Hydraulic Two Stage Gear Pumps

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Hydraulic two-stage gear pumps are designed to convert mechanical energy into hydraulic energy by using the motion of gears to move fluid through the system. They are ideally used in the ... Read More

Hydraulic two-stage gear pumps are designed to convert mechanical energy into hydraulic energy by using the motion of gears to move fluid through the system. They are ideally used in the construction, agriculture and manufacturing industries. Raptor Supplies offers a wide range of these gear pumps from brands like Chief and Haldex Barnes. Read Less

CHIEF -

Hydraulic Gear Pumps

CHIEF CBNA-8.8/3.6AA
CHIEF 250092B
CHIEF 250093C
StyleModelInput RpmShaft Dia.Shaft LengthPrice (ex. VAT)
ACBNA-8.8/3.6A36001/21.5$304.71
B25009240001/2"1.5"$277.74
C25009340001/2"1.5"$329.87
HALDEX BARNES -

Gear Pump 2 Stage 3600 Rpm

HALDEX BARNES 1080085A
StyleModelPrice (ex. VAT)
A1080085$630.12
A1080086$689.87

Hydraulic Two Stage Gear Pumps

Hydraulic two-stage gear pumps, often called log splitter pumps, combine multiple flow lines at low pressures, but only use one pump when the pressure is high. Raptor Supplies offers an array of Chief and Haldex Barnes gear pumps used with presses, clamps and compactors. These pumps provide an automatic 2-speed operation; where the first stage unloads fully at 450 PSI while the second stage can go up to 3000 PSI. They are available in direct and external drive options.

Features

Chief Hydraulic Gear Pumps

  • These pumps are capable of delivering flow rates up to 13 gpm at elevated pressures and have a maximum pressure rating of 3000 psi (207 bar).
  • They feature cast iron construction with a gear design that allows easy movement of fluid throughout the system in two-speed operation.
  • These hydraulic pumps move clockwise and are compatible with a variety of fluids, including synthetic oils, water-and petroleum-based fluids.
  • They are capable of withstanding temperatures ranging from 40 to 100 degrees Celsius.
  • These units come integrated with a four-bolt mounting flange and a removable cover for easy access to internal components.

Haldex Barnes Gear Pumps

  • These two-stage hydraulic pumps are ideal for use with log splitters, compactors and pressing units.
  • They utilise a 12 hp motor that powers the pump and creates the necessary fluid flow in a hydraulic system.
  • These log splitter pumps are capable of delivering a maximum flow rate of 28 gpm at a maximum pressure rating of 3000 psi.
  • They feature a CWSE (clockwise shaft end) rotation and are compatible with synthetic & petroleum oils and water-based fluids.
  • They incorporate a two-bolt mounting flange that secures the pump to a mounting plate or other structural components of the hydraulic system.

Working Mechanism

  • The 2-stage hydraulic gear pumps are designed to combine multiple flow lines at low pressures but use only one pump when the pressure in the system is high.
  • The first stage of the pump consists of a smaller set of gears that creates a low-pressure flow of fluid.
  • This low-pressure flow is then directed into the second stage of the pump, consisting of a larger set of gears that work together to increase the pressure of the fluid.

Frequently Asked Questions

What is a mounting flange in 2-stage gear pumps?

A mounting flange is a part of two-stage hydraulic pumps that provide a secure and stable mounting point while reducing vibration and ensuring the smooth functioning of the pump. It allows the installation and removal of the pump with minimal ease for maintenance and repair purposes.

What is the difference between direct and external drives?

  • In direct drive configuration, the motor is mounted directly onto the pump housing. Here, both the motor and pump share a common shaft, allowing for a direct transfer of power from the motor to the pump. Direct drives are compact in size and simpler in design, making them easier to install and maintain.
  • In external drive configuration, on the other hand, the motor and pump are separate entities that are connected by a coupling or belt drive. The motor is mounted outside of the pump housing and is connected to the pump through a mechanical linkage. External drives are more complex in size but offer greater flexibility in terms of motor selection and positioning.

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