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RKL4515 Bosch Rexroth Indramat

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The RKL4515 from Bosch Rexroth Indramat is a robust power cable featuring a PUR jacket and a power conductor size of 16.0 mm², ensuring durability and reliable current transmission. With a maximum travel velocity of 5 m/s and a 50-meter horizontal travel path, this cable is ideal for demanding automated motion systems. Its construction and performance specs make it a dependable choice for dynamic industrial applications.

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Product Description:

The RKL4515 is a motor power cable manufactured by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It carries drive output from an inverter or servo amplifier to a synchronous or induction motor, while ancillary cores carry brake or temperature-monitoring signals between the motor and cabinet. In automated machinery, the cable links moving carriages with fixed control panels, so electrical integrity must be maintained during continuous flexing and high-cycle motion.

The copper cores assigned to the motor phases have a cross-sectional area of 16.0 mm², and the integrated signal pair has a cross-sectional area of 1.5 mm². This balance allows the power and control conductors to share a common jacket without uneven heat buildup. The insulation is rated for 600 V AC, making the cable suitable for typical low-voltage drive systems. Loop resistance is limited to 1.21 Ω/km, minimizing copper loss over long runs and keeping voltage drop within servo tolerances. Capacitance between the cores and shield is 1.2 nF/m, allowing predictable drive filtering and reducing common-mode currents. Continuous conductor temperatures may reach +90 °C in fixed routing and +80 °C during flexing, allowing operation in dense, warm enclosures.

The assembly supports horizontal travel of up to 50 m in cable chains, and linear motion is supported at speeds of up to 5 m/s without mechanical fatigue. An external diameter of 25.5 mm allows the cable to fit standard drag-chain separators, while a durable PUR outer jacket resists oils and coolants commonly found on machining centers. Static installation requires a minimum bend radius equal to five times the outer diameter. Dynamic applications require a minimum bend radius equal to seven and a half times the outer diameter to protect the conductor braids during repeated movement.

Conductor Resistance (20 °c)
1.21 Ω/km
Control Conductor Size
1.5 mm²
Discharge Capacity
1.2 nF/m
Jacket Material
PUR
Max Horizontal Travel Path
50 m
Max Travel Velocity
5 m/s
Max Wire Temp (fixed)
+90 °C
Max Wire Temp (flex)
+80 °C
Min Bend Radius (fixed)
5 x D
Min Bend Radius (flex)
7.5 x D
Operating Voltage (power)
600 V AC
Outer Diameter
25.5 mm
Power Conductor Size
16.0 mm²

Frequently Asked Questions about RKL4515:

Q: What is the maximum horizontal travel path supported by the RKL4515 cable?

A: The RKL4515 power cable is designed for a maximum horizontal travel path of 50 meters.

Q: What type of jacket material is used on the RKL4515 power cable?

A: This model features a jacket made from PUR material, offering resistance to abrasion and oil.

Q: What is the power conductor size of the RKL4515 motor power cable?

A: The power conductor size for this cable is 16.0 mm², enabling efficient power transmission.

Q: What is the minimum bend radius for flexible use of the RKL4515 cable?

A: A minimum bend radius of 7.5 times the cable diameter is required for flexible installations.

Q: What is the operating voltage rating of the RKL4515 cable's power conductors?

A: The RKL4515 is rated for an operating voltage of 600 V AC for the power conductors.

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