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Eaton’s MFB series hydraulic motors are axial piston, fixed displacement, inline design units capable of operating in either direction of rotation. They offer a choice of five torque ratings, with speeds ranging from 100 to 3600 r/min and pressures up to 210 bar (3000 psi).
Key Features:
1）High Efficiency: Overall operating efficiency can be as high as 93%, with volumetric efficiency up to 97%, depending on motor size, pressure, speed, fluid viscosity, and temperature.
2）Compact Design: The inline piston design provides high performance in a compact package, requiring minimal installation space.
3）Reversible Rotation: Rotation can be reversed simply by changing the direction of flow through the motor ports, offering flexibility in various applications.
4）Low-Speed Capability: Minimum operating speeds can vary between 50 and 100 r/min, depending on motor size and drive load characteristics.
5）Proven Reliability: The MFB series has demonstrated rugged service across various machinery applications, providing significant cost and weight savings while maintaining high efficiency inherent in piston units.
These features make the MFB series suitable for applications requiring reliable and efficient hydraulic power, such as industrial machinery and mobile equipment.
Type: MFB5, MFB10, MFB20, MFB29, MFB45
| MODEL | MFW/MVW 250 | MFW/MVW 360 | MFW/MVW 500 | MFW/MVW | ||
| Design | Swashplate type | Swashplate type | Swashplate type | Swashplate type | ||
| Type of mounting | Flange- or foot-mounted. Combination units foot mounted only. | |||||
| Pipe connection SAE Flange | B A | psi psi | 11/2”= 6000 | 11/2”= 6000 | 2”= 6000 | 2”= 6000 |
| Direction of rotation | Bi-directional | Bi-directional | Bi-directional | Bi-directional | ||
| Speed range | nmin1nmax2 | min1min1 | 80 1800 | 80 1800 | 80 1800 | 80 1500 |
| Installation position | Optional,see mounting information. | |||||
| Ambient temperature range | min max | °C °C | -20 50 | -20 50 | -20 50 | -20 50 |
| Weight | M | kg | 212 | 220 | 340 | 395 |
| Mass of inertia | J | kg m2 | 0.146 | 0.152 | 0.5 | 0.55 |
| HYDRAULIC CHARACTERISTICS | ||||||
| Nominal pressure (100% duty cycle) | pN | bar | 350 | 350 | 350 | 350 |
| Output pressure | pAmin/pBmin pBmax/pAmax | bar bar | 2 | 2 | 2 | 2 |
| Pressure can be applied to the motor outlet but the sum of pAmaxand pBmaxmust not exceed the maximum value of 420 bar. | ||||||
| Maximum pressure to DIN 24312 | pmax | bar | 420 | 420 | 420 | 420 |
| Hydraulic fluid | Hydraulic oil to DIN 51524 part 2. Refer to section Application Data-Fluid Recommendations. | |||||
| Hydraulic fluid temperature range | min max | °C °C | -25 (on startup) 90 | -25 (on startup) 90 | -25 (on startup) 90 | -25 (on startup) 90 |
| Viscosity range for continuous operation | min max | cSt cSt | 10 75 | 10 75 | 10 75 | 10 75 |
| Maximum permissible start viscosity | max | cSt | 1000 | 1000 | 1000 | 1000 |
| Filtering | ISO 4406 | 18/15/13 | 18/15/13 | 18/15/13 | 18/15/13 | |
| Maximum geometric absorption rate® | at 1500 min-1at 1800 min-1 | VgmaxVgmax | cm3cm3 | 250 250 | 360 360 | 500 500 |
| Minimum geometric absorption rate | Vgmin | cm3 | When no minimum adjustment stop is specified,minimum geometric absorption rate is set at 35% of Vgmax. | |||
| Maximum geometric motor flow | n= 1500 min-1n= 1800 min-1 | 99 119 | 142 171 | 198 238 | 297 - | |
| Case pressure | pvmax | bar | maximum 0.5 bar over pAmin/pBmin,pVax= 4 bar abs.,pVax= 6 bar abs. with special shaft seal. | |||
| DRIVE | ||||||
| Maximum driving torque - (pAmaxor pBmaxη= 100%) | M1 Single | Nm | 1670 | 2405 | 3340 | 5000 |
| Max. power consumption - n= 1800 min-1(pAmaxor pBmaxη= 100%) | P1 Single | kW | 307 | 454 | 630 | 787 |
| COMBINATION UNITS | ||||||
| Maximum driving torque combination unit splined shaft only | M1 | Nm | 2x 1670 | 2x 2405 | 5000 | 5000 |
| 1) Minimum speed for continuous operation 2) Higher speed available on request 3) Tolerance + 1% | ||||||
