RKG0020 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKG0020 is part of the RKG Encoder Cables series and features a PUR jacket in RAL 2003 orange. It has a D-Sub 15-pin connector on the controller side and a 10-pin clamp terminal on the motor side. The cable is suitable for drag chains, supports up to 5,000,000 bending cycles, and has total shielding.
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Product Description:
The RKG0020 encoder cable is produced by Bosch Rexroth Indramat for the RKG Encoder Cables series. This preassembled lead connects motor-mounted encoders to the corresponding drive or motion controller, carrying differential position signals and auxiliary supply lines in automated machinery. By providing a dedicated feedback path, the cable helps the control loop maintain precise axis positioning while simplifying on-site wiring because the supply and data conductors are integrated inside a single flexible industrial jacket.
Its mechanical design supports 5,000,000 flexing cycles, so it can be routed through continuously moving drag-chain carriers without early fatigue. To avoid insulation damage during motion, the jacket is molded from adhesion-free, matte PUR, and its surface is colored RAL 2003 (orange) for clear identification in mixed cable trays. When installed in energy chains, the conductors must follow a minimum bend radius of 7.5 × D, which equates to approximately 66 mm for this cable. An overall shield encloses the conductor bundle, suppressing electromagnetic noise that could distort encoder pulses. With an outer diameter of 8.8 mm, the harness occupies minimal space while still withstanding the abrasion found in industrial machinery.
The motor end terminates on a clamp terminal strip that accepts the ten encoder leads, while the controller end is fitted with a D-Sub 15-pin plug for direct insertion into standard Rexroth drive cards. Copper conductors can reach a fixed-routing temperature of 90 °C, permitting installation in warm control cabinets without thermal derating. Control circuits may be energized up to 300 V, providing adequate insulation headroom for lower-voltage encoder auxiliary supplies. Four twisted signal pairs use 0.25 mm² conductors, while the dedicated 2 × 0.5 mm² cores carry auxiliary power separately from the position signals. This conductor arrangement limits interference between the supply and feedback paths as the cable moves through the machine. The flexible jacket, shielded topology, and separated conductor groups support operation in applications that require frequent, repetitive movement.
