MFB piston motor

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Product details

MFB Piston Motor

Technical Introduction

MFB is a classic fixed‑displacement inline axial piston motor manufactured by Vickers. It features high pressure, high speed, high efficiency and compact structure, and is widely used in industrial and mobile hydraulic systems.

1. Series Specifications

- MFB5: 10.5 cm³/r (0.64 in³/r)

- MFB10: 21.12 cm³/r (1.29 in³/r)

- MFB20: 42.8 cm³/r (2.61 in³/r)

- MFB29: 61.6 cm³/r (3.76 in³/r)

- MFB45: 94.4 cm³/r (5.76 in³/r)

2. Core Technical Parameters

- Structure: Inline fixed‑displacement axial piston type

- Rated pressure: 210 bar (3000 psi)

- Peak pressure: 245 bar (3500 psi)

- Speed range: 100–3600 rpm (higher speed for smaller displacements)

- Efficiency: Volumetric efficiency ≈ 97%, overall efficiency ≈ 93%

- Rotation: Reversible by reversing oil flow direction

- Mounting options: Flange mounting or foot mounting

3. Model Code Explanation (Example: MFB29‑UF‑20)

- MFB: Series code for fixed‑displacement piston motor

- 29: Displacement code (61.6 cm³/r)

- U: Rotation direction (U = bi‑directional rotation)

- F: Mounting style (F = foot mount; non‑F = flange mount)

- 20: Design and seal version

4. Structure & Features

- Inline axial piston design with coaxial cylinder block and drive shaft, compact and high power‑density

- Fixed‑displacement design, simple structure, low cost and high reliability

- High‑efficiency valve plate and spherical piston assembly, stable low‑speed performance and high‑speed efficiency

- Reversible rotation by swapping inlet and outlet ports without extra components

- Full‑filled housing lubrication for long service life of internal parts

5. Typical Applications

- Industrial hydraulics: Injection molding machines, machine tool spindles, conveyors, winding machines

- Mobile machinery: Aerial work platforms, forklifts, mini‑excavators, agricultural machinery

- General machinery: Fans, pump drives, slewing devices

6. Main Differences Between MFB and A6VE55EP

- MFB: Fixed displacement, inline type, 210 bar, max. 3600 rpm, for industrial and light‑duty mobile equipment

- A6VE55EP: Variable displacement, bent‑axis type, 400 bar, max. 2400 rpm, for heavy‑duty mobile machinery

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