Elevate Your Production and Learn More About KUKA Robot Arms

KUKA Robotics

Updated August 2019: You can purchase KUKA products, including KUKA arms, directly from our website.

MRO Electric and Supply distributes a variety of new and refurbished KUKA Robot arms.

We repaint and rebuild all of our refurbished KUKA arms, as well as purge and replace the grease according to the manufacturer’s specifications.

KUKA Robot Arm Models

We supply KUKA arms and wrists from a number of robots. We have included some popular KUKA robot models in our inventory below:

  • KR30
  • KR60
  • KR90
  • KR150
  • KR180
  • KR360
  • KR500
  • Any Many More!

About KUKA Robotic Arms

Most KUKA robotic arms are made up of 4-6 joints, and can be used for many different applications such as welding, material handling, material removal, and more. Because KUKA arms are so large, they are typically used to lift heavy payloads and are sometimes run by hydraulic and pneumatic methods. Most KUKA robot arms are made from aluminum and built from the base up, ending with the wrist and whichever end effect is needed to help the arm perform its given application.

KUKA was one of the first companies to use aluminum in robot arm design, which makes KUKA arm manipulators one of the fastest and lightest on the market. They also introduced a horizontal balancing spring on axis 2 before the other robot manufacturers, a design that has now been widely adopted.

Even if you are new to programming, you can explore different intuitive programming options to find out what will work best for you. KUKA robotic arms can be programmed in multiple ways including using KUKA’s own robot language, through hand guiding, a handheld probe, graphical offline programming and more.

MRO Electric and Supply has a warehouse full of many types of KUKA arms and wrists. Give us a call today if you need a replacement and we can usually ship you one same-day! You can also email sales@mroelectric.com for a quote.

KUKA Controllers lineup

KUKA Error Codes

 KUKA robotics offers a broad range of robotics controllers and other robotics parts for a variety of industries including CNC machining, surface processing, loading usage, and much more. One common challenge with operating robotics controllers is understanding what the error codes mean, that they display when they encounter an issue. Listed below are common KUKA error messages that you may encounter while troubleshooting issues with KUKA controllers. These codes are applicable to all KUKA controllers, including the KRC1, KRC2, KRC3, and the KRC4.

Common KUKA KRC1, KRC2, KRC3, and KRC4 Error Codes

Error Code 14 – SOFTPLC: @P1@

Error Code 284 – Accu–voltage at <kps number> below <voltage level> during last buffering

  • Cause
    • The accu voltage was too low at the last switch off to buffer the
    • The accu is not charged correctly anymore.
    • The accu is too old or broken.
  • Effect
    • Eventually loss of reference.
    • Cold boot.
    • Active commands inhibited
  • Remedy
    • Exchange accu.

Error Code 310 – Safety Circuit for drives not ready

  • Cause
    • Safety circuit is telling drives not to move.
    • Faulty X11
    • Faulty ESC board
    • Faulty KPS 600
  • Remedy
    • Check ESC monitor and other messages to narrow down the root cause with the safety circuit
    • Replace faulty components

Error Code 364 – Unknown operation mode

  • Possible Cause
    • Faulty KPS 600 Drive
  • Remedy
    • Replace KPS 600

Error Code 420 – Local protective stop (QE)

    • Possible Cause
      • Faulty KPS600 Drive
    • Remedy
      • Replace KPS600

Error Code 1033 – ERROR ON READING, DRIVER: ** **

Error Code 1034 – ERROR ON WRITING, DRIVER: ** **


  • Cause
    • The calculated gear torque is larger than the maximum permissible gear torque.
  • Monitor
    • Cyclic in interpolation cycle.
  • Effect
    • Motion and program are stopped.
  • Remedy
    • Reteach points.



  • Cause
    • A message which causes the active commands to be inhibited has been set.
  • Monitor
    • In command processing.
  • Effect
    • Command is not executed.
  • Remedy
    • Acknowledge active messages in the message window.



Error Code 6502 – Error during reading INI file init/iosys.ini 1

  • Remedy
    • Check iosys.ini file
    • Ensure correct DeviceNET driver is installed
    • Check data cable between robot / cabinet

Error Code 10053

  • Remedy
    • Check fan to ensure it isn’t vibrating. This could be causing the Mfc card to move into the motherboard’s slot.

To find more info about KUKA error codes, view KUKA’s manual below.

View the KUKA Manual

MRO Electric carries replacement KUKA Robotics parts such as teach pendants, drives, motors, and more. To request a quote, please call 800-691-8511 or email sales@mroelectric.com.

Troubleshooting error codes on your KUKA controller?

We can help you resolve issues with your KUKA controllers. Whether you’re looking to repair your old controller or purchase a new one, we’re dedicated to keeping your automation systems running at their best!

KUKA teach pendant

KUKA Teach Pendants

MRO Electric and Supply distributes a variety of KUKA Teach Pendants for KRC1, KRC2, and KRC3 controls. We also can supply the new KRC4 smartPAD. The smartPAD pendant  is the latest type of KUKA teach pendant, designed to allow users to perform even the most complex operating tasks with ease – even those with little experience.  It features an 8.4″ display size with a industrial touch screen.

KUKA smartPAD Teach Pendant

The ergonomic design of the KUKA smartPAD creates a pendant with reduced weight and an anatomically comfortable operation. It can be used to operate all KUKA robots that have a KR C4 controller. Its 6D mouse allows for movement and reorientation of the robot on all axes.

All smartPADs are programmed using the KRL – KUKA programming language. This easy to learn robotics language is very intuitive, and can be used to create customized robotic motions with ease. You can also synchronize your programming with up to 6 KUKA robots. The other major benefit of the smartPAD teach pendant is that  it can be hot swapped at any time from a KR C4 controller – just simply plug it in and use.

Legacy KUKA Teach Pendants

MRO Electric also distributes a number of legacy KUKA teach pendants. We recognize that there are still a variety of older KUKA controllers still in use today. Rather than having to upgrade your control system when one of your pendants fail, we can ship you a replacement pendant to minimize any downtime.

If for some reason our stock is depleted, we can usually repair your KUKA pendant in as little as 3-5 days. Visit our main KUKA product page to see all the KUKA teach pendants that we can supply or repair.

For more information or to request a quote on a replacement pendant or panel, please call 800-691-8511 or email sales@mroelectric.com.