The KUKA KRC4 controller is widely used across automotive, electronics, and industrial automation applications. As the brain of the robot, the KRC4 controller houses multiple critical components that ensure reliable motion, precise positioning, and safe operation.
This page provides a structured list of KRC4 spare parts, including CPU boards, power modules, servo drives(KPP/KSP), I/O modules, and more, enabling maintenance engineers and purchasing teams to quickly identify and source the right replacement components.
Why the KRC4 Spare Parts Matter
KRC4 spare parts are essential for:
- Maintaining robot uptime in critical production lines.
- Preventing production delays caused by controller failures.
- Ensuring safety compliance with official KUKA components.
- Reducing repair costs by replacing only faulty components instead of the entire system.
Frequent replacement parts include servo drives, main boards, power modules, teach pendant cables, and I/O boards.
Major KRC4 Controller Spare Parts Categories
1. Main Control Boards (CPU & Logic)
Responsible for robot program execution, KUKA System Software (KSS), and motion control.
Common KRC4 main board part numbers:
| Part Number | Description | Function |
|---|---|---|
| 00-108-720 | KRC4 CPU Board | Central processing unit (Standard). |
| 00-108-716 | KRC4 CPU Board | High-performance processing unit. |
| 00-122-050 | KRC4 Logic Board | System logic and communication. |
- Symptoms of failure: Robot not booting, program execution errors, system freezes.
2. Servo Drives & Amplifiers
Unlike legacy systems, the KRC4 uses a modular KPP (KUKA Power Pack) and KSP (KUKA Servo Pack)architecture to control robot axes.
| Part Number | Description | Function |
|---|---|---|
| 00-155-234 | KPP | KUKA Power Pack (Input/Axis 1). |
| 00-155-231 | KSP 600-006 | Servo Pack (Small). |
| 00-155-232 | KSP 600-015 | Servo Pack (Medium). |
| 00-155-233 | KSP 600-025 | Servo Pack (Large). |
- Common failures: Servo alarms on specific axes, overheating, or DC link faults.
3. Power Supply Units (PSU)
Power boards provide regulated voltage to the controller and servo systems.
Main KRC4 power modules:
| Part Number | Description | Function |
|---|---|---|
| 00-120-750 | KRC4 Main PSU | Regulated 24V / 48V power supply. |
| 00-120-751 | KRC4 Backup PSU | Backup power module for safety logic. |
Signs of failure: Controller fails to start, voltage or temperature alarms.
4. I/O Boards & Communication Modules
Responsible for external devices, sensors, and network integration:
| Part Number | Description | Function |
|---|---|---|
| 00-140-560 | Digital I/O Board | Standard KRC4 I/O handling. |
| 00-140-570 | Fieldbus Card | PROFINET/EtherNet/IP communication. |
- Symptoms: Loss of sensor signals, network communication failure.
5. Teach Pendant & Accessories
The KUKA KCP (KUKA Control Panel) and its accessories are frequently replaced.
Key KRC4 teach pendant parts:
| Part Number | Description |
|---|---|
| 00-168-334 | KUKA KCP4 Teach Pendant Refurbished |
| 00-174-902 | KUKA KCP4 Pendant Cable 10m |
| 00-320-104 | KRC4 Teach Pendant Holder / Mount |
Common issues:
- LCD or touch panel failure
- Keypad malfunction
- Cable wear or connector damage
6. Cooling Fans & Filters
To ensure optimal operation and prevent overheating:
| Part Number | Description |
|---|---|
| 00-122-500 | KRC4 Controller Cabinet Cooling Fan |
| 00-122-510 | KRC4 Air Filter Replacement |
Regular maintenance of fans and filters extends controller life and prevents servo alarms.
FAQ - KRC4 Spare Parts
Q: Can I use KRC2 parts on a KRC4 controller?
A: No. KRC4 controllers use a new architecture and require KRC4-specific boards, drives, and accessories.
Q: Which KRC4 parts are most frequently replaced?
A: Servo drives (KSD modules), CPU boards, power supplies, and pendant cables are replaced most often.
Q: Are refurbished KRC4 boards reliable?
A: Yes, when professionally tested, calibrated, and certified. Refurbished components are widely used to reduce cost and minimize downtime.
Related KRC4 Spare Parts & Maintenance Pages
- KUKA KCP (Teach Pendant) & Cable Index
- Robot Servo Drives Index
- Robot Communication Boards Index
- Robot Power Supply Units Index
- Robot Controller Repair Parts Index
Reference Notes
This section provides supplementary reference links related to KUKA KRC4 system architecture, modern hardware series classification, and component-level identification structures.
Referenced materials are intended to support index navigation and part number orientation within the KRC4 platform only. They are informational in nature and do not replace official KUKA technical documentation, system manuals, or KUKA System Software (KSS) release notes.