MRS312B-2N-0160-NNNN Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
The Bosch Rexroth Indramat MRS312B-2N-0160-NNNN is an open kit motor from the MRS Synchronous IndraDyn H Motors series. It has a degree of protection rated at IP00 and can withstand an axial attractive force of 690 Newtons and a radial attractive force of 9180 Newtons. The motor operates with a sound pressure level below 75 decibels and is designed for use at minimum spindle temperatures down to -20 degrees Celsius.
Internal Product Review
The MRS312B-2N-0160-NNNN is an open kit motor in the MRS Synchronous IndraDyn H series with IP00 protection. Sound pressure below 75 dB(A) supports refined machine integration, while a minimum spindle temperature of -20 °C broadens operating readiness. High force capability stands out through 9180 N radial attractive force and 690 N axial attractive force.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The MRS312B-2N-0160-NNNN is a frameless synchronous motor stator-rotor set supplied by Bosch Rexroth Indramat for use within the MRS Synchronous IndraDyn H Motors series. As a kit motor, it mounts directly into machine spindles or rotary tables where limited axial space and high torque density are important. In automated machining centers, it converts drive current from an IndraDrive inverter into accurate rotary motion for positioning and constant-speed cutting tasks. Direct integration also removes the need for a separate motor housing, which helps conserve installation space in compact spindle designs.
Because the unit is built as an open kit motor, it has no external housing, so cooling and enclosure functions are handled by the host machine. The bare construction results in a protection rating of IP00, which means the windings and magnets must be shielded from dust and liquids by the surrounding enclosure. Startup in cold workshops is permitted down to a spindle temperature of -20 °C; below that point, insulation integrity and lubrication can be compromised. The rotor creates an axial magnetic pull of 690 N, so suitable thrust bearings are required to prevent unwanted preload on the spindle assembly. Dynamic loads are transferred through the mounting flange, which uses alignment shoulders for repeatable centering during installation. The host assembly must also provide an adequate thermal path so heat can leave the stator during continuous operation.
During high-speed operation, the magnetic circuit also produces a radial attractive force of 9180 N, so bearing selection must account for continuous side loading in addition to process forces. Acoustic emission stays below a sound pressure level of <75 dB(A), which helps keep machine noise within typical industrial limits. For hydraulic tool clamping, the stator endplate is tapped for 2 pressure-oil screws that feed oil into the spindle channel. A single step-fit interface accepts 1 O-ring to seal that connection and help prevent leakage at the joint. These magnetic forces act continuously while the spindle is energized, so shaft stiffness and bearing arrangement must match the intended operating duty.
