ranroswang@hksparkling.com 
+86 138 2341 8469
SPARKLING CAT 312D Swing Gearbox – Durable Excavator Part
The Caterpillar Swing Reducer (Part No. 333‑3073 / 3333073) is a premium swing gearbox designed to restore smooth and powerful 360° rotation in CAT excavators—compatible with 312D, 312DL, 312D2, 312E, 313D, 313D2, 314C, and 314E models.
It features hardened steel planetary gears, sealed bearings, and robust housing to handle heavy-duty rotational loads while preventing leaks and contamination . Available as genuine OEM or high-quality aftermarket units, this swing reducer ensures a direct-fit replacement and optimized machine performance.
The SPARKLING CAT 312D Swing Gearbox is a high-quality replacement part designed to fit perfectly with your Caterpillar 312D excavator. Manufactured by SPARKLING MACHINERY, a trusted name in excavator components since 2013, this swing gearbox delivers superior performance and durability to keep your machine running smoothly.
This swing gearbox is built with precision and stability in mind. It plays a crucial role in enabling smooth, controlled rotation of the excavator’s upper structure—ensuring efficient digging, lifting, and moving tasks. Thanks to advanced manufacturing processes and stringent quality control, the SPARKLING CAT 312D swing gearbox maintains reliable operation even in tough working conditions.
Choosing SPARKLING ensures you receive a product that combines longevity and cost-effectiveness. Its sturdy construction minimizes wear and tear, helping you avoid costly repairs and downtime. Plus, SPARKLING offers tailored solutions and expert technical support to meet your specific needs, reflecting our commitment to customer satisfaction.
Compatible not only with Caterpillar but also with other leading excavator brands like Komatsu, Hitachi, and Volvo, our swing gearboxes meet or exceed OEM standards. With SPARKLING MACHINERY, you benefit from competitive pricing without compromising quality.
In short, the SPARKLING CAT 312D Swing Gearbox is your reliable partner for maintaining excavator efficiency, extending service life, and optimizing operational costs. Trust SPARKLING to support your business with high-quality parts and continuous service.
Why Choose SPARKLING CAT 312D Swing Gearbox?
- Precise fit for Caterpillar 312D excavators
- Durable construction for long-term use
- Enhances machine stability and smooth motion
- Reduces maintenance frequency and costs
- Backed by expert support and customization options
- Compatible with major excavator brands
Invest in quality and reliability—choose SPARKLING for your excavator parts needs.
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Frequently Asked Questions
Can I get technical support for installing your parts?
Absolutely. We provide technical support and guidance for the installation and maintenance of our parts. Our team is available to assist you with any questions or concerns to ensure proper installation and optimal performance.
What is the lead time for receiving excavator parts?
Our typical lead time depends on the complexity and quantity of the order. For standard parts, delivery usually takes between 7 to 14 days. For custom orders, the lead time may vary, but we always strive to ensure timely delivery.
Do you offer customized parts?
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Yes, we offer tailored solutions to meet specific customer requirements. Whether you need custom dimensions or specialized features, we can design and produce parts that perfectly match your excavator’s needs.
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How do you ensure the quality of your parts?
We follow strict quality control procedures throughout the manufacturing process. Our parts are tested for durability, performance, and precision to ensure they meet industry standards and exceed customer expectations.
If you don’t find your answer, please E-mail us and we’ll be happy to help you out.
CATERPILLAR EXCAVATOR 312D L 312C 313D2 GC 313D2 333-3073 3333073 SWING REDUCER
The Caterpillar Swing Reducer (Part No. 333‑3073 / 3333073) is a premium swing gearbox designed to restore smooth and powerful 360° rotation in CAT excavators—compatible with 312D, 312DL, 312D2, 312E, 313D, 313D2, 314C, and 314E models.
It features hardened steel planetary gears, sealed bearings, and robust housing to handle heavy-duty rotational loads while preventing leaks and contamination . Available as genuine OEM or high-quality aftermarket units, this swing reducer ensures a direct-fit replacement and optimized machine performance.
BULLDOZERS CRAWLER LOADERS D61EX D61PX D65EX D65PX D65WX D85EX D85PX 708-1S-00240 7081S00240 HYDRAULIC PUMP ASSEMBLY 29KG
The 708-1S-00240 (7081S00240) Hydraulic Pump Assembly is a critical component designed for Komatsu bulldozers and crawler loaders, including models D61EX, D61PX, D65EX, D65PX, D65WX, D85EX, and D85PX. This heavy-duty hydraulic pump ensures stable pressure output and efficient power delivery across all working functions—such as blade control, steering, and lifting systems.
Manufactured to OEM-equivalent standards, this pump offers:
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High pressure endurance
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Long wear-resistant life cycle
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Excellent temperature and oil seal compatibility
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Perfect fitment and smooth installation
MADE IN CHINA SPARKLING MACHINERY NEW R320LC9 R330LC9A R330LC9S 31Q9-19140 SWING REDUCTION GEAR
SPARKLING MACHINERY NEW R320LC9 R330LC9A R330LC9S 31Q9-19140 Swing Reduction Gear is a premium China-made transmission component specifically engineered for R320LC9, R330LC9A, and R330LC9S excavators. As a critical part of the swing system, it converts high-speed, low-torque input into low-speed, high-torque output, enabling smooth and controlled rotation of the upper structure (boom, arm, and bucket) during precision positioning, material handling, and heavy-duty operations.
Designed to original equipment standards, it maintains stable power transmission and efficient torque conversion even under continuous rotational stress and heavy loads. With optimized gear meshing design for minimal friction and noise, it adapts seamlessly to harsh working environments, from construction sites to mining areas. Backed by strict quality verification, it guarantees consistent performance to support uninterrupted machinery operation.
DX140W DX160W DX140W-3 DX140W-5 DX170W DX190W-3 SOLAR 185W-V K9001490 ROD;TRACK(L.H) K9001494 ROD;TRACK(R.H)
Heavy-Duty Track Rod Assemblies for SOLAR & Daewoo Wheel Excavators
Precision-engineered for SOLAR 185W-V and Daewoo DX140W/DX140W-3/DX140W-5/DX160W/DX170W/DX190W-3 wheel excavators, these Track Rods (K9001490 Left Hand / K9001494 Right Hand) are critical undercarriage components that deliver uncompromising strength and alignment stability. Forged from high-tensile alloy steel and hardened to resist abrasion, each rod ensures precise track tension control, reduces sprocket wear, and extends undercarriage life in harsh terrains. Manufactured to OEM specifications with seamless compatibility, SPARKLING MACHINERY’s rods undergo rigorous load testing – guaranteeing your excavator maintains optimal traction and mobility, mile after demanding mile.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
foreverlucia1