Gear Pump
Category: Pump
Overview
External gear pumps transfer fluid by meshing two identical gears that rotate in opposite directions inside a close-tolerance housing. Fluid is carried in the spaces between gear teeth around the outer circumference and discharged as the teeth mesh. The positive-displacement design delivers a near-constant flow rate independent of back pressure, making gear pumps the preferred choice for metering, blending, and high-viscosity transfer duties. Flow rate is directly proportional to shaft speed, enabling precise control via variable-speed drives.
Technical Specifications
| Type | External gear (positive displacement) |
| Gear/Body Material | Cast iron / SUS304 / SUS316 |
| Seal Type | Mechanical seal / packing gland / mag-drive |
| Max Viscosity | Up to 100,000 cP |
| Max Flow Rate | Up to 200 m³/h |
| Max Pressure | 16 bar |
| Temperature Range | -20°C to +300°C |
| Port Size | DN10 – DN200 |
| Drive Type | Direct / gearbox / inverter-controlled |
| Standard | ISO 2533 / API 676 |
Applications
- Hydraulic oil and lubricant circulation
- resin, adhesive, and polymer transfer
- bitumen and asphalt pumping
- fuel oil and diesel transfer
- chemical dosing and metering
- paint and ink circulation systems
Key Features
- Positive-displacement for accurate metering
- handles viscosities up to 100,000 cP
- near-pulseless flow
- flow rate directly proportional to speed
- reversible rotation for bidirectional flow
- available in SS for food and pharmaceutical duty
For technical inquiries & custom orders: supakorn@stico.co.th | Tel: 02-035-9589
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