Motion controller
Bosch Rexroth ctrlX CORE motion controller
App-based Linux control platform (ctrlX OS) with EtherCAT master, from a quad-core ARM ctrlX CORE X3 to an Intel Core i7 ctrlX COREplus X7 with 16 GB RAM, programmable in IEC 61131 or high-level languages via apps.
Need this part, a replacement or a complete package? Our experienced UK engineering team helps you select, source and obtain the right products, with pricing, delivery coordination and after-sales support.
Pricing and availability
Get pricing, sourcing and replacement support
Need Bosch Rexroth parts, a replacement or a suitable alternative? Send us a part number, or tell us what the machine needs to do. Our UK engineers will come back with the right product, pricing, lead time and delivery, whether that is the original part, a checked alternative or a complete axis.
- Original parts or a checked alternative
- Pricing, lead time and delivery in one reply
- Components, complete axes and ongoing support
No obligation. Add what you know and an engineer will help with the rest. Prefer to configure it? Build a specification.
Spec builder
Specify what you need instead of ctrlX CORE
Select every part you need and answer the questions an applications engineer would ask. Our engineers use your specification to come back with the right products, pricing and lead times. You see your summary before we ask for any details.
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- 1Products
- 2Performance
- 3Environment
- 4Volumes
- 5Your spec
What are you specifying?
Select everything you need. A motor, drive and gearbox can be specified together as one axis.
Key specifications
| Fieldbus | EtherCAT master (1x GbE on X3, 2x GbE on X5/X7); TSN endpoints on X5/X7 |
|---|---|
| Cooling | fanless (X3, X5 up to 50 °C); active (X7) |
| Variants | CORE X3, COREplus X3, COREplus X5, COREplus X7 |
| Cpu | 64-bit quad-core ARM (X3); Intel Atom quad-core (X5); Intel Core i7 (X7) |
| Ram | 2 / 2 / 8 / 16 GB |
| Os | ctrlX OS (Ubuntu Core based) |
| Programming | apps for IEC 61131, high-level languages, EtherCAT and visualisation |
Summarised in our own words from Robert Bosch GmbH's published data; series maxima, individual models vary. Last checked 2026-10-30. Source 1 · Source 2
Notes on this data
No axis count or cycle time is published on the pages read.
Specify Motion is not affiliated with Robert Bosch GmbH. Bosch Rexroth and ctrlX CORE are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Bosch Rexroth ctrlX CORE replacement and alternative options
Use these supply-network options as a starting point for an engineering check. We can also help source the original Bosch Rexroth part. Published series figures do not establish an exact-model or drop-in replacement: confirm ratings, fit, interfaces and approvals for your application.
Slim 54 mm EtherCAT motion controller programmed in CODESYS, running up to 32 synchronised axes on a 1 ms cycle with RP20 I/O expansion.
CODESYS-based PLC/motion controller with EtherCAT for 8, 16 or 32 axes plus 6 local pulse axes, dual-core SOC+FPGA and 32-module R2 I/O expansion.
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Typical applications
What a motion controller is
A motion controller plans and coordinates movement for one or more axes, sending position, velocity or torque commands to servo or stepper drives. It generates trajectories with defined acceleration and jerk, synchronises axes for interpolation, electronic gearing and camming, and handles homing, limits and registration inputs. Commands reach drives over pulse, analogue or, most commonly now, EtherCAT and other real-time networks. Many controllers also include PLC functions to IEC 61131-3, combining logic and motion.
When engineers choose a motion controller
Choose a dedicated motion controller when a machine needs coordinated multi-axis motion beyond basic point-to-point moves, such as robots, gantries, packaging and CNC. It gives deterministic timing and motion libraries. The trade-offs are cost, programming effort and ecosystem lock-in. For simple machines with a few independent axes, a PLC with motion function blocks or intelligent drives with stored moves may be enough.
How to specify the Bosch Rexroth ctrlX CORE
Send these with your enquiry and an engineer can confirm the right ctrlX CORE variant or an equivalent:
- Number of axes and drives
- Network and cycle time (ms)
- Motion functions: interpolation, camming, robotics
- Programming environment and languages
- I/O and expansion
- HMI and connectivity
- Safety integration
Common mistakes to avoid
- Choosing a controller that does not support the drives' network
- Underestimating cycle time needs for many axes
- Ignoring programming tools and skills in the team
- Not planning for future axis count
Bosch Rexroth ctrlX CORE: frequently asked questions
Can you help replace Bosch Rexroth ctrlX CORE or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including supply-network options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Bosch Rexroth ctrlX CORE?
App-based Linux control platform (ctrlX OS) with EtherCAT master, from a quad-core ARM ctrlX CORE X3 to an Intel Core i7 ctrlX COREplus X7 with 16 GB RAM, programmable in IEC 61131 or high-level languages via apps. It is made by Robert Bosch GmbH; Specify Motion can help source it or propose an equivalent.
Who makes the Bosch Rexroth ctrlX CORE?
The Bosch Rexroth ctrlX CORE is made by Bosch Rexroth (Robert Bosch GmbH) and is listed here for engineers comparing options. Specify Motion is not affiliated with Robert Bosch GmbH; brand names are used only to identify the product.
Is there an alternative to the Bosch Rexroth ctrlX CORE?
We can assess suitable replacement options. On published figures, Kinco AK (AK8 / AK840) and Leadshine MC500 (MC508CS / MC516CS / MC532CS) are options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
What is the difference between a motion controller and a PLC?
A PLC handles machine logic, sequencing and I/O. A motion controller specialises in trajectory planning and coordinating axes. Many modern controllers combine both, running PLC logic and motion libraries on one CPU. Choose based on axis count, motion complexity and timing requirements.
Why is EtherCAT common for motion control?
EtherCAT offers short cycle times, precise synchronisation using distributed clocks and simple cabling, which suit coordinated multi-axis motion. Many drives and I/O devices support it. Other real-time networks such as PROFINET IRT and Sercos are also used, so check what the drives and controller support.
Further reading: How to select a motion controller or plc · Controllers and PLCs
Other motion controller series
Engineer support
Let our experienced engineers do the hard work for you
Tell us how you use the Bosch Rexroth ctrlX CORE: the load, speed, duty and environment. Our engineers will confirm whether it is still the right part, find it for you, or propose an alternative that fits better.
- Reviewed by an engineer, not an autoresponder
- Like-for-like and better-fit alternatives
- Standard, modified and custom options
Prefer to configure it? Use the spec builder.
How it works
From enquiry to delivery
Send a part number or describe the application. Our engineers take it from there: the right product, a clear quotation, and delivery and support arranged.
- 01Tell us what you needSend a part number, or configure the application, quantities and timing.
- 02An engineer reviews itWe check the specification and find the original part, a checked equivalent or a complete axis.
- 03Receive your quotationProducts, pricing, lead time and compatibility notes in one reply.
- 04Order and deliveryWhen you are happy, the order is placed and delivery and after-sales support are arranged.