Bosch Rexroth IndraDrive Accessories R911170436 Tension Spring Connection

Technical Dossier

Product Details And Specifications

Bosch Rexroth IndraDrive Series Technical Notes

The Bosch Rexroth IndraDrive series represents one of the most widely deployed servo drive platforms in global heavy industry. Installed across petrochemical refineries, nuclear power auxiliary systems, offshore drilling rigs, steel rolling mills, and large-scale chemical processing plants, IndraDrive systems are recognized for their deterministic motion control, integrated safety functions (Safe Torque Off, Safe Stop 1/2), and compatibility with open fieldbus architectures including PROFIBUS, PROFINET, EtherCAT, SERCOS III, and CANopen. The platform spans single-axis and multi-axis configurations, covering power ranges from 0.37 kW to over 110 kW per axis, making it a reference architecture for both OEM machine builders and end-user plant maintenance teams worldwide.

The accessory and connection hardware layer — including components such as the R911170436 Tension Spring Connection — is critical to the mechanical and electrical integrity of IndraDrive cabinet assemblies. These components ensure reliable conductor termination under vibration, thermal cycling, and the high-current demands of industrial servo applications.

The Evolution of IndraDrive Architecture

Bosch Rexroth's servo drive lineage traces from the early DIAX02 / DIAX03 analog drive systems of the 1980s through the digital ECODRIVE (DKC) platform of the 1990s, which introduced SERCOS I/II fiber-optic communication. The IndraDrive C (HCS) and IndraDrive M (HMS/HMD) families, introduced in the early 2000s, unified the hardware platform around a common firmware base (IndraWorks / IndraMotion), enabling modular multi-axis topologies with shared DC bus architecture.

The IndraDrive Cs (HCS01) compact series extended the platform to space-constrained applications, while the IndraDrive Mi (KSM/KMS) motor-integrated drives eliminated cabinet wiring entirely for distributed axis architectures. Current-generation systems support Rexroth Open Core Engineering, enabling IEC 61131-3 PLC programming, high-level language integration (C++, Java), and IoT connectivity via OPC UA. Legacy ECODRIVE and early IndraDrive hardware remains in service at many sites, creating sustained demand for spare parts, connection hardware, and firmware-compatible replacement modules.

IndraDrive Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced components across the IndraDrive and associated Rexroth drive accessory ecosystem. Classifications follow Rexroth's functional taxonomy.

Drive Controllers – IndraDrive C (Single-Axis Cabinet)

• HCS02.1E-W0012-A-03-NNNN: IndraDrive C, 12A continuous, EtherCAT, standard cooling
• HCS02.1E-W0028-A-03-NNNN: IndraDrive C, 28A continuous, multi-fieldbus, standard cooling
• HCS02.1E-W0054-A-03-NNNN: IndraDrive C, 54A continuous, high-power single axis
• HCS03.1E-W0070-A-03-NNNN: IndraDrive C, 70A, extended power range, integrated brake chopper
• HCS03.1E-W0100-A-03-NNNN: IndraDrive C, 100A, heavy-duty servo axis controller

Drive Controllers – IndraDrive M (Multi-Axis / Shared DC Bus)

• HMD01.1N-W0012-A-07-NNNN: IndraDrive M double-axis module, 12A per axis, PROFINET
• HMS01.1N-W0036-A-07-NNNN: IndraDrive M single-axis supply module, 36A, regenerative
• HMV01.1E-W0030-A-07-NNNN: IndraDrive M supply unit, 30kW, mains filter integrated
• HMV01.1R-W0045-A-07-NNNN: IndraDrive M regenerative supply, 45kW, energy recovery

IndraDrive Cs – Compact Single-Axis

• HCS01.1E-W0006-A-02-B-ET: IndraDrive Cs, 6A, EtherCAT, compact format
• HCS01.1E-W0013-A-02-B-ET: IndraDrive Cs, 13A, EtherCAT, DIN rail mount

Connection & Accessory Hardware

• R911170436: Tension spring connection terminal — mechanical conductor retention component for IndraDrive cabinet wiring assemblies; ensures vibration-resistant, tool-free conductor termination in high-cycle environments
• R911316557: Shield connection clamp set for IndraDrive power cables; EMC-compliant shielding termination
• R911299814: Connector set, signal interface X8/X9, IndraDrive C/M series
• R911307485: Mating connector kit, encoder interface X7, 15-pin D-sub
• R911170777: Braking resistor, external, 100W / 100Ω, IndraDrive Cs compatible

Communication & Fieldbus Modules

• HMS01.1N-W0020-A-07-NNNN: PROFIBUS DP master/slave communication option, IndraDrive M
• R911299786: SERCOS III fiber optic transceiver module, IndraDrive C/M

Sourcing Hard-to-Find & Obsolete IndraDrive Parts

The IndraDrive platform has been in production since approximately 2003. First-generation HCS02 and HMD01 modules produced before 2010 are now classified as RFQ availability review (LA) or end of life (EOL) by Bosch Rexroth. Components such as the R911170436 tension spring connection, early-revision connector kits, and legacy ECODRIVE DKC accessories are no longer stocked through standard distribution channels.

DriveKNMS maintains a dedicated inventory of verified IndraDrive spare parts, including EOL hardware, sourced through controlled supply chains. All units are subject to pre-shipment functional verification. For plant operators running IndraDrive systems beyond the standard 10-year support window, DriveKNMS provides lifecycle extension support including: cross-reference to compatible replacement SKUs, firmware version matching for refurbished drive modules, and long-term supply agreements for critical spare parts.

Quality Control for the IndraDrive Range

IndraDrive modules and accessories processed by DriveKNMS undergo a structured inspection protocol adapted to the complexity of the platform's backplane communication and DC bus architecture:

• Visual inspection: PCB condition, capacitor integrity, connector pin alignment, and housing damage assessment on all drive modules.
• DC bus pre-charge test: Controlled ramp-up to rated DC bus voltage to verify rectifier and capacitor bank condition before full power application.
• Communication interface verification: SERCOS III, PROFINET, and EtherCAT port continuity and protocol handshake testing using Rexroth-compatible test equipment.
• Firmware version audit: Confirmation of installed firmware against Rexroth MPx release matrix to ensure compatibility with target control system.
• Mechanical hardware inspection: For connection accessories including R911170436, spring tension force measurement and conductor retention pull-test per IEC 60999-1 criteria.
• Burn-in cycle: Drive modules subjected to 24-hour loaded operation at rated current to screen latent failures prior to shipment.