RKG0039 Bosch Rexroth Indramat

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The Bosch Rexroth Indramat RKG0039 belongs to the RKG Encoder Cables series and is designed for drag chain use with up to 5,000,000 bending cycles. This cable features a PUR adhesion-free jacket, is halogen-free and oil resistant, and uses a D-sub 15-pin controller connector.

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Product Description:

The RKG0039 is an encoder cable produced by Bosch Rexroth Indramat within the RKG Encoder Cables series. Designed for servo systems, the cable links the motor-side encoder to the drive controller, carrying differential feedback signals required for closed-loop position control in automated production cells, packaging lines, and material-handling axes. Its mechanical design supports frequent motion inside cable tracks while its electrical characteristics match standard Rexroth encoder interfaces, ensuring that positional data reach the controller without timing errors or signal reflections.

Its stranded pair layout follows the specification 4×2×0.25 mm² + 2×0.5 mm², giving eight signal cores plus two power conductors arranged for balanced impedance and low crosstalk. Each 0.25 mm² signal core exhibits a resistance of 83.0 Ω/km, so voltage drop remains minimal over typical machine lengths. The molded controller end terminates in a D-sub 15-pin plug that mates directly with Indramat drive encoder sockets, eliminating adapter hardware. Despite continuous articulation, the sheath sustains up to 5,000,000 bending cycles before conductor fatigue arises. An overall outer sheath with an 8.8 mm diameter fits standard cable clamps while still accommodating the required twisted-pair geometry.

The outer layer is a PUR jacket, selected for abrasion resistance and to prevent adhesive buildup inside energy-chains. Because the cable is halogen-free, it emits low-toxicity fumes during an electrical fault and meets plant safety directives. It is also oil resistant, allowing installation near hydraulic actuators without swelling or embrittlement. Finally, its design is drag-chain rated, so repeated flexing along short radii occurs without kinking or loss of shielding performance during its expected operational life.

Bending Cycles
5,000,000
Conductor Construction
4x2x0.25 mm² + 2x0.5 mm²
Conductor Resistance (0.25 Mm²)
83.0 Ohm/km
Controller Connector
D-sub 15-pin
Drag Chain Use
Yes
Halogen-free
Yes
Jacket Material
PUR (adhesion-free)
Oil Resistance
Yes
Overall Diameter
8.8 mm

Frequently Asked Questions about RKG0039:

Q: How many bending cycles can the Bosch Rexroth Indramat RKG0039 encoder cable withstand?

A: The RKG0039 encoder cable is designed to endure up to 5,000,000 bending cycles.

Q: What type of controller connector does the RKG0039 cable use?

A: This cable features a D-sub 15-pin controller connector for interfacing with compatible devices.

Q: What is the conductor construction of the RKG0039 encoder cable?

A: The conductor construction for this cable is 4x2x0.25 mm² plus 2x0.5 mm².

Q: What type of jacket material is used on the RKG0039 encoder cable?

A: The cable has a PUR jacket that is adhesion-free for enhanced durability.

Q: Can the Bosch Rexroth Indramat RKG0039 be used in drag chain setups?

A: Yes, the RKG0039 is suitable for use in drag chain applications.


Internal Product Review

  • ‘‘The RKG0039 from Bosch Rexroth Indramat is an encoder cable designed for demanding industrial motion applications, featuring 5,000,000 bending cycles for reliable drag chain use. The halogen-free PUR jacket and oil resistance ensure safe deployment in harsh environments. This cable stands out for its robust construction and long operational life.’’

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