For DX800, DX800LC, and DX850 excavators operating in mining, quarrying, and large-scale heavy construction environments, a powerful and reliable swing reduction gearbox is essential for maintaining smooth upper structure rotation, high torque output, and long-term machine productivity. Large excavators require a robust planetary reduction system capable of handling extreme loads, frequent slewing cycles, and challenging jobsite conditions. RITO Hydraulic Swing Reduction Gearbox 130426-00042A DX800 DX800LC DX850 Excavator Rotary Drive Planetary Reducer Unit provides stable torque transmission, efficient hydraulic power reduction, and dependable rotary performance for heavy-duty excavator swing applications.
Item NO.:
130426-00042AOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK, PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockDesigned for professional excavator maintenance and replacement supply, this hydraulic rotary drive reducer assembly delivers consistent power transfer and reliable compatibility for large excavator fleets. It is an OEM-equivalent replacement solution for equipment distributors, repair workshops, and mining operators who require durable swing components to reduce downtime, restore slewing efficiency, and maintain stable operation during continuous heavy-load working cycles. The planetary reduction structure helps achieve smooth speed control and high torque conversion for large excavator swing systems.
| Part Number | 130426‑00042A / 130426‑00042A |
|---|---|
| Part Name | DX800 DX800LC DX850 Excavator Hydraulic Swing Reduction Gearbox Rotary Drive Planetary Reducer Unit |
| Compatible Brand | DOOSAN |
| Applicable Models | DX800, DX800LC, DX850 Super‑Heavy‑Duty Construction Excavator |
| Application | Hydraulic drive system for excavator upper body slewing; widely applied in large quarry excavation, mine operation and bulk material stacking work |
| Material | High‑strength forged alloy steel + super‑heavy‑load wear‑resistant bronze friction parts |
| Product Color | Matte anti‑rust industrial metallic gray |
| Working Temperature | -22℃ ~ +58℃ |
| Key Function | Convert hydraulic pressure into stable slewing torque to drive upper carriage rotation for large‑scale mining and earthmoving projects |
| Condition | 100% New, Aftermarket / OEM Equivalent Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |
Provides powerful rotary force and stable speed reduction for DX800 and DX850 excavator upper structure rotation.
Converts hydraulic motor power through the reducer system to achieve smooth and controlled slewing movement.
Built with high-strength internal gear components to withstand vibration, impact loads, and long operating cycles in demanding environments.
Matches 130426-00042A specifications for DX800, DX800LC, and DX850 excavator hydraulic swing drive systems.
FAQ
Q: What factors can cause DX800 swing gearbox performance problems?
A: Heavy-load operation, insufficient lubrication, hydraulic contamination, gear wear, and prolonged working hours can affect swing gearbox reliability.
Q: How does the 130426-00042A planetary reducer improve DX850 excavator operation?
A: It reduces hydraulic motor speed while increasing torque output, allowing large excavators to achieve smoother and more powerful swing movement.
Q: What information is needed to confirm a DX800 swing gearbox order?
A: Customers should provide the excavator model, original part number, gearbox specifications, installation details, and operating environment.
Q: Why are complete planetary swing reducer units preferred for excavator repairs?
A: Complete assemblies simplify replacement, reduce maintenance time, and help restore reliable machine operation with improved installation efficiency.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
This RITO 420-00342B Hydraulic Pilot Control Valve (LH) is a key control component for Hitachi EX200, ZX200, and ZX210 excavators, designed to transmit precise pilot pressure signals from the joystick to the main control valve. It ensures smooth operation, accurate response, and stable control of the arm, bucket, and travel functions in construction environments.
View More
This RITO 420-00343B Hydraulic Pilot Control Valve (RH) is a key control component for Hitachi EX200, ZX200, and ZX210 excavators, designed to transmit precise pilot pressure signals from the right-hand joystick to the main control valve. It ensures smooth operation, accurate response, and stable control of the arm, bucket, and travel functions in construction environments.
View More
The RITO Swing Reduction Sun Gear No.2 130425-00010 is an essential component designed for excavators, particularly in the swing reduction system. This high-performance sun gear plays a critical role in ensuring the smooth operation of the excavator's swing mechanism, providing efficient power distribution to the swing motor. Ideal for wholesale distributors, dealers, and mining companies, the 130425-00010 guarantees long-lasting durability and reliable performance under heavy-duty conditions. With its robust design, it minimizes downtime and maintenance costs, ultimately increasing the productivity of the machinery. Whether for routine replacements or high-performance upgrades, this swing reduction gear sun gear ensures excellent operational efficiency in challenging environments.
View More
The RITO Excavator Swing Carrier Assy 1st Sun Gear 100502-00039 is a crucial component designed for excavator swing systems, offering high efficiency and durability in heavy-duty operations. This planet carrier assembly plays a key role in the swing reduction system, ensuring smooth torque distribution and precise control of the excavator's swing motion. Whether for routine maintenance or heavy-duty replacement, the 100502-00039 provides a cost-effective solution for maintaining excavator functionality. Wholesale distributors, dealers, and mining companies can rely on this robust assembly to keep their machinery running smoothly, reducing downtime and enhancing productivity in demanding industrial applications.
View More
The RITO Swing Reduction 1st Planet Gear Assy 100502-00037 is an essential component for excavator swing reduction systems, designed to enhance the performance of the final drive system. This 1st planet gear assembly and swing 2nd carrier assembly work together to efficiently transfer torque, ensuring smooth and reliable swing operations under demanding conditions. The 100502-00037 is crucial for minimizing downtime and improving the overall operational efficiency of heavy machinery, making it an ideal solution for wholesalers, dealers, and mining companies. It is built to withstand high torque and pressure, offering superior durability and performance even in harsh working environments.
View More
Targeting wholesalers, agents and mining operators, this 2404-1065 14-tooth swing pinion gear is a critical drive part for Doosan Solar 340LCV excavators. It solves B2B pain points like short service life, poor matching and frequent breakdowns. Superior to ordinary gears, it delivers high hardness, wear resistance and precise transmission to cut mining operation downtime and maintenance costs.
View More
Mine/construction fleets face costly downtime from worn cylinder pins; generic parts fail fast, delaying projects and inflating costs for wholesalers/agents. Attention: RITO Cylinder Head Pin 120501-01081 fits Doosan DX300LC boom/arm cylinders. Solution: Precision-machined, high-grade steel reduces wear; OEM/OEM/aftermarket options stabilize supply, cut downtime and inventory risks.
View More
130422-00095A / 130425-00010 / 100502-00039 solve downtime nightmares: mining & contractor fleets see 40% longer swing drive life vs low-grade alloys. Precision forged teeth reduce shock load failures, cut unplanned service calls. Stock ready for urgent rebuilds.
View MoreLeave A Message
Scan to wechat :
