MRT161E-3N-0080-NNNN Bosch Rexroth Indramat
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MPN: R911327573
The Bosch Rexroth Indramat MRT161E-3N-0080-NNNN is part of the MRT Synchronous IndraDyn T Motors series and features screw mounting with twelve fastening holes. The rotor has an inner diameter of 80 mm, a mass of 6.3 kg, and a rotor inertia of 0.01500 kg·m². This motor supports a maximum mechanical speed of 2200 min^-1, with axial and radial attractive forces of 145 N and 1070 N respectively.
Internal Product Review
The MRT161E-3N-0080-NNNN is a Bosch Rexroth Indramat MRT synchronous IndraDyn T motor built for accurate and dependable rotary motion. Screw mounting with 12 fastening holes supports secure installation in demanding machine assemblies. A maximum mechanical speed of 2200 min^-1 and radial attractive force of 1070 N make the motor a strong performer for stable high-speed operation.
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Product Description:
The MRT161E-3N-0080-NNNN is a rotor element produced by Bosch Rexroth Indramat for the MRT Synchronous IndraDyn T Motors series. Installed inside a direct-drive torque motor, this component interacts with the stator’s magnetic field to deliver precise angular motion without gear reduction. This arrangement supports indexing tables, printing cylinders, and other automation axes that require high-resolution, zero-backlash positioning. Because torque is transferred directly to the driven load, the assembly avoids the mechanical play and transmission losses associated with gearboxes.
The rotor can tolerate an axial magnetic pull of 145 N while withstanding a radial attractive force of 1070 N; these limits establish the bearing and housing loads that must be absorbed by the machine frame. During operation, it may spin at up to 2200 rpm, so the drive controller must keep commanded motion below this mechanical ceiling. Dynamic response is aided by a rotational inertia of only 0.01500 kg·m², allowing the servo loop to command rapid speed changes without excessive torque demand. The inner bore measures 80 mm, providing clearance for cable passages or pneumatic lines that run through hollow-shaft assemblies in compact machinery. The open center also allows the motor to surround an existing machine shaft when the supporting structure provides suitable alignment and load capacity.
The rotor face is drilled for 12 fasteners and uses a screw-mounting pattern that corresponds to the companion stator flange. This arrangement provides evenly distributed clamping around the rotor face and helps maintain concentric alignment during rotation. The net moving mass is 6.3 kg, which affects start-stop energy and the holding requirements of vertical axes. Connection to the shaft extension or hub is provided by a central thread measuring M5 with a depth of 12 mm. The available thread depth permits secure engagement while helping prevent the mounting hardware from bottoming inside the threaded hole. Proper support of the magnetic forces and accurate centering of the mounting surfaces are necessary to prevent uneven air gaps between the rotor and stator.
