 DX380LC DX400 Excavator Hydraulic Swing Drive Unit delivers stable torque output, efficient hydraulic power conversion, and reliable swing drive performance for smooth and dependable excavator rotation operation in demanding heavy-duty construction and mining environments. The 170303-00071A swing motor is commonly associated with Doosan DX380 excavator swing drive applications.
Item NO.:
170303-00071AOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time:
2-3 DAYSCompared with standard aftermarket swing motor gearbox units, it provides consistent power transmission, stable rotary control, and reliable performance during continuous heavy-load excavation cycles. Designed for OEM/OEM-equivalent replacement supply, it supports professional repair, maintenance, and bulk procurement requirements for DX380, DX380LC, and DX400 excavator applications across mining, quarrying, infrastructure, and large-scale earthmoving projects.

| Part Number | 170303-00071A / 17030300071A |
|---|---|
| Part Name | Upper Swing Motor Excavator Hydraulic Swing Drive Unit |
| Compatible Brand | DOOSAN |
| Applicable Models | DX380, DX380LC, DX400 Heavy-Duty Quarry & Large Earthmoving Excavator |
| Application | Excavator upper body slewing hydraulic drive system, applied to large quarry mining, heavy earthmoving, highway construction and bulk material loading projects |
| Material | High-strength forged alloy steel + heavy-load wear-resistant bronze friction accessories |
| Product Color | Matte anti-rust industrial metallic gray |
| Working Temperature | -22℃ ~ +58℃ |
| Key Function | Convert high hydraulic pressure into stable heavy slewing torque to drive DX380 / DX380LC / DX400 excavator upper body rotation for heavy engineering and quarry projects |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

Provides powerful and stable rotary force for DX380, DX380LC, and DX400 excavator upper structure rotation and swing operations.

Converts hydraulic pressure into controlled rotary movement for smooth and precise swing operation.

Delivers stable speed reduction and increased torque output for improved swing control under heavy-duty working conditions.

Matches 170303-00071A specifications for DX380 series excavator hydraulic swing drive systems.

FAQ
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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