RL2-521CBB Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RL2-521CBB is a motor power cable from the RL2 Motor Power Cables series. It features 4 power and 4 auxiliary conductors, supports a rated voltage of 600/1000 V for power and 450/750 V for signals, and has a cross section of 1.0 mm². The cable has a maximum operating temperature of 80°C when fixed, an outer diameter of 12.0 mm, and is designed for the second generation of motors.
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Product Description:
The RL2-521CBB motor power cable is produced by Bosch Rexroth Indramat for the RL2 Motor Power Cables series. Intended for 2nd-generation drive packages, it links IndraDrive controllers to synchronous motors while housing both power and auxiliary circuits in one jacket. By combining these functions, the cable reduces cabinet pass-throughs and simplifies installation in conveyors, pick-and-place robots, and other automated equipment.
This specific RL2 variant uses a Basic cable design identified as type 4x L + 4x 0.75 mm², meaning the four load cores are joined by four smaller auxiliaries within the same PVC sheath. The cable carries motor phase energy through 4 power conductors arranged alongside 4 auxiliary conductors that can be assigned to brake or sensor supply lines. Each core has a copper cross-section of 1.0 mm², while the overall leakage capacitance stays at 0.4 nF/m to limit reactive currents in long runs. Power insulation is rated for up to 600/1000 V, whereas the control pair complies with 450/750 V, letting mixed-voltage circuits share the same routing corridor.
Despite the mixed conductors the outside diameter is limited to 12.0 mm, keeping routing space modest inside energy chains. For fixed routing the minimum bending radius is 5 × D; during continuous motion it should not tighten beyond 7.5 × D to protect the insulation. The sheath tolerates ambient temperatures from -30 °C when fixed to +80 °C, and from -20 °C up to +60 °C during flexing, so the assembly can operate beside motors and drives that cycle through warm-up and cool-down phases. Robot joints can also rotate the assembly thanks to an allowable torsion of ±30 °/m, supporting multi-axis layouts. The product belongs to the Rexroth Cable group, streamlining sourcing when identical harnesses are required across several machines.
Wake Industrial can arrange same-day shipping for urgent maintenance schedules. A 1-year warranty is included with every purchase. Quotations remain valid for 30 days so planners can align budgets before ordering.
Frequently Asked Questions about RL2-521CBB:
Q: What is the outer diameter of the RL2-521CBB motor power cable?
A: The RL2-521CBB cable has an outer diameter of 12.0 mm, providing a compact yet durable form factor.
Q: How many auxiliary conductors are included in the RL2-521CBB cable?
A: This cable is equipped with 4 auxiliary conductors to support additional functions beyond power transmission.
Q: What is the rated power voltage for the RL2-521CBB cable from Bosch Rexroth Indramat?
A: The RL2-521CBB features a rated voltage of 600/1000 V for power applications.
Q: What is the minimum bending radius for flexible use of the RL2-521CBB cable?
A: For flexible installations, the minimum bending radius is specified as 7.5 times the cable diameter.
Q: What is the maximum operating temperature for the RL2-521CBB cable in fixed and flexible installations?
A: The RL2-521CBB cable can operate in temperatures up to +80 °C when fixed, and up to +60 °C when flexible.
