Concentric Nine-Tooth Left-Hand Helical Gear Pump

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Product details

Core Structural Analysis

1. Nine-Tooth Design

The number of gear teeth directly impacts the pump's displacement and flow characteristics. A nine-tooth configuration reduces gear meshing frequency compared to designs with more teeth, thereby lowering noise and vibration while maintaining sufficient tooth contact area for stable transmission.

2. Left-Hand Helical Gears

• Helical Angle Advantages: Helical gears (vs. spur gears) offer smoother meshing, higher contact ratio, and greater load-bearing capacity. The left-hand design may serve specific transmission direction requirements or pair with right-hand gears for reverse-direction drives.

• Axial Force Balancing: Helical gears generate axial thrust forces, necessitating bearing design or hydraulic balancing measures to prevent axial displacement and ensure seal integrity.

3. Concentric Construction

Likely refers to a coaxial installation of gears and pump shafts, minimizing radial runout during rotation. This enhances volumetric efficiency and service life, common in high-precision hydraulic pumps where eccentricity-induced wear and leakage must be mitigated.

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Technical Characteristics (Inferred)

1. Low Noise & Smooth Operation

The nine-tooth left-hand helical structure reduces meshing impact and optimizes contact ratio, significantly lowering operational noise—ideal for noise-sensitive applications (e.g., indoor equipment, precision machinery).

2. High Volumetric Efficiency

Concentric design and tight helical gear meshing minimize internal leakage, maintaining stable output even under high-pressure conditions.

3. Direction-Specific Transmission

Left-hand orientation may enable reverse-direction drives or pair with right-hand gears for bidirectional power transmission in complex systems.

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Typical Applications

1. Hydraulic Systems

As a hydraulic pump, it provides stable power for construction machinery and industrial equipment, particularly in scenarios demanding low noise and high efficiency.

2. Lubrication Systems

Used in precision machinery for lubricant circulation, its quiet operation avoids disrupting equipment accuracy.

3. Specialized Transmission Devices

In mechanisms requiring reverse rotation or specific rotational directions (e.g., textile machinery, printing presses), left-hand gear pumps enable customized power delivery.

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Potential Technical Challenges

1. Axial Force Management

Helical gears' axial thrust requires robust bearing or hydraulic balancing solutions to prevent seal failure or shortened bearing life.

2. Manufacturing Precision Requirements

Concentric and helical gear machining demands high-precision equipment and processes, potentially increasing costs versus standard gear pumps.

3. Rotational Speed Limitations

Helical gear meshing characteristics may impose maximum speed constraints, necessitating design-specific operational parameter validation.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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