Tuthill
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Catalog động · cập nhật theo kho
9 model Gear Pump
Filter & sort
Định nghĩa · Spec · Cách chọn cấu hình
Select correctly Gear Pump
Từ định nghĩa, dải thông số đến 3 bước chọn model — tất cả trong một mạch.
Gear pumps use meshing gears to transfer fluid through the spaces between the gear teeth and the pump casing, creating steady, low-pulsation flow. The pump is self-priming and delivers flow proportional to rotational speed, making it convenient for metering.
Two types: external gear (two external meshing gears, high pressure, low-to-medium flow, for hydraulic and oil) and internal gear (very smooth flow, suitable for high-viscosity fluids such as bitumen, adhesives, and syrup). Materials include cast iron, steel, and stainless steel depending on the fluid.
1
Identify fluid & viscosity
Oil/hydraulic, high pressure → external gear; very viscous fluids (bitumen, adhesive, syrup) → internal gear for smooth flow. Viscosity and temperature determine the configuration.
2
Calculate flow rate & pressure
Flow rate (m³/h) is proportional to rotational speed; pressure depends on system resistance. Viscous fluids require reduced speed to prevent starved suction.
3
Select material & brand
Cast iron/steel for oil; stainless steel for chemicals and food. Jacketed heating for solidifying fluids (bitumen). Select EU/G7 brands with CO/CQ certificates; TKT engineers provide consultation.
External Gear or Internal Gear?
Two gear pump types address different requirements for pressure and viscosity.
| Criteria | External Gear | Internal Gear |
|---|---|---|
| Pressure | High (hydraulic) | Medium |
| High-viscosity fluid | Moderate | Suitable |
| Flow smoothness | Smooth | Very smooth |
| Construction | Simple | More complex |
| Flow rate | Low–medium | Medium–high |
| Application | Oil, hydraulic | Bitumen, adhesive, syrup |
Distributed brands
Thương hiệu bơm bánh răng tại TKT
Tuthill
Tuthill
Tuthill (Mỹ) — bơm bánh răng ăn khớp trong/ngoài cho dầu nhớt, hoá chất và môi chất có độ nhớt cao. TKT phân phối chính hãng, hỗ trợ kỹ thuật và phụ tùng tại Việt Nam.
Xem thương hiệu Tuthill → Ứng dụng & danh mục
Where it's used — and which line to choose?
Các ngành thường dùng dòng bơm này. Nếu nhu cầu khác, chuyển nhanh sang các dòng còn lại.
6 typical application industries
Lubricating Oil & Hydraulic
Pumping lubricating oil, hydraulic oil, thermal oil — stable pressure.
Viscous Chemicals
Pumping viscous chemicals, adhesives, liquid resins — smooth flow, low pulsation.
Asphalt & Bitumen
Pumping bitumen and hot asphalt — jacketed heating, internal gear type.
Viscous Food Products
Pumping syrup, molasses, chocolate — stainless steel, smooth flow with minimal shear.
Lubrication & Heat Transfer
Supplying lubricating oil and thermal oil to machinery and furnaces.
Flow Metering by Speed
Dosing and blending viscous fluids proportional to rotational speed.
Q&A · Quote
Questions frequently asked
A gear pump is a positive displacement pump that uses meshing gears to transfer fluid through the spaces between the gear teeth and the casing, producing steady, low-pulsation flow. It is self-priming and delivers flow proportional to rotational speed, making it easy to meter.
External gear pumps (two meshing external gears) provide high pressure and low-to-medium flow, typically used for hydraulic and oil applications. Internal gear pumps produce very smooth flow and are suitable for highly viscous fluids such as bitumen, adhesives, and syrup.
Oil applications (lubricating oil, hydraulic oil, thermal oil) typically use external gear pumps — simple construction, high pressure, steady flow, and self-priming. For very viscous oils or when extremely smooth flow is required, internal gear pumps are preferred. Cast iron or steel materials suit standard oils; stainless steel for corrosive media.
Yes, handling high-viscosity fluids is a key advantage of gear pumps — particularly internal gear types. For very viscous fluids, reduce rotational speed to avoid starved-suction conditions.
Typical ranges: flow rate up to ~100 m³/h and pressure up to ~25 bar for transfer duties; hydraulic external gear versions achieve higher pressures. Exact figures depend on the model — contact TKT engineers for sizing.
Yes, with stainless steel sanitary construction — suitable for pumping syrup, molasses, chocolate, and other shear-sensitive viscous fluids thanks to smooth flow. Select appropriate materials and hygienic design.
Use an internal gear pump with a jacketed casing (steam or oil heating) to maintain bitumen at working temperature and prevent solidification. Select heat-resistant materials and seals appropriate for the fluid.
TKT distributes genuine gear pumps imported from EU/G7 brands, with certificates of origin (CO/CQ) and spare parts. Submit your fluid specifications for brand and material recommendations.