Name: A4FM A4FM22 A4FM28 A4FM40 A4FM56 A4FM71 A4FM125 A4FM250 A4FM500 A2FM63/6.1W-PAB04 Hydraulic Fixed Displacement Motor
Brand: Lainuo
SKU: 256462636

A4FM series axial plug fixed displacement motor Features：
– Axial Piston Fixed Displacement Motor A4FM of swashplate
– Output speed is proportional to input flow and inversely proportional to motor displacement.
– Output torque increases with the pressure drop across the motor between the high and low pressure sides.
– Long service life, optimum efficiencies
– Compact design for special applications where A2FM cannot be applied
– Proven rotary group in swashplate-technology

A4FM series axial plug fixed displacement motor Installation location

The axis is horizontal at the bottom. When installed on the fuel tank, it is not allowed to use the installation position of "axis horizontal, suction port facing bottom"!

Installation below the fuel tank level

The pump position is below the minimum oil level in the tank (standard)

Before starting through the highest position of the housing drain port, fill the axial piston pump

Suggestion: Add oil suction pipeline

Run the motor at low speed (ignition speed) until the motor system is completely filled

The minimum immersion depth of the oil suction or discharge pipeline in the fuel tank is 200 millimeters (relative to the lowest oil level in the tank).

Installation position higher than the fuel tank level

Motor installed above the minimum oil level in the fuel tank

➔ Installation position below the fuel tank level

➔ It is not allowed to use the installation positions of "shaft against the top" and "shaft horizontal, oil suction port at the bottom" (when stopping, the pump housing leaks oil through the oil suction pipeline).

➔ Attention: - Maximum allowable straw length hmax=800 mm

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A4FM series axial plug fixed displacement motor Notes on the selection of the hydraulic fluid

In order to select the correct fluid, it is necessary to know the operating

temperature in the loop (closed circuit) or the tank temperature (open

circuit) in relation to the ambient temperature.

The hydraulic fluid should be selected so that within the operating

temperature range, the operating viscosity lies within the optimum

range (νopt) (see shaded section of the selection diagram). We

recommend that the highest possible viscosity range should be chosen

in each case.

Example: At an ambient temperature of X°C the operating

temperature is 60°C. Within the operating viscosity range (νopt;

shaded area), this corresponds to viscosity ranges VG 46 or VG 68.

VG 68 should be selected.

Important: The leakage oil (case drain oil) temperature is influenced

by pressure and motor speed and is always higher than the circuit

temperature. However, at no point in the circuit may the temperature

exceed 115°C for sizes 22...56 or 90°C for sizes 71...500.

If it is not possible to comply with the above condition because of

extreme operating parameters or high ambient temperatures we

recommend housing flushing. Please consult us.

About Us:
Ningbo Lainuo Hydraulic Technology Co., Ltd. specializes in hydraulic pumps, hydraulic motors, and hydraulic valves. It is an advanced domestic manufacturing enterprise that integrates the design, research and development, production, sales, and maintenance of hydraulic systems, with 10 years of professional hydraulic experience. Our hydraulic products are mainly used in heavy-duty engineering machinery series such as construction machinery, marine machinery, mining machinery, oilfield machinery, soil stackers, rollers, loaders, forklifts, cranes, mixer trucks, concrete pump trucks, etc. We have specialized skills.Our sales personnel with extensive experience in the industry, sales managers with good communication skills and cross-border procurement experience, provide professional hydraulic maintenance and testing technology services to customers. We have a long warranty period and after-sales service, and integrity is always our commitment. If you are interested in purchasing, please feel free to consult and negotiate. We look forward to your cooperation!

A4FM series axial plug fixed displacement motor General

At start-up and during operation the motor housing has imperatively

to be filled up with hydraulic fluid (filling of the case chamber). Startup has to be carried out at low speed and without load till the system

is completely bleeded.

At a longer standstill the case may discharge via operating line. At

new start-up a sufficient filling of the housing has to be granted.

The leakage oil in the housing has to be discharged to the tank via

highest positioned case drain port.

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