RKB0021 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RKB0021 is part of the RKB Control Cables series and serves as a ready-made Ethernet cable with RJ45 connectors on both ends. It supports the Sercos III bus system, features a cable bending cycle rating of 3,000,000, and operates within a temperature range of -40 to 70 degrees Celsius.
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Product Description:
The RKB0021 is a ready-made control cable supplied by Bosch Rexroth Indramat within the RKB Control Cables series. It is an Ethernet variant built on the Basic model layout and is delivered fully terminated to speed up cabinet wiring. In an automation cell this cable links Sercos slave devices to the network interface of IndraDrive controllers, providing deterministic data exchange while resisting continuous motion.
At both ends the assembly carries RJ45 plugs with a straight orientation, matching standard panel jacks without extra adapters. Inside the moulded hoods a four-core design maintains the defined characteristic impedance for the Sercos III real-time bus. The conductor bundle tolerates up to 3,000,000 flex cycles, so the cable can be routed through cable chains that move every machine cycle. Mechanical stress is further limited by a minimum dynamic bend radius of 7.5xD; when the machine is idle the static radius may be relaxed to 5xD. The ready-made concept eliminates on-site crimping, lowering installation error rates while keeping electrical parameters within the tolerance window dictated by the protocol.
Environmental limits reinforce applicability on the factory floor. Signal integrity is maintained from -40 °C up to 70 °C during operation, and the assembly can be stored down to -50 °C without jacket embrittlement; the upper storage limit equals the operating maximum at 70 °C. Its 4-pin layout maps directly to the transmit and receive pairs required by Fast Ethernet, so no unused conductors add weight. Because the cable model is Basic and the variant is Ethernet, shielding and twist pitch are selected to meet EMC targets while keeping overall diameter small enough for routing through energy chains that follow the mentioned radii.
Frequently Asked Questions about RKB0021:
Q: How many bending cycles can the Bosch Rexroth Indramat RKB0021 cable withstand?
A: The RKB0021 control cable supports up to 3,000,000 bending cycles for reliable performance in dynamic applications.
Q: Which bus system is the RKB0021 control cable compatible with?
A: This model is designed for use with Sercos III networks, ensuring compatibility with that bus system.
Q: What type and orientation of connectors does the RKB0021 cable use?
A: The RKB0021 features RJ45 connectors on both ends, each with a straight orientation.
Q: What is the operating temperature range for the RKB0021 Ethernet cable?
A: The cable is capable of operating in temperatures ranging from -40 °C to 70 °C.
Q: How many pins are present in the RKB0021 Ethernet control cable?
A: As a ready-made Ethernet variant, the RKB0021 cable includes four pins for signal transmission.
