KCB/2CY Gear Oil Pump for Lubricating and Fuel Oil Transfer

KCB/2CY Gear Oil Pump for Lubricating and Fuel Oil Transfer

KCB/2CY Gear Oil Pump | Positive-displacement oil transfer

  • Positive displacement: Stable flow for viscous oils.
  • Self-priming: Simplified suction setup.
  • Self-lubricated: Lubricated by the pumped liquid.
  • Packaged drive: Motor-coupled on common base.
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Product Overview

The KCB Gear Oil Pump is specifically designed for transporting lubricating oils with a medium temperature not exceeding 70°C. For high-temperature applications, the pump can be configured with high-temperature materials, typically capable of handling up to 200°C, with options for higher service temperatures. This pump is suitable for liquids with a kinematic viscosity ranging from 5×10⁻⁵ to 1.5×10⁻³ m²/s.
Not suitable for corrosive liquids, liquids containing hard particles or fibers, highly volatile liquids, or low flashpoint liquids (such as gasoline or benzene).

Model Designation

KCB2CY Gear Oil Pump type

Key Features

  • Temperature Capability: Suitable for liquids with temperatures up to 70°C; high-temperature configurations available for up to 200°C.

  • Viscosity Range: Suitable for liquids with kinematic viscosity from 5×10⁻⁵ to 1.5×10⁻³ m²/s.

  • Self-Lubricating: The pumped liquid provides self-lubrication, reducing the need for additional lubrication.

  • Flexible Coupling: Helps compensate for slight misalignment and dampens hydraulic shocks, improving operational stability.

Engineering Summary

The KCB Gear Oil Pump utilizes a dual gear design (with one driving gear), forming a sealed working chamber. As the gears expand on the suction side, a vacuum is created to draw in the liquid. The liquid fills the gear teeth and is transported to the discharge side. When the gears mesh, the liquid is expelled, creating discharge pressure and providing continuous flow. The pump’s compact design makes it easy to install and maintain.

Typical Applications

The KCB Gear Oil Pump is widely used in the following industries:

  • Chemical: For the transportation of chemicals.

  • Petroleum: Used for petroleum product transfer.

  • Metallurgy: Suitable for transporting high-temperature liquids.

  • Light Industry: Commonly used for lubricating oil transfer.

  • Synthetic Fibers, Environmental Protection, Food, and Pharmaceuticals: Ideal for liquids without hard particles or fibers.

System Configuration

The KCB Gear Oil Pump is configured with the following key components:

  • Pump Casing: Made from durable material for long-term stability.

  • Gear System: Dual gear design for efficient transfer.

  • Bearings and Safety Valve: Ensures reliable operation and protects the system.

  • Flexible Coupling: Ensures stable connection between the pump and motor.

Components & Supply

The KCB Gear Oil Pump consists of:

  • Pump Casing: Typically made of cast iron.

  • Gears: Manufactured from high-quality carbon steel.

  • Safety Valve: Provides overpressure protection.

  • Bearing Housing: Supports the bearings for stable operation.

  • Flexible Coupling: Compensates for misalignment and reduces hydraulic impact.

Technical Service

The KCB Gear Oil Pump provides comprehensive technical support, including:

  • Installation and commissioning services to ensure proper operation.

  • Regular maintenance checks to extend the lifespan of the pump.

  • Ongoing technical support to resolve any operational issues.

Operating Conditions

  • Applicable Media: Lubricating oils and other high-temperature fluids.

  • Operating Temperature: Typically ≤70°C, with high-temperature materials available for up to 200°C.

  • Viscosity Range: Suitable for fluids with kinematic viscosity from 5×10⁻⁵ to 1.5×10⁻³ m²/s.

  • Not Suitable Liquids: Not suitable for corrosive fluids, liquids containing hard particles/fibers, highly volatile liquids, or low flashpoint liquids (e.g., gasoline, benzene).

Service Conditions

  • The operating environment must meet the pump’s rated conditions to ensure efficient and stable operation.

  • Ensure the pump maintains excellent sealing performance in high-temperature conditions, with no leakage.

Protection Features

  • Built-in Safety Valve: The safety valve automatically opens in case of abnormal pressure, preventing damage to the pump and pipes.

  • Automatic Protection: The pump has internal protection to prevent overload and other operational issues.

Selection Standards

When selecting the KCB Gear Oil Pump, consider the following:

  • Fluid Temperature and Viscosity: Ensure the pump is suitable for the fluid’s temperature and viscosity range.

  • Operating Environment: Choose high-temperature materials if required for specific applications.

  • Flow Rate and Head: Select the appropriate flow rate and head for the specific application.

Specifications & Installation

Performance Parameters

Model
Motor Power (KW)
Speed (r/min)
Flow (L/min)
Discharge Pressure (MPa/cm2)
Max Suction Vacuum (m)
Inlet/Outlet Diameter
KCB18.3 (2CY-1.1/14.5-2)
1.5
1400
18.3
1.45
5
3/4″
KCB33.3 (2CY-2/14.5-2)
2.2
1420
33.3
1.45
5
3/4″
KCB55 (2CY-3.3/3.3-2)
1.5
1400
55
0.33
5
1″
KCB55 (2CY-3.3/3.5-2)
2.2
1420
55
0.5
5
1″
KCB83.3 (2CY-5/3-2)
2.2
1420
83.3
0.33
5
1.5″
KCB83.3 (2CY-5/5-2)
3
1420
83.3
0.5
5
1.5″
KCB200 (2CY-8/3.3-2)
4
1440
200
0.33
5
2″
KCB200 (2CY-12/1.3-2)
4
1440
200
0.13
5
2″
KCB200 (2CY-12/3.3-2)
5.5
1440
200
0.33
5
2″
KCB200 (2CY-12/6-2)
5.5
1440
200
0.60
5
2″
KCB200 (2CY-12/10-2)
7.5
1440
200
1.00
5
2″

Operating Manual

Installation

  1. Before installation, check whether the pump has been damaged during transportation, ensuring the motor is not damp and that the dust covers on the pump inlet and outlet are intact.

  2. Before installing the pipeline, clean the inner walls of the pipe using water or steam to remove any dirt or impurities. Ensure the pump does not bear the weight of the pipeline to avoid affecting the pump’s precision.

  3. The pipeline connections must be sealed to ensure the pump can properly draw liquid, preventing suction issues.

  4. To prevent debris from entering the pump, install a metal filter at the suction inlet.

Operation & Running

  1. Check that all fasteners are securely tightened.

  2. Ensure the drive shaft rotates smoothly.

  3. Confirm that the intake and outlet valves are fully open.

  4. Verify the correct rotation direction of the pump (viewing from the pump end towards the motor, it should rotate counterclockwise).

Precautions

  1. Monitor the pressure and vacuum gauge readings to ensure they remain within the specified range.

  2. Check the stuffing box. If leakage occurs, tighten the stuffing box cover (but avoid over-tightening to prevent overheating and rapid wear of the sealing ring).

  3. If abnormal noise or excessive temperature rise occurs during operation, immediately stop the pump and investigate the cause.

  4. Do not adjust the safety valve arbitrarily. If adjustment is needed, use instruments to calibrate the safety valve to the appropriate pressure setting.

Stopping the Pump

  1. Turn off the power supply.

  2. Close the intake and outlet valves.

OEM & Custom

We offer OEM branding, stainless steel versions, copper gear options, high-temperature models, custom seals, custom port sizes, special-voltage motors, and export-grade packaging.

FAQs

  1. 1. What liquids can the KCB/2CY pump handle?
    Lubricating oil, diesel, heavy oil, and clean non-corrosive oils.
  2. 2. Can it handle corrosive liquids?
    Yes, if using stainless steel gear pump versions.
  3. 3. Does it require priming?
    No, the pump has strong self-priming capability.
  4. 4. Is a safety valve included?
    Yes, all pumps include an integrated safety valve for over-pressure protection.
  5. 5. What is the maximum temperature?
    Standard ≤70°C; high-temperature versions up to 200–300°C.
  6. 6. What seal types are available?
    Packing seal, rubber seal, skeleton seal, and graphite packing.
  7. 7. Can you provide OEM customization?
    Yes, including materials, voltage, seals, gears, and branding.