RKH0021 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKH0021 is a Basic model hybrid cable that belongs to the RKH Hybrid Cables series. This ready-made cable features Plug Connector RHS0021 at both ends and supports 5,000,000 bending cycles. It allows for a dynamic bending radius of 8xD and operates within a temperature range of -40 to 80 degrees Celsius.
Internal Product Review
The RKH0021 is a Bosch Rexroth Indramat hybrid cable designed for high flexibility, rated for up to 5,000,000 bending cycles and a dynamic bending radius of 8xD. Featuring plug connectors RHS0021 on both ends and a robust operating temperature range from -40°C to 80°C, this ready-made cable is well-suited for demanding automation environments. Overall, this cable combines durability and reliability for dynamic industrial applications.
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Product Description:
The RKH0021 is a preterminated motion-control cable produced by Bosch Rexroth Indramat for the RKH Hybrid Cables series. The assembly combines power conductors, signal pairs, and auxiliary lines within one jacket, allowing a single cable run to connect servo drives with moving axes in automated machinery. Consolidating these electrical paths reduces the number of separate cables required in a carrier and helps conserve space inside control panels. The integrated design also simplifies routing through dynamic cable tracks where repeated movement requires an orderly and compact connection between stationary drive equipment and mobile machine components.
The cable is supplied as a ready-made unit with factory-crimped ends, so it does not require field termination before installation. Its service life is rated for up to 5,000,000 flex cycles when it is routed through an energy chain under continuous motion. During dynamic operation, the cable must maintain a minimum bend radius of 8 × D, meaning each moving loop must remain at least eight times larger than the cable’s outer diameter. The materials remain suitable for operation at temperatures as low as -40 °C, helping the insulation and shielding retain flexibility during cold starts. Power, feedback, and auxiliary contacts terminate in a single keyed mating component on the drive side. This connection uses an RHS0021 plug connector, which helps prevent incorrect alignment during connection.
For stationary routing, the cable permits a minimum bend radius of 4 × D, allowing tighter turns inside cabinets or other fixed sections of the machine. Continuous operation is permitted at temperatures up to 80 °C, supporting routing near equipment that produces elevated ambient heat. The hybrid cable construction places power and feedback cores within a shared outer jacket, which reduces the amount of carrier space needed for the complete electrical path. This arrangement also keeps related conductors together as the cable moves through its repeated travel cycle. The cable has a basic configuration that uses the standard shielding arrangement for this product line. Proper support along fixed and moving sections helps prevent excessive twisting, localized pressure, and bends that are tighter than the permitted limits.
