10/20/25/30 GPM Hydraulic Gear Pump, 3600 psi

4.8 out of 5 based on 6 reviews | Write a review

$325.54

Reliable manufacturer hydraulic gear pump for sale online. High displacement 10/20/25/30 Max. GPM for choose, working pressure 2900~3600 psi, speed 1500~2500 rpm, volumetric efficiency 90~93%, mechanical efficiency 82~85%, oil ports thread connection, multi-direction inlet/outlet is available, small size, economic price.

Displacement (Max. GPM) *
Rotation Direction *
Installation Flange *

SKU: ATO-HGPP-2345

Qty:

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Delivery date: 6-12 days

Overview
Proposition 65 Warning

Hydraulic gear pump has high working pressure of 2900~3600 psi. Displacement 10/20/25/30 Max. GPM for selection, rated speed 1500rpm, maximum 2500 rpm. The hydraulic gear pump has small size and compact structure, applications include industrial/agricultural/commercial machinery, construction machinery, environmental protection equipment, and chemical equipment, etc.

Specification

Model	ATO-CBNZQ
Displacement	mL/ rev
	25	31.5	40	50	63	80
	Max. GPM (Gallon/min)
	9.9	12.5	15.9	19.8	25	31.7
Rated Speed	1500 rpm	1500 rpm	1500 rpm	1500 rpm	1500 rpm	1500 rpm
Max. Speed	2500 rpm	2500 rpm	2500 rpm	2500 rpm	2500 rpm	2500 rpm
Min. Speed	500 rpm	500 rpm	500 rpm	500 rpm	500 rpm	500 rpm
Rated Pressure	2900 psi (20 MPa)
Max. Pressure	3600 psi (25 MPa)
Volumetric Efficiency	90%	90%	90%	93%	93%	93%
Mechanical Efficiency	82%	82%	82%	85%	85%	85%
Way of oil in and out	Rear in, rear out
Installation Flange	110 x 86mm, φ 12mm
Rotary Direction	Right, Left

Note:

Please use ATO gear pump with sufficient oil, otherwise there is a risk of burnout!
Calculate the actual displacement value according to the formula: Gallon/min=displacement (ml/rev)*rated speed 1500rpm/3785.41L (speed variation range 500rpm-3000rpm).

Features

Hydraulic gear pump uses high-strength aluminum alloy shell and alloy steel hard gear transmission, which is light in weight and stable in transmission.
Installation of the hydraulic gear pump is 110 x 86/φ12 standard flange. Input shaft connection is spline. Connection type of the oil inlet and outlet ports is threaded.
Hydraulic 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 gear pump uses metric gears, with small fluctuation, high pressure, low noise and stable performance.
Hydraulic gear pump uses composite material bearings and high-performance sealing elements, has a small starting torque and good tightness, and can work efficiently under harsh working conditions.
The oil inlet and outlet pipe joints can realize multi-directional inlet and outlet, and can be ordered in any combination according to users.

20/30/40/50 GPM Hydraulic Gear Pump Dimensions Diagram (Unit: mm)

Displacement	L	A	B
25 mL/ rev	120	49.5	6
31.5 mL/ rev	124	49.5	6
40 mL/ rev	130	49.5	6
50 mL/ rev	137	49.5	6
63 mL/ rev	146	49.5	6
80 mL/ rev	158	49.5	6

According to the design requirements of 31.7 GPM hydraulic gear pump, the coaxiality between the rotation axis of the prime mover and the gear pump is not more than 0.1mm.

Tips: How to use hydraulic gear pump correctly?

It is recommended to use L-HM46 or hydraulic oil with similar viscosity in summer and L-HM32 or hydraulic oil with similar viscosity in winter. The working hydraulic oil temperature of hydraulic gear pump is -20℃-80℃. If the oil temperature is too high, it will seriously affect the life of the seals. Please choose a reasonable cooling system. In addition, pay attention to check the rated speed and rated pressure of the hydraulic gear pump. Over-speed and over-pressure work will also seriously affect its performance.
Do not directly use belt pulleys, sprockets, gears, etc. to make the main shaft bear radial force without the drive bearing installed.
When using the hydraulic gear pump for the first time, pay attention to the exhaust of the pipeline, so as not to cause unfavorable phenomena such as unstable pressure, insufficient pressure, insufficient flow, and loud noise.
The running speed of hydraulic gear pump should not be lower than 500r/min, so as to avoid insufficient oil absorption, resulting in malfunction and damage to the gear pump.

*WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

Existing reviews of 10/20/25/30 GPM Hydraulic Gear Pump, 3600 psi

Determining the Rotation Direction

I want to know how to determine the rotation direction of the pump. If viewed from the front (inlet and outlet), I know I can distinguish between left-hand and right-hand rotation. If viewed from the front (inlet and outlet facing me), I need to know if the shaft rotates clockwise. I need to know which direction the shaft should rotate. Thank you.

From: Holt | Date: 09/10/2026