Gear oil pump QXV Series QXV32-012R

ℹ️ Product Description

🔧  Hengmeisi Gear oil pump QXV Series QXV32-012R – perfect replacement for Bucher's original QXV series. Precision internal gear pump for low-viscosity media (0.8–10 mm²/s). Cast iron housing, 12.6 cc/rev, 50 bar, clockwise rotation. Advanced tooth-profile & hydrodynamic lubrication for stable performance with kerosene, diesel, brake fluids, HFA. Compact, efficient, reliable for industrial/mobile use.

✨ Core Advantages

⚡ Superior Efficiency for Thin Fluids

The QXV32-012R excels with low-viscosity fluids, achieving up to 98% volumetric efficiency even at viscosities as low as 0.8 mm²/s. Precision-machined gear pairs minimize internal leakage, while optimized flow paths reduce turbulence—outperforming standard gear pumps in fuel and brake fluid systems.

🛡️ Durable Compact Design

Weighing only ~9.5 kg, the QXV32-012R packs high pressure into a small footprint. Its cast iron housing with reinforced mounting lugs resists vibration, while heat-treated alloy steel gears ensure long wear life. Ideal for tight installations in mobile machinery and power units.

🔇 Ultra-Low Noise & Pulsation

Featuring a CAE-optimized tooth profile, the QXV32-012R operates at low noise levels (~73 dB at 1500 rpm) with minimal pressure pulsation. This smooth output protects sensitive components and improves system durability.

🌡️ Wide Temperature & Media Compatibility

The QXV32-012R handles temperatures from -20°C to +160°C and works with diverse media: diesel, kerosene, aviation fuels, brake fluids, and biodegradable oils. ATEX-certified (Ex II 3G T3/T4) for hazardous areas, adding operational flexibility.

🔤 Model Code Breakdown

☀ QXV: Series for low-viscosity internal gear pumps

☀ 3: Frame size 3

☀ 2: Pressure range 2 (50 bar continuous)

☀ 012: Displacement 12.6 cm³/rev

☀ R: Right-hand (clockwise) rotation

The QXV32-012R is a widely trusted model for light industrial, automotive, and aerospace applications, valued for its compactness, efficiency, and media versatility.

🧩 Product Structure

🚰 Precision Gear Mechanism

At the heart of the QXV32-012R are high-precision internal gears with optimized tooth profiles. The ring gear rides on a hydrodynamic lubrication film, enabling reliable operation at low viscosities and variable speeds.

🛠️ Reinforced Housing & Mounting

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

🧴 Advanced Sealing System

Multi-component oil-resistant 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 Assembly

High-performance roller bearings support the gear shaft, enabling continuous speeds up to 3600 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