RHB2-021DCB by Bosch Rexroth Indramat

The RHB2-021DCB cable is produced by Bosch Rexroth Indramat as part of the RHB2 Encoder Cables series. It is classified as a Rexroth cable with a basic design and combines encoder feedback conductors with auxiliary power conductors in one assembly. The cable is intended to connect MS2(x) servo motors directly to ctrlX DRIVE servo inverters in automated production lines. It serves as the link for feedback signals and auxiliary supply lines between the motor and the drive. By carrying both signal and support power in one sheath, it reduces the number of separate cable runs between the motor and drive.

The cable is rated for 5,000,000 bending cycles, which supports repeated flexing in continuous motion systems such as handling axes and pick-and-place equipment. During dynamic operation, it requires a minimum bend radius of 7.5 x D so the conductors are not forced into an overly tight curve while the cable is moving. Its temperature range extends from -40 °C to +80 °C, supporting use in cold and warm industrial environments. The cable uses a conductor cross-section of 1.5 mm² for feedback and auxiliary power circuits. This size supports the electrical load carried by the hybrid design without adding unnecessary bulk to moving cable paths.

Signal and auxiliary power are routed through an M23 Hybrid Connector at the molded cable end, and the connector works with the SPEEDCON quick-locking system. The hybrid layout keeps encoder pairs and power conductors inside one outer jacket, which simplifies cable handling and preserves a compact connection path. For stationary installation, the minimum bend radius is 5 x D, so fixed cabinet routing can be tighter than moving routing. The assembly uses S electrical coding for direct motor-to-drive connection. The molded end also helps maintain a secure interface at the connection point during industrial use.