Fixed Displacement Hydraulic Motor A2FE

1.Fixed displacement motor A2FM of axial piston , bent axis design,suitable for hydrostatic drives in open and closed circuits.

2.Use in mobile and industrial applications

3.The output speed depends on the flow capacity of the pump and the displacement of the motor

4The torque increases with the pressure different between the high and low pressure side and with increasing displacement

5.One piece pistons with piston rings

Detailed description

The A2FM is a fixed displacement motor with an axial piston and bent axis design, specially developed to be suitable for hydrostatic drives in both open and closed circuits. Its bent axis structure ensures efficient power transmission, minimizes internal mechanical wear, and maintains stable performance in different circuit systems, making it adaptable to various hydraulic drive scenarios. This motor is widely used in both mobile and industrial applications, including construction machinery, agricultural equipment, and industrial hydraulic stations, capable of withstanding the harsh working environments of mobile equipment and meeting the stable operation requirements of industrial systems. The output speed of the A2FM motor is determined by the flow capacity of the matched pump and its own displacement—higher pump flow or smaller motor displacement will result in higher output speed, enabling flexible adjustment to meet different operational speed needs. Its torque increases with the pressure difference between the high and low pressure sides, and also rises with increasing displacement, ensuring it can provide sufficient power to drive heavy loads stably. Additionally, the motor adopts one-piece pistons with piston rings, which enhances sealing performance, reduces internal oil leakage, improves volumetric efficiency, and effectively extends the motor’s service life and operational reliability.

Technical Data

Pressure at port A or B

Nominal pressure--------Pn = 35MPa

Peak pressure---------Pmax = 40MPa

The sum of the pressure at port A or B must not exceed 710MPa

(Individual pressure on either.side max, 40MPa)

Maximun pernissible case pressure

Pca-----------0.2MPa

tmin------------ -25℃

tmax------------ +80℃

Viscosity Range

Vmin (for short periods)--------- 10mm2/s

Vmax (for short periods)--------- 1000mm2/s

Optimun Operating

viscosity

Vopt--------- 16-36mm2/s

Fluid Recommendations

Operatingtemperature range DIN51519 or ISO(VG) Recommendations viscosity class to DIN51519ISO(VG)
30-40℃ VG22 22mm2/s at 40°C
40-50℃ VG35 32mm2/s at 40°C
50-60℃ VG46 46mm2/s at 40°C
60-70℃ VG68 68mm2/s at 40°C
70-80℃ VG100 100mm2/s at 40°C

Filtration of Fluid

Recommended filtration:10um,Coarser filtration of 25-40um,is possible,but with filtration of10um.longer service life life is obtained (reduce wearing).

Speed Range

No limitation on minimum Speed nmin,if high uniformity of rotation is required, nmin should not be lower than 50 rpm.See table for maximum Speed nmax.

Mounting Position

Optional.The housing must always be filled with oil.

Calculation of size

Motor
Flow Q=(Vg∙n)/(1000∙ηv) (L/min)
Torque M=(1.59Vg∙Δp∙ηmb) (Nm)
Power P=Mn/9549=(Q∙Δp∙ηt)/60 (KW)
Speed n=(1000∙Q∙ηv)/Vg (r/min)
Vg:geom.displacement(ml/r)
Δp:Pressure differential(MPa)
n:Speed
ηv:volumetric efficiency
nmp:mech.hydr.efficiency
ηt:Overall efficiency
tηy∙ηmh]
Technical Data (theoretical Values, without considering ηv
ηmh ∙Values rounded off)
Size 55 80 107 125 160
Displaement Vg ml/r 54.8 80 107 126.3 160
Max.Speed nmax r/min 3750 3350 3000 3000 2650
Max.flow Qmax L/min 206 268 321 379 424
Torque constants MK Nm/MPa 8.71 12.74 16.97 20.1 25.40
Max.Torque
Δp=35MPa
M Nm 305 446 594 703.5 889
Max. Power
Δp=35MPa
P KW 120 156 187 221 247
Moment of inertia
about drive shaft
J Kgm2 0.0052 0.0109 0.0167 0.0322 0.0532
Weight (approx) Kg

A2FE