The SB System Box Units series is part of the Rexroth Tightening System 300 and is used to house tightening-system electronics in compact modular form for single-channel or multi-channel installations.
In the provided material, the SB301 is intended for one tightening channel, while the SB305 can accommodate up to five tightening channels, giving the series a role between simple standalone setups and larger card-rack-based systems. These system boxes are designed around plug-in module construction, allowing the controller, power electronics, and communication-related components to be installed as standardized modules for straightforward system assembly and expansion. The series works within a modular tightening architecture that can scale up to 40 channels and is coordinated through communication units and PC-based operating software. Overall, the SB series is intended for tightening applications that require compact enclosure-based electronics, modular channel configuration, and integration with Rexroth’s System 300 control platform.
