How to Identify Bosch Rexroth Part Numbers for Replacement Components

Bosch Rexroth is one of the world's leading manufacturers of drive and control technology. Their components are found in manufacturing lines, machine tools, hydraulic systems, and automation installations across virtually every industrial sector. When a Rexroth component fails or reaches end of life, the speed and accuracy with which the replacement is identified and sourced directly determines how quickly production can resume.

Understanding how Bosch Rexroth part numbers work, where to find them, and how to use them to source the correct replacement is a practical necessity for maintenance engineers and procurement teams. This page explains the process clearly and explains how K2 Automation supports customers in sourcing Rexroth parts, including components that are discontinued or no longer available through standard channels.

What Do Bosch Rexroth Part Numbers Mean?

Bosch Rexroth uses part numbers to uniquely identify every component in their product range. A part number encodes specific information about the component's type, model variant, technical specification, and in some cases its production series or firmware version. For automation components such as servo drives and PLC modules, the part number may also indicate the communication interface or expansion card configuration.

The format of Rexroth part numbers varies by product family. Drive components such as the IndraDrive and EcoDrive series use alphanumeric codes that encode the drive type, power rating, and feature set. Hydraulic components use a different encoding convention that reflects the series, nominal size, and pressure rating. Control system components, including IndraControl PLCs and operator panels, use yet another format. The consistent element across all of these is that the full part number is the definitive identifier for the exact component you need.

Using only part of a part number, or attempting to substitute a similar-looking part from a different series, creates a significant risk of compatibility failure. Bosch Rexroth components are engineered to work as systems, and within those systems the firmware version, communication protocol, and electrical interface of each component must match the system's requirements precisely. A servo drive with a slightly different firmware level or a PLC module with a different memory specification may not function correctly as a replacement, even if the physical form factor appears identical.

Where to Find the Bosch Rexroth Part Number

The part number for any Bosch Rexroth component is recorded in several locations, and knowing where to look saves significant time when a replacement is urgently needed.

If the component label is damaged, worn, or missing — which is not uncommon on equipment that has been in service for many years — the part number can often be retrieved from the original machine documentation, electrical schematic drawings, the machine builder's bill of materials, or from a Bosch Rexroth service report if one was carried out on the equipment. In some cases, K2 Automation's team can assist in identifying a component from photographs, physical dimensions, and partial information.

Why the Correct Part Number Matters

The industrial automation sector has a clear principle around component replacement: like for like, specification for specification. The reasoning is straightforward. An automation system is designed and commissioned around the exact components installed in it. The PLC firmware, servo drive parameters, communication bus settings, and electrical protection all depend on those components performing exactly as specified.

Replacing a Bosch Rexroth servo drive with a different model from the same product family, for example, may require a complete recommissioning of the drive parameters, a firmware update on the PLC, or modifications to the machine's electrical drawing package. In time-critical breakdown situations, this is not acceptable. The correct replacement — identified by the exact part number — installs and operates within the existing system without requiring additional engineering work.

For safety-rated components, including those used in safety circuits or with SIL (Safety Integrity Level) certification, the use of the exact replacement part is not just operationally important — it is a requirement of the safety system's certification. Any variation from the original specification must be assessed and documented by a qualified engineer before the safety function can be declared operational.

Common Bosch Rexroth Components Replaced

Certain categories of Rexroth component appear most frequently in replacement enquiries, either because they are subject to wear and failure in normal operation, because their product lines have been discontinued, or because they are critical items whose failure results in machine downtime. The table below covers the most common categories.

Sourcing Bosch Rexroth Spare Parts Through K2 Automation

Many Bosch Rexroth product series, particularly from the IndraDrive and EcoDrive families, have been subject to end-of-life announcements and product discontinuation over recent years. This creates a genuine challenge for maintenance and engineering teams responsible for equipment built around these components, because the installed base continues to require support long after the manufacturer stops producing replacement parts.

K2 Automation has built its business specifically around addressing this challenge. With over 12 years of experience in sourcing new, refurbished, and obsolete industrial automation components, and a global network of specialist suppliers, K2 Automation regularly fulfils orders for Rexroth components that are no longer available through authorised distribution channels. The company maintains an inventory of over 300,000 industrial automation references and has experience sourcing across the full Rexroth portfolio, from servo drives and PLCs to hydraulic components and linear motion products.

All Bosch Rexroth parts supplied by K2 Automation carry a minimum 12-month guarantee and are subject to quality checks before dispatch. When placing an order, customers are assigned a dedicated account manager who confirms the part specification, checks compatibility with the known system context, and keeps the customer informed throughout the fulfilment process. For urgent breakdown requirements, the K2 Automation team prioritises immediate sourcing to minimise machine downtime.

FAQs: Bosch Rexroth Part Numbers and Replacement Components

How do I find a Bosch Rexroth part number?

The part number is located on the component nameplate or label, which is typically affixed to the front, side, or rear of the component depending on the product type. For drives, check the front or side panel. For hydraulic components, check the pump or valve body. If the label is missing or unreadable, the part number may be recoverable from the machine's electrical documentation, hydraulic schematic, or the original equipment manufacturer's bill of materials.

Are discontinued Bosch Rexroth parts still available?

Yes, many discontinued Rexroth components are still available through specialist industrial automation suppliers. K2 Automation sources discontinued and obsolete Rexroth parts through a global network of specialist suppliers and holds stock of many hard-to-find items. The availability of any specific part depends on current stock levels globally, but K2 Automation's sourcing experience means that even difficult-to-find components are frequently located.

Why is the exact Rexroth part number important for replacement?

The exact part number ensures the replacement component matches the technical specification of the original in every relevant dimension: drive ratings, communication interface, firmware compatibility, mechanical dimensions, and electrical parameters. Using a different part number, even from the same product family, risks incompatibility with the system firmware, parameter settings, and safety functions. In many cases, using the exact part number avoids the need for engineering rework or recommissioning.

Can K2 Automation supply refurbished Rexroth components?

Yes. K2 Automation supplies new, refurbished, and reconditioned Bosch Rexroth components depending on availability and customer preference. Refurbished components are quality-checked and carry the same minimum 12-month guarantee as new parts. For many discontinued Rexroth components, a quality-checked refurbished unit is the most cost-effective and fastest-available replacement option.

What information should I provide when requesting a Rexroth part?

Provide the full part number from the component label, together with any additional information visible on the nameplate such as the serial number, firmware version (where displayed), and the machine type or year if known. The more specification detail you can provide, the faster K2 Automation can confirm availability and compatibility. For components where the label is damaged, photographs of the component and any available documentation are helpful.