SG025 MFB45 MFB50

Characteristics of the Toshiba SG025 MFB45 MFB50 hydraulic motor

Toshiba SG025 is a hydraulic geared motor designed to drive the slewing mechanism in mobile construction equipment, particularly crawler excavators. This unit is a combination of an axial piston hydraulic motor and a planetary gearbox, providing high torque at low rotational speed, necessary for precise and smooth slewing of the work platform. The MFB45 and MFB50 models are variations within this series.

Technical specifications of the Toshiba SG025 MFB45 MFB50 hydraulic motor:

• Type: Hydraulic motor-reducer for platform rotation
• Design: It is a single unit consisting of:
  • Hydraulic motor: An axial piston motor with a swash plate that converts hydraulic energy into mechanical rotation.
  • Gearbox: Built-in multi-stage planetary gearbox, which significantly increases the torque on the output shaft.
  • Valve block: Usually integrated into the housing, includes safety and brake valves for safe operation.
• Working volume:
  • MFB45: approximately 45 cm³/rev.
  • MFB50: approximately 50 cm³/rev.
• Nominal working pressure: 250-280 bar (25-28 MPa).
• Maximum peak pressure: up to 350 bar (35 MPa).
• Output speed: 10-15 rpm.
• Weight: approximately 60-80 kg.
• Application: The SG025 gear motor is used in hydraulic turning systems of excavators and other mid-range special equipment (approximately 7-15 tons).

Cross numbers of hydraulic motors: 4364923, 0443500, 4421246, 0735700, 4417646, 0767400

Installed in the equipment model:

• Hitachi EG40R, EX60-5(LC), EX60BUN-5, EX70LCK-5, EX75UR-5, EX75US-5, EX80U, ZX75US
• XCMG XE80C

The company "Aspect Plus" offers a wide range of spare parts for repairing the Toshiba SG025 MFB45 MFB50 hydraulic motor.