MLS300S-3A-0450-RNNN Bosch Rexroth Indramat
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MPN: R911337834
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The Bosch Rexroth Indramat MLS300S-3A-0450-RNNN is a synchronous linear motor from the MLS Synchronous Linear Motors series. It features a motor size of 300, an overall width of 345 mm, and a pole pitch of 37.5 mm. The motor has an IP65 protection rating and weighs 48.30 kilograms.
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Product Description:
Bosch Rexroth Indramat’s MLS300S-3A-0450-RNNN is a secondary section from the MLS Synchronous Linear Motors series, designed to produce thrust when paired with a moving primary coil. This passive rail carries laminated iron teeth that close the magnetic circuit and convert drive currents into direct linear force. It installs along machine beds or gantry beams and supports automation tasks that demand smooth, backlash-free motion, such as material-handling stages or precision assembly lines.
This secondary belongs to motor type S, meaning the tooth pattern and magnet spacing follow the standard polarity scheme used by MLS tracks. The active portion has a segment length code of 0450, providing a continuous magnetic track that mates with corresponding primary sections. The motor has a size code of 300 and an overall width of 345 mm, allowing integration into wide gantry axes. A pole pitch of 37.5 mm sets the electrical repeat distance and determines the commutation cycle frequency. The secondary weighs 48.30 kg, which must be considered when sizing the supporting machine structure and selecting installation equipment. The section is secured with screws, allowing it to be bolted directly to suitable steel or aluminum base frames without auxiliary clamps.
The assembly uses a ferromagnetic base plate, which reinforces the magnetic flux path and supports installation on a compatible machine table through the screw connections. It also includes a mechanical cover sheet that helps protect the tooth edges from contaminants and incidental contact during operation. The assembly carries an IP65 rating, providing complete protection against dust ingress and resistance to low-pressure water or coolant jets. During operation, the secondary must remain below 70 °C to preserve magnetic performance and limit thermal expansion that could affect pole alignment. The mounting surface should be flat and sufficiently rigid to maintain consistent spacing between the primary and secondary sections across the full travel distance. Proper alignment also helps prevent mechanical contact while allowing the linear motor to generate smooth thrust along the installed track.
