(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    4.5/5.5/6.5/7.5 GPM Hydraulic Single Gear Pump, 3600 psi

    5 out of 5 based on 1 reviews | Write a review
    Hydraulic single gear pump working at 3000 psi pressure (maximum 3600 psi), affordable price. Displacement 4.5/5.5/6.5/7.5 Max. GPM, rated speed 1800 rpm, max 4000 rpm, volumetric efficiency 92%, mechanical efficiency 88%, clockwise or counterclockwise rotary direction, mounting flange JIS 4-bolt. Reliable manufacturer, small hydraulic external gear pump for industrial/commercial uses.
    SKU: ATO-HGPP-4567
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Buy 3600 psi hydraulic single gear pump from ideal supplier. Optional displacement 4.5/5.5/6.5/7.5 Max. GPM, speed 500~4000 rpm, clockwise or counterclockwise rotary is provided. ATO hydraulic gear pump has small size, high pressure, high efficiency and low price, which has wide applications in automobile, hardware, industrial machinery, textile, commercial machinery, chemical equipment, environmental protection, military industry, national defense, etc.


    Model ATO-GPY
    Displacement mL/ rev
    2.9 4.1 5.7 7 7.9 8.8 9.9 11.4 11.8
    Max. GPM (Gallon/min)
    3 4.3 4.5 5.5 6.3 5.8 6.5 7.5 7.8
    Rated Speed 1800 rpm 1800 rpm 1800 rpm 1800 rpm 1800 rpm 1800 rpm 1800 rpm 1800 rpm 1800 rpm
    Max. Speed 4000 rpm 4000 rpm 3000 rpm 3000 rpm 3000 rpm 2500 rpm 2500 rpm 2500 rpm 2500 rpm
    Min. Speed 700 rpm 700 rpm 600 rpm 600 rpm 600 rpm 500 rpm 500 rpm 500 rpm 500 rpm
    Rated Pressure 3000 psi (21 MPa)
    Max. Pressure 3600 psi (25 MPa)
    Volumetric Efficiency 92% 92% 92% 92% 92% 93% 93% 93% 93%
    Mechanical Efficiency 88% 88% 88% 88% 88% 90% 90% 90% 90%
    Weight 1.2 kg 1.2 kg 1.2 kg 1.2 kg 1.2 kg 1.4 kg 1.4 kg 1.4 kg 1.4 kg
    Rotary Direction clockwise, counterclockwise
    Mounting Flange JIS 4-bolt


    1. Please use ATO gear pump with sufficient oil, otherwise there is a risk of burnout!
    2. Calculate the actual displacement value according to the formula: Gallon/min=displacement (ml/rev)*rated speed 1800rpm/3785.412L (speed variation range 500rpm-3000rpm).


    • Hydraulic single gear pump uses high-strength aluminum alloy shell and alloy steel hard gear transmission, which is light in weight and stable in transmission.
    • Hydraulic single gear pump is suitable for JIS 4-bolt standard flange installation. The input shaft connection form is flat key shaft.
    • Hydraulic single gear pump has an automatic compensation mechanism for axial and radial clearances, which enables the oil pump to maintain high volumetric efficiency and high mechanical efficiency for a long time.
    • Hydraulic single gear pump uses SP gears, with small fluctuation, high pressure, low noise and stable performance.
    • DU composite material bearings and high-performance sealing elements, small starting torque, good sealing performance, and strong anti-fouling ability, so that hydraulic single gear pump can work efficiently under harsh working conditions.

    4.5/5.5/6.5/7.5 GPM Hydraulic Single Gear Pump Dimensions Diagram (Unit: mm)

    Dimensions of 4.5/5.5/6.5/7.5 GPM Hydraulic Single Gear Pump, 3600 psi

    Displacement L1 L2
    2.9 mL/ rev 39.9 78
    4.1 mL/ rev
    5.7 mL/ rev
    7 mL/ rev

    7.9 mL/ rev

    8.8 mL/ rev 43.7 91
    9.9 mL/ rev
    11.4 mL/ rev
    11.8 mL/ rev


    4.5/5.5/6.5/7.5 GPM Hydraulic Single Gear Pump Details

    Tips: The influence of oil seal on hydraulic single gear pump.

    If the oil seal of hydraulic single gear pump is worn out, the rubber seal ring in the pump will deteriorate and lose its elasticity, and it will lose its sealing and isolation effect on the high-pressure oil chamber and the low-pressure oil chamber. This will cause the oil pressure in high-pressure oil chamber to flow to low-pressure oil chamber, reducing the working pressure and flow rate of hydraulic single gear pump. The self-tightening oil seal of ATO hydraulic single gear pump is a skeleton type oil seal with a spring. If the oil seal is damaged or disrepaired for a long time, air will be sucked into the oil pump from the gap between oil seal and the main shaft journal, and enter the oil tank through the return pipe, producing a lot of bubbles in oil tank. This will cause the oil in oil tank to decrease, and the oil in the engine oil sump will increase, making the oil cylinder lift slowly or unable to lift.

    Existing reviews of 4.5/5.5/6.5/7.5 GPM Hydraulic Single Gear Pump, 3600 psi
    Hydraulic single gear pump with good sealing performance
    I saw that the ATO product page description mentioned good sealing performance, so I bought it without hesitation. After testing, its sealing performance is indeed very good, and the product quality is reliable.
    From: Alexc | Date: 27/07/2021
    Was this review helpful? Yes No (0/0)
    Load more reviews...
    Write your review for 4.5/5.5/6.5/7.5 GPM Hydraulic Single Gear Pump, 3600 psi
    • Only registered users can write reviews
    • Bad
    • Excellent