مضخة هيدروليكية Caterpillar SBS80 391-9442 لـ حفارة متوسطة الحجم Caterpillar 312D2 GC 313D2 GC

Main Hydraulic Pump for CAT 312D2 GC 313D2 GC Excavator | Part No. 391-9442 387-2606
1. Product Core Overview
Optimized for GC Series Efficiency: Specifically engineered for the Caterpillar "GC" series, balancing fuel economy with high hydraulic power for general construction and utility applications.

13-Year Industry Authority: Supplied by a professional factory and specialist with 13 years of expertise in high-pressure hydraulic systems and comprehensive excavator spare parts.

Exact OEM Fitment: Fully compatible with Caterpillar part numbers 391-9442 and 387-2606, providing a 100% direct-fit replacement that maintains original machine performance and fuel efficiency.

2. Technical Specifications & Compatibility
Product Name: Main Hydraulic Pump Assembly / Axial Piston Pump

Caterpillar Part Numbers: 391-9442 / 387-2606 / 3919442 / 3872606

Machine Compatibility:

Caterpillar 312D2 GC

Caterpillar 313D2 GC

Core Build: Constructed with high-strength alloy cylinder blocks, precision-ground piston sets, and heat-treated swash plates for maximum wear resistance.

Quality Tier Options: Genuine Original, Premium OEM Grade, and High-Performance Aftermarket.

Testing Standard: 100% bench-tested for volumetric efficiency, pressure response time, and thermal stability.

3. Why Partner with a 13-Year Professional Service?
Technical Mastery: We understand the specific flow-control and load-sensing requirements of the CAT D2 GC series, ensuring our pumps prevent "engine lugging" and ensure smooth operation.

Comprehensive Parts Solution: Our expertise covers the entire machine—from pumps and travel motors to undercarriage and attachments—supporting all major brands (CAT, Volvo, Komatsu, Sany, etc.).

Flexible Quality Standards: We provide various quality tiers to match your specific budget and the remaining service life of your machinery.

Direct Factory Prices: Benefit from our optimized supply chain with highly competitive wholesale pricing directly from the source.

Global Trust: Trusted by heavy equipment repair shops, fleet managers, and distributors worldwide for consistent reliability.

4. Fast Global Delivery & Logistics
We prioritize speed to get your equipment back to work:

Express Delivery: Rapid door-to-door shipping via DHL, FedEx, UPS, and TNT (Typical arrival: 3-7 business days).

Air Freight: Efficient airport-to-airport delivery for urgent, high-priority hydraulic assemblies.

Sea Freight: Most economical shipping for bulk stock orders and large-scale inventory replenishment.

Secure Export Packaging: Every pump is secured in a reinforced, shock-proof wooden crate to guarantee it arrives in perfect factory condition.

5. Ordering & Professional Support
Fitment Verification: Please share your machine's serial number or a photo of the pump's nameplate to ensure 100% fitment accuracy.

Real-Time Quote: Contact us today for up-to-date pricing, tiered quality options, and current stock availability.

Installation Advice: Our technical team is available 24/7 to provide guidance on hydraulic system flushing and initial pump priming procedures.