Gear Pump 31NB‑30020 for HYUNDAI R450‑7 Main Pump, Excavator Hydraulic Replacement Spare Part

Keywords: 31NB‑30020, Hydraulic Gear Pump, 31NB‑30020 pilot pump, HYUNDAI R450‑7 gear pump, R450‑7 excavator spare parts, excavator main pump accessory, construction machinery hydraulic parts, Hyundai excavator replacement parts

🔹Product Overview

This hydraulic gear pump Part No.31NB‑30020 is an essential hydraulic component specially designed for Hyundai R450‑7 excavator main pump assembly. It supplies stable pilot oil pressure for the whole hydraulic control system, ensures sensitive and smooth operation of excavator travel, boom, arm and bucket movements. Our aftermarket gear pump is manufactured strictly in accordance with OEM specifications, featuring high‑pressure resistance, low‑noise performance and stable oil output. It is a reliable replacement spare part for hydraulic system overhaul and maintenance of Hyundai heavy‑duty excavator.

🔹Detailed Specifications

🔹Key Features & Advantages

✅ Exact OEM Dimension Strictly produced following original drawing data, perfect installation size, fits directly to the main pump without modification.

✅ Stable Hydraulic Oil Output Precision‑machined gear pair, steady flow rate and constant pilot pressure, effectively avoid weak or delayed machine action.

✅ Excellent High‑Pressure & Wear‑Resistant Performance High‑strength cast iron and alloy gear material, withstand long‑time high‑pressure hydraulic impact, long service life for harsh construction sites.

✅ Good Sealing & Anti‑Leakage Property High‑quality sealing components, effectively prevent internal and external hydraulic oil leakage, reduce hydraulic‑system failure rate.

✅ Direct Plug‑in Replacement Fully interchangeable with original spare parts, convenient installation during excavator hydraulic repair.

✅ 100% Individual Testing Before Shipment Every gear pump passes strict pressure, sealing and performance inspection before delivery to guarantee stable working performance.

🔹Application Scope

Specially suitable for HYUNDAI R450‑7 large‑size excavator, also compatible with other relevant heavy construction machinery equipped with matched hydraulic main pump system. Commonly used for excavator hydraulic system repair, overhaul and parts replacement project.

🔹Our Company Advantage

We are a professional supplier for full‑series excavator spare parts and construction machinery hydraulic components. We can supply hydraulic main pumps, gear pumps, swing motors, travel motors, control valves, cylinders, engine overhaul kits and other wearing spare parts for Hyundai, Komatsu, Cater-pillar and other famous‑brand excavators. ‑ Rich stock for Hyundai R series excavator spare parts ‑ Competitive factory direct price ‑ Fast shipment for in‑stock goods ‑ Accept mixed container order for one‑stop spare parts purchasing ‑ Provide professional technical matching service for your part number inquiry

🔹Packaging & Shipping

Independent shock‑proof inner box for precision hydraulic gear pump Outer carton with shock‑proof protection for long‑distance sea transportation Support sea freight, air freight, express delivery for small trial order Full export document can be offered (Commercial Invoice, Packing List)

🔹Contact Us

If you need more hydraulic spare parts for HYUNDAI R450‑7 or other excavator models, please send your part list to us. We will offer you our best quotation immediately.