AZMF-12-014UQR12ML-S0022

The AZMF-12-014UQR12ML-S0022 gear motor is manufactured by Bosch Rexroth for the AZMF External Gear Motors series. It serves as a hydraulic power source in mobile or industrial equipment where compact external gear stages convert mechanical drive energy into pressurized flow. A displacement of 14 cm³ per revolution fixes the volume of hydraulic fluid delivered each shaft turn, allowing designers to size circuits accurately. Universal rotation enables the shaft to be driven in either direction, which simplifies mounting in bidirectional circuits. The unit supports a maximum speed of 3000 min⁻¹ so high-speed prime movers can be connected without overspeeding the gear set, while a minimum speed of 500 min⁻¹ prevents boundary lubrication issues at low flow. Permitted kinematic viscosity spans from 12 mm²/s to 800 mm²/s, giving the motor tolerance for a wide range of oil grades during normal service. A starting viscosity ceiling of 2000 mm²/s lets the machine start safely in cold oil conditions without excessive torque load. An NBR shaft seal is fitted to contain the working fluid and resist the mineral-oil based media commonly found in hydraulic systems.

Ambient operating temperatures can be as low as –30 °C and as high as +80 °C, which lets the motor function in cold outdoor machinery as well as heated factory lines. The hydraulic fluid itself may reach +80 °C, matching the upper ambient limit so cooling system sizing remains straightforward. A leakage-line pressure rating of 3 bar defines the allowable backpressure on the case drain, protecting the seal system from overload. Drain oil leaves through an axial connection, and the drain port uses an M12 × 1.5 thread to fit standard metric fittings. Oil cleanliness is governed by ISO 4406 code 19/16, and a filter with a Beta 20 value of 75 is specified to achieve that level, minimizing abrasive wear on the gear teeth. These filtration requirements combine with the earlier viscosity limits to secure long service life. Together, the environmental limits and drainage details complete the specification set and show how the motor integrates into hydraulic circuits that may face wide temperature swings and moderate case pressures.