Gear oil pump QXV Series QXV42-020R246

ℹ️ Product Description

Hengmeisi Gear oil pump QXV Series QXV42-020R246 – perfect replacement for Bucher QXV. 20.3cc/rev, 50 bar, low-viscosity media (0.8–10 mm²/s), cast iron, clockwise. Hydrodynamic lubrication, optimized teeth – runs on kerosene, diesel, brake fluids.

✨ Core Advantages

⚙️ High Efficiency for Thin Fluids

The QXV42-020R246 excels with low-viscosity fluids, achieving up to 98% volumetric efficiency even at 0.8 mm²/s. Precision-machined gears minimize leakage, while optimized flow paths reduce turbulence—ideal for fuel and brake fluid systems.

🛡️ Rugged & Compact Build

Constructed with a reinforced cast iron housing and heat-treated alloy steel gears, the QXV42-020R246 withstands vibration and heavy loads. Its compact footprint (frame size 4) fits tight spaces in mobile machinery and power units.

🔇 Low Noise & Pulsation

Featuring a CAE-optimized tooth profile, the QXV42-020R246 operates at ~74 dB (1500 rpm) with minimal pressure pulsation. This smooth output protects sensitive components and extends system life.

🌡️ Wide Compatibility & Safety

Handles temperatures from -20°C to +160°C and works with diesel, kerosene, aviation fuels, and biodegradable oils. ATEX-certified (Ex II 3G T3/T4) for hazardous areas, ensuring operational safety.

🔤 Model Code Breakdown

☀ QXV: Series for low-viscosity internal gear pumps

☀ 4: Frame size 4

☀ 2: Pressure range 2 (50 bar continuous)

☀ 020: Displacement 20.3 cm³/rev

☀ R: Right-hand (clockwise) rotation

☀ 246: Custom configuration (port size, seal material, mounting variant)

The QXV42-020R246 is a top choice for light industrial, automotive, and aerospace applications, valued for its durability, efficiency, and media versatility.

🧩 Product Structure

🚰 Precision Gear Assembly

At the heart of the QXV42-020R246 are high-precision internal gears with optimized tooth profiles. The ring gear rides on a hydrodynamic lubrication film, enabling reliable low-viscosity operation.

🛠️ Reinforced Housing & Mounting

The robust cast iron body integrates reinforced mounting lugs and a standard flange, ensuring secure installation under vibration. Its compact design allows flexible orientation.

🧴 Advanced Sealing System

Multi-component FKM/NBR seals prevent leakage at the shaft and housing joints. Rated for -20°C to +160°C, they maintain integrity with low-viscosity and aggressive fluids.

⚙️ Heavy-Duty Bearing Unit

High-performance roller bearings support the gear shaft, enabling continuous speeds up to 3200 rpm. They reduce friction and extend service life under high-pressure loads.

🚀 Application Scenarios

✈️ Aerospace & Aviation

★ Jet fuel transfer and auxiliary power units

☝ Hydraulic systems for light aircraft and ground support equipment

🚗 Automotive & Transportation

☝ Brake fluid and power steering systems

☝ Diesel fuel delivery for commercial vehicles

★ Hydraulic actuators for mobile equipment

🏭 Industrial & Process

※ Low-viscosity fluid transfer (kerosene, paraffin)

※ Hydraulic power units for ATEX-certified hazardous areas

※ Lubrication systems for high-speed machinery

🛠️ Specialized Hydraulics

☑ Fire-resistant fluid (HFA) systems

☑ Variable-speed drive applications

☑ Compact hydraulic power packs for tools

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