RKL4327 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKL4327 is a motor power cable from the RKL Motor Power Cables series with a conductor composition of 4x4.0, 2x1.0, and 2x1.5 mm². It features a PUR jacket in orange, an outer diameter of 17.0 mm, and is designed to withstand 5,000,000 bending cycles.
Internal Product Review
The RKL4327 is a robust motor power cable from Bosch Rexroth Indramat, engineered for high-flex applications with 5,000,000 bending cycles and a PUR matte jacket for durability. It features a conductor configuration of 4x4.0 + 2x1.0 + 2x1.5 mm², supporting stable power and signal transmission. This cable is ideal for dynamic environments where long service life and reliable performance are priorities.
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Product Description:
The RKL4327 cable is produced by Bosch Rexroth Indramat for the RKL Motor Power Cables series and is intended to carry three-phase power and control signals between a drive controller and a servo motor in automated machinery. At the controller end, it is terminated with an RLS0722/K04 molded plug, allowing direct connection to Rexroth drive modules without additional adapters. The orange PUR sheath identifies the cable as a dedicated motor lead inside machine cabinets and drag-chain installations where electrical noise immunity and mechanical endurance are required.
The electrical layout uses a compact bundle of 4 × 4.0 mm² + 2 × 1.0 mm² + 2 × 1.5 mm² conductors, separating power, brake, and feedback circuits while keeping the overall cross section small. The power cores have a cross-sectional area of 4.0 mm², while the auxiliary pairs use the 1.0 mm² and 1.5 mm² control wire sizes assigned to pins 5 through 8. Conductor resistance at 20 °C is limited to 4.95 Ω/km, which minimizes voltage drop over long runs. Capacitance between adjacent cores is limited to 0.8 nF/m, supporting accurate current control by reducing the reactive load on the drive. The cable is supplied on INK0603 bulk reels and has an outer diameter of 17.0 mm. Its adhesion-free, matte PUR sheath withstands oils and cleaning agents commonly found in production cells.
For moving-axis applications, the cable withstands 5,000,000 flex cycles when installed with a minimum dynamic bend radius of 7.5 × D. Stationary wiring may use a tighter static bend radius of 5 × D. The sheath is orange (RAL 2003) for motor-power identification, and internal fillers maintain conductor spacing during repeated motion. At the motor end, the assembly is fitted with a keyed RLS1301/C06 connector that locks against vibration and provides strain relief during continuous carrier travel.
