AZMF-12-008-URR12ML SO018

The AZMF-12-008-URR12ML SO018 external gear motor belongs to the AZMF External Gear Motors series from Bosch Rexroth, and it supplies hydraulic automation systems with compact, consistent flow. A displacement of 8 cm³ per revolution defines the volume of fluid moved each turn, providing predictable actuator speed in proportional drives. Its reversible direction of rotation allows the same motor to power forward and reverse movements without additional components. Minimum operating speed is 500 min^-1 so circuits can idle without stalling, while a maximum of 4000 min^-1 supports high-speed cycles when rapid positioning is needed. The unit is intended for use with mineral oil that meets DIN/ISO standards, thereby aligning with common power unit fluids. NBR sealing elements retain this oil and guard against external leakage under typical temperature ranges.

The drain interface is arranged axially, which keeps case leakage directed straight back to the reservoir and simplifies vertical mounting. A threaded connection sized M12×1.5 secures the drain hose and maintains serviceability in confined spaces. Continuous drain-line pressure may reach 3 bar without risking seal deformation, and the design tolerates starting drain pressures up to 10 bar to accommodate cold-oil viscosity peaks. A filter beta ratio of 20 = 75 is specified so that at least 97 % of particles 20 µm and larger are removed before the oil returns to the motor, while a cleanliness class of ISO 4406 19/16 sets the acceptable contamination level to protect the gear pair from abrasive wear. Together, these limits and connection features help maintain reliable service life within mobile and stationary hydraulic equipment.