Quick take
Industrial robotics and cobot buying often comes down to a single question: do you need a complete arm or a component to add to an existing station? The four listings here cover both sides. At one end is a SUMIG robotic welding tool priced at USD 349.47, a component meant for tool changing in automated welding. At the other end is a Staubli RX130-B arm at USD 3,410.00, a complete arm assembly. Between them sit an ATI force/torque sensor and a FANUC robot arm. The spread matters because a full-arm purchase carries a different level of commitment than a tooling upgrade.
Listed price comparison
The table orders the four listings from lowest to highest listed price.
| Product | Listed price | Price bar |
|---|---|---|
| SUMIG Robotic Welding Automation Tool Part 0901.2020 NEW | USD 349.47 | |
| ATI Industrial Automation Mini45 - USED & Functional | USD 1,395.00 | |
| FANUC M-16IB/20 INDUSTRIAL ROBOT ARM A05B-1216-B202 2005 ARM ONLY USED | USD 1,800.00 | |
| Staubli Industrial Robot Arm Automation Equipment RX130-B | USD 3,410.00 |
Decision matrix
| Listing | Choose it for | Keep in mind |
|---|---|---|
| ATI Industrial Automation Mini45 | Adding force and torque sensing to an existing robot or research setup | Used condition with cosmetic wear |
| Staubli RX130-B | A complete arm assembly from a French-made automation line | The highest listed price in this set |
| FANUC M-16IB/20 | A 2005 FANUC arm with known payload and axis specs | Arm only - no controller, teach pendant, or cables included |
| SUMIG 0901.2020 | A lower-cost robotic welding tool part in open-box condition | It is a tool component, not a full arm |
Product notes
ATI Industrial Automation Mini45
The Mini45 is not an arm; it is a force/torque sensor that measures force and torque in the X, Y, and Z axes at the same time. That makes it a sensible add-on when your robot needs to detect contact, load, or tool interaction. The unit was pulled from working automation and research equipment, and the description notes cosmetic wear consistent with industrial use, but no cracks or structural damage. The integrated cable is included. Choose this if your project centers on sensing rather than motion; the limitation is that you are buying a used precision sensor, not a new one, and the condition reflects normal service wear.
Staubli Industrial Robot Arm RX130-B
The RX130-B is a French-made arm assembly with a standard construction type and Stäubli robotics controls. If your priority is a complete arm from a single manufacturer, this listing gives you the full assembly rather than a bare component. It is also the highest-priced listing in this comparison, so it fits a budget with room at the top of the spread. The arm is in used condition, which matters for any buyer expecting fresh-equipment appearance. Spend time on your own fit and configuration review before committing.
FANUC M-16IB/20 Industrial Robot Arm
This is a 2005 FANUC arm with the model designation M-16iB/20 and serial number R05476983 listed. The nameplate specs cover a 20 kg payload, six axes, and a weight of 220 kg without controller. The listing is for the arm only, so the controller, teach pendant, and cables are not included. The unit shows paint loss and signs of prior industrial work. If you already have the surrounding controls and just need the mechanical arm, this listing gives you specifics to match against your system; if you expect a turnkey robot cell, the missing controller is a real constraint.
SUMIG Robotic Welding Automation Tool Part 0901.2020
The SUMIG 0901.2020 is an open-box robotic welding tool with a precision machined aluminum body, a black rubber seal, and brass electrical contacts. It is designed to be integrated into robotic welding systems for reliable tool changes, making it a candidate for high-volume production lines. The open-box condition means the outer box shows wear even though the part is listed as new. At the bottom of the listed price range, it is also the least complete item: a tool component, not an arm. Use it as a building block for a welding automation project rather than as a standalone robot.
Final recommendation by use case
If you are outfitting a welding cell from scratch and want to keep your initial spend down, start with the SUMIG welding tool because it sits at the low end of the price spread and gives you a specific automation part for tool changing. If you need a complete six-axis arm and can live with an arm-only package, the FANUC M-16IB/20 matches a 20 kg payload with the understanding that the controller and pendant are separate. If you want a full arm assembly with manufacturer controls, the Staubli RX130-B is the higher-priced route. And if your robot already has motion but lacks force feedback, the ATI Mini45 is the add-on to evaluate. Match the listed configuration to the missing piece in your cell, and the decision becomes simpler.
