Bosch Rexroth | AZ-M-F-12-019-URR12ML-SO018
AZ-M-F-12-019-URR12ML SO018
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The AZ-M-F-12-019-URR12ML SO018 gear motor is a member of the AZMF External Gear Motors series produced by Bosch Rexroth for hydraulic automation where compact flow generation is required. With a displacement of 19.0 cm³ per revolution, the unit delivers a defined volume of oil each turn to drive cylinders or actuators. It operates with mineral-oil based hydraulic fluid, aligning with common power unit reservoirs. The motor can accelerate up to 3000 rpm so it supports high-speed circuits that demand rapid motion. A starting viscosity limit of 2000 mm²/s permits cold-start operation without undue wear, while a minimum permissible viscosity of 12 mm²/s maintains film strength at elevated temperatures. Hydraulic cleanliness must be held to ISO 4406 class 19/16 to protect the gear faces, and a β20=75 filter rating ensures particulate removal at the specified efficiency.
For installation in machinery spaces up to 80 °C, the motor withstands an ambient temperature of 80 °C and the hydraulic fluid may also reach 80 °C without derating. It sustains steady motion down to 500 rpm, letting designers employ low-speed feeds when precise control is needed. Universal direction of rotation allows the shaft to turn either way, simplifying circuit layout because no dedicated left- or right-hand model is required. Shaft sealing is handled by NBR material, providing compatibility with the specified mineral oils and resistance to the stated temperature range. The rear cover is supplied with an axial drain oil line so case leakage can be routed directly to tank. A dedicated M12 x 1.5 drain port with a usable thread depth of 13 mm supports secure fitting of return hoses and prevents thread stripping during service.
Technical Specifications
Ambient Temperature Max (nbr)
80 °C
Cleanliness Class
ISO 4406 19/16
Direction Of Rotation
Universal
Displacement
19.0 cm3/rev
Drain Port Thread
M12x1.5
Drain Port Usable Depth Min
13 mm
Filter Rating
β20=75
Fluid Type
Mineral Oil-Based Hydraulic
Max Fluid Temperature (nbr)
80 °C
Max Rotation Speed
3000 min-1
Min Rotation Speed
500 min-1
Rear Cover Option
Drain Oil Line (Axial)
Seals Material
NBR
Starting Viscosity Max
2000 mm2/s
Viscosity Permitted Min
12 mm2/s
1620 Old Apex Road
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