RHB2-021DDB Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RHB2-021DDB is a basic hybrid cable from the RHB2 Encoder Cables series, featuring an M23 hybrid motor connector and a cross section of 1.5 mm². It supports a current carrying capacity of 15.6 A and is rated for 5,000,000 bending cycles, with a dynamic bending radius of 7.5 times the diameter. This cable is compatible with MS2(x) and ctrlX DRIVE series connections.
Internal Product Review
The RHB2-021DDB is a Bosch Rexroth Indramat hybrid encoder cable designed for demanding motion systems in the RHB2 series. This cable stands out with a 15.6 A current carrying capacity and support for up to 5,000,000 bending cycles, ensuring robust performance in dynamic applications. Its M23 hybrid connector and compatibility with ctrlX DRIVE make it a dependable choice for modern drive solutions.
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Product Description:
The RHB2-021DDB is an encoder and power hybrid cable produced by Bosch Rexroth Indramat as part of the RHB2 Encoder Cables series. This model links the MS2 family of synchronous servo motors with the ctrlX DRIVE infeed or inverter modules through an integrated signal and supply path. The arrangement supports compact routing inside machine frameworks and reduces connector count on automated axes, making it suitable for multi-axis packaging machines, gantries, and handling robots that rely on precise encoder feedback alongside motor power within a single flexible assembly.
The cable is qualified for 5,000,000 flexing cycles, so drag-chain installations can run long duty cycles without conductor fracture. A dynamic bending radius of 7.5xD defines the minimum curvature during motion, while the permitted stationary loop tightens to 5xD when the machine is at rest, protecting insulation from cold-bend stress. Its copper conductors have a cross-section of 1.5 mm², providing low resistive loss, and they can carry up to 15.6 A continuously, enough to supply low-power servo phases and encoder electronics simultaneously.
The construction follows the Hybrid Cables concept, combining power cores, signal pairs, and protective earth under one outer jacket. Termination on the drive side uses the S (M23) coded circular connector, and the motor end is fitted with an M23 Hybrid plug that mates directly to the MS2(x) stator housing. The assembly is recognised within the ctrlX DRIVE ecosystem, while a basic design designation indicates standard outer sheath and shielding materials for general industrial environments. Together these attributes ensure consistent electrical behaviour and mechanical reliability throughout the cable’s service life.
