NOP Trochoid Pump TOP-N34OH: Detailed Overview
TheNOP TOP-N34OHis atrochoid gear pump(also known as a gerotor pump), designed for low-noise, high-efficiency fluid transfer in hydraulic and lubrication systems. Below is a structured breakdown of its key features, technical specifications, applications, and advantages:
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1. Key Features
• Trochoid Gear Design:
• Uses an inner gerotor (inner rotor) and outer gerotor (outer ring) to create smooth, pulsation-free flow.
• Lower noise levels compared to traditional gear pumps (critical for indoor/quiet environments).
• Compact & Lightweight:
• Aluminum housing reduces weight while maintaining durability.
• High Efficiency:
• Minimal internal leakage due to precise gear tooth profiling.
• Bi-Directional Flow:
• Can rotate clockwise or counterclockwise without modification.
• Self-Priming Capability:
• Operates efficiently even with low suction pressure.
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2. Technical Specifications
(Based on NOP’s standard TOP-series data; confirm with manufacturer for exact specs)
【表格】
Parameter Details
Model TOP-N34OH
Displacement 34 cc/rev (fixed displacement)
Max. Pressure 25 bar (363 psi) continuous
Peak Pressure 30 bar (435 psi) short-term
Max. Speed 3,000 RPM (varies by viscosity)
Port Size SAE 10 (metric equivalent)
Shaft Type Splined or keyed (options vary)
Mounting Flange-mounted (horizontal/vertical)
Viscosity Range 5–400 cSt (ideal: 20–100 cSt)
Temperature Range -10°C to +80°C (14°F to 176°F)
Note: The"N34"in the model number typically refers to the displacement (34 cc/rev), while"OH"may indicate a specific shaft or port configuration (check with NOP for exact details).
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3. Applications
TheNOP TOP-N34OHis commonly used in:
• Lubrication Systems:
• Industrial machinery (e.g., CNC machines, printing presses, conveyors).
• Hydraulic Power Units (HPUs):
• Small-scale hydraulic systems (e.g., agricultural tools, lift tables).
• Cooling & Transfer Systems:
• Oil circulation in engines, transmissions, and gearboxes.
• Automated Manufacturing:
• Precision fluid control in robotic arms and assembly lines.
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4. Advantages Over Other Pump Types
• Quiet Operation:
• Trochoid design reduces noise by 10–15 dB compared to standard gear pumps.
• Low Pulsation:
• Smooth flow output minimizes pressure fluctuations (critical for sensitive systems).
• Compact Design:
• Smaller footprint than vane or piston pumps for space-constrained applications.
• Cost-Effective:
• Lower initial cost vs. variable-displacement pumps (ideal for fixed-flow demands).
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5. Comparison with NOP’s TOP-Series Variants
【表格】
Model Variant Key Difference Best For
TOP-N34OH Standard trochoid pump (34 cc/rev) General lubrication/hydraulics
TOP-N50OH Larger displacement (50 cc/rev) Higher-flow applications
TOP-N20OH Smaller displacement (20 cc/rev) Compact systems
TOP-N34OH-D Dual-port version (for parallel/series flow) Customized systems
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6. Maintenance & Reliability
• Service Intervals:
• Recommended oil changes every 1,000–2,000 hours (depending on operating conditions).
• Common Failure Points:
• Wear of gerotor teeth (due to abrasive contaminants).
• Seal leakage (requires regular inspection).
• Pro Tips:
• Use ISO 32 or 46 hydraulic oil for optimal performance.
• Install a 10–25 µm inline filter to prevent premature wear.
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7. Cost Analysis
• Initial Purchase:
• Moderate cost (lower than piston pumps, higher than simple gear pumps).
• Long-Term Savings:
• Lower noise and reduced pulsation extend system life (reduces maintenance).
• Replacement Parts:
• Gerotor set and seals are modular and replaceable (reduces downtime).
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8. Manufacturer Support
• NOP Corporationoffers:
• Global technical support.
• Customization options (e.g., stainless steel housing for food-grade applications).
• Training programs for fluid system designers.
