The KCB series full stainless steel gear pump is mainly used for transferring lubricating oil in lubrication systems of mechanical equipment. It is suitable for lubricating oils with viscosity from 5 to 1500 cSt and temperature below 300°C.
This stainless steel gear pump can also transfer non-lubricating oils, beverages, and low-corrosive liquids according to material compatibility and operating requirements. When equipped with copper gears, it may be used for low-flash-point liquids such as gasoline and benzene under suitable operating conditions.
The pump is available in 304, 316, and 316L stainless steel materials. It can be used as a transfer pump or booster pump in oil transfer systems, as a delivery, pressurizing, or injection fuel pump in fuel oil systems, and as a lubricating oil pump in various industrial applications.
The KCB series full stainless steel gear pump is also suitable for large-flow oil transfer and unloading applications in oilfields, oil depots, ports, docks, ships, and related oil handling systems.
Features & Advantages
- Full Stainless Steel Construction: Available in 304, 316, and 316L stainless steel for different operating requirements.
- Designed for Oil Transfer: Suitable for lubricating oil, fuel oil, and similar oil-based media.
- Large-Flow Capability: Flow range is 1.1–600 m³/h according to the source material.
- Heat-Treated Gears: Gears are heat-treated for higher hardness and strength.
- Replaceable Shaft Sleeves: Gears and shafts operate inside replaceable shaft sleeves for convenient maintenance.
- Automatic Internal Lubrication: Internal pump parts are lubricated by the conveyed medium during operation.
- Reduced Bearing Load: Oil drain and return grooves help reduce gear torque load, bearing load, and wear.
- Return Valve Protection: Built-in return valve provides overload protection within the allowable discharge pressure range.
Structure
The KCB series full stainless steel gear pump mainly consists of gears, shafts, pump body, return valve, and shaft-end seal. The gears and shafts are installed together in replaceable shaft sleeves. During operation, all internal parts are automatically lubricated by the conveyed medium.
The pump is equipped with a return valve for overload protection. The full return pressure of the return valve is 1.5 times the rated discharge pressure of the pump. It can also be adjusted within the allowable discharge pressure range according to actual requirements. However, the return valve should not be used as a long-term pressure reducing valve. If pressure reduction is required, a separate pressure reducing valve should be installed in the pipeline.
Viewed from the shaft extension end, the pump rotates clockwise.
Typical Applications
The KCB series full stainless steel gear pump is commonly used in:
- Mechanical equipment lubrication systems
- Oil transfer systems as a transfer or booster pump
- Fuel oil systems for delivery, pressurizing, and injection service
- Industrial lubricating oil systems
- Oilfield oil transfer
- Oil depot transfer and unloading
- Port and dock oil handling
- Shipboard oil transfer
- Large-flow oil unloading systems
- Crude oil, fuel oil, and lubricating oil transfer applications
Suitable Media
The pump is suitable for:
- Lubricating oil
- Fuel oil
- Crude oil
- Similar oil-based liquids
- Non-lubricating oils under suitable conditions
- Beverages under suitable material compatibility
- Low-corrosive liquids
When equipped with copper gears, the pump may be used for low-flash-point liquids such as gasoline and benzene under suitable operating conditions.
Operating Range
- Flow Range: 1.1–600 m³/h
- Pressure Range: 0.28–2.5 MPa
- Viscosity Range: 5–1500 cSt
- Medium Temperature: Below 300°C
- Material Options: 304, 316, 316L stainless steel
- Rotation Direction: Clockwise when viewed from the shaft extension end
Technical Parameters
| Model | Equivalent Model | Flow Rate m³/h | Flow Rate L/min | Speed r/min | Discharge Pressure MPa | NPSH m | Efficiency % | Motor Power kW | Motor Model |
|---|---|---|---|---|---|---|---|---|---|
| KCB-18.3 | 2CY-1.1/1.45 | 1.1 | 18.3 | 1400 | 1.45 | 5 | 44 | 1.5 | Y90L-4 |
| KCB-33.3 | 2CY-2/1.45 | 2 | 33.3 | 1420 | 1.45 | 5 | 44 | 2.2 | Y100L1-4 |
| KCB-55 | 2CY-3.3/0.33 | 3.3 | 55 | 1400 | 0.33 | 7 | 41 | 1.5 | Y90L-4 |
| KCB-83.3 | 2CY-5/0.33 | 5 | 83.3 | 1420 | 0.33 | 7 | 43 | 2.2 | Y100L1-4 |
| KCB-135 | 2CY-8/0.33 | 8 | 135 | 940 | 0.33 | 5 | 46 | 2.2 | Y112M-6 |
| KCB-200 | 2CY-12/0.33 | 12 | 200 | 1440 | 0.33 | 5 | 46 | 4 | Y112M-4 |
| KCB-300 | 2CY-18/0.36 | 18 | 300 | 960 | 0.36 | 5 | 42 | 5.5 | Y132M2-6 |
| KCB-483.3 | 2CY-29/0.36 | 29 | 483.3 | 1440 | 0.36 | 5.5 | 42 | 11 | Y160M-4 |
| KCB-633 | 2CY-38/0.28 | 38 | 633 | 970 | 0.28 | 6 | 43 | 11 | Y160L-6 |
| KCB-960 | 2CY-58/0.28 | 58 | 960 | 1470 | 0.28 | 6.5 | 43 | 18.5 | Y180M-4 |
| KCB-1200 | — | 72 | 1200 | 740 | 0.6 | 7 | 43 | 37 | Y280S-8 |