Excavator Hydraulic Spare Parts 31N8‑10020 K3V140DT Hydraulic Main Pump, Hydraulic Piston Pump for Hyundai R290LC‑7 R290LC‑3 EC290 EC290B Excavator

Keywords: 31N8‑10020, K3V140DT hydraulic main pump, Hyundai R290LC‑7 hydraulic pump, EC290B main pump, excavator hydraulic piston pump, construction machinery hydraulic replacement spare parts

🔹Product Overview

This hydraulic main pump, part number 31N8‑10020, model K3V140DT, is the core power‑output hydraulic component for Hyundai and medium‑large excavators. It provides high‑pressure hydraulic oil to drive boom, arm, bucket and travelling movements of the whole machine. Our aftermarket hydraulic main pump is manufactured strictly following OEM specifications, equipped with precisely‑processed pistons, cylinder block, swash plate and valve assemblies. Every finished pump has passed rigorous bench tests including pressure‑resistance inspection, leakage‑detection and performance calibration. It is an ideal replacement spare‑part for hydraulic system overhaul, effectively solving common failures such as weak digging force, slow operation response, abnormal noise and hydraulic oil leakage.

🔹Detailed Specifications

🔹Key Features & Advantages

✅ Exact OEM Installation Dimension Perfect flange, spline shaft and oil‑port position, direct drop‑in fit without modification.

✅ High‑Precision Internal Components Finely‑ground pistons and cylinder block, low friction loss, stable pressure and flow output.

✅ Heavy‑Duty Load‑bearing Performance Designed for long‑time heavy‑load construction‑site operation, reliable high digging power.

✅ Low‑Noise & Low‑Vibration Optimized internal flow‑distribution structure, greatly reduces abnormal pump noise and vibration during operation.

✅ Premium Sealing Performance High‑quality sealing kits installed, effectively prevent internal and external hydraulic oil leakage.

✅ 100% Pre‑Shipment Bench‑Test Each hydraulic pump is fully tested for working pressure, flow rate and sealing performance before shipment.

🔹Application Scope

Compatible with Hyundai excavator R290LC‑7, R290LC‑3 and excavator EC290, EC290B. Widely used in earth‑moving, quarrying, mining and large‑scale construction‑site working conditions.

🔹Our Company Advantage

We are a professional supplier of full‑series excavator hydraulic spare parts. We supply a complete range of hydraulic components, including main pumps, swing motors, travel motors, distribution control valves and hydraulic cylinders for Hyundai, CAT, Komatsu and other mainstream excavator brands. Rich stock for medium‑large excavator hydraulic spare‑parts Competitive factory‑direct price Sturdy wooden‑case packaging for heavy hydraulic parts to avoid transit damage Support mixed‑container order for one‑stop spare‑parts purchasing Provide professional technical matching service for your part‑number inquiry

🔹Packaging & Shipping

Heavy‑duty shock‑proof wooden case for hydraulic main pump, well‑protect drive shaft and oil ports against impact damage in transit Outer package reinforced with steel straps for long‑distance sea transportation Support sea freight, air freight and heavy‑cargo international logistics Complete export documents are available (Commercial Invoice, Packing List)

🔹Contact Us

If you need more hydraulic pumps or spare parts for Hyundai & excavators , please send your parts list to us. We will provide you our best quotation promptly.