Choosing an industrial robot arm for a work cell usually comes down to axis count, reach, payload, and how much control hardware is included in the listing. The four arms in this industrial robotics cobots lineup cover very different ground, from a compact horizontal SCARA to longer-reach articulated models. None are interchangeable, so the right pick depends on whether your next job needs horizontal part movement, six-axis flexibility, a long reach, or compatibility with an older control platform.
Quick take
If your next project needs high payload on a horizontal arm, the Mitsubishi Melfa RH-20SDH8535 SCARA is the direct candidate. If a controller package matters more than raw reach, the NACHi MZ07 is the direct candidate. If a long reach is the benchmark, the Staubli TX2-60L is the standout. If you work with older control environments, the Fanuc S-10-RS-7RHUC2 is the legacy pick.
Listed price comparison
| Robot arm | Listed price | Price bar |
|---|---|---|
| Mitsubishi Melfa RH-20SDH8535 SCARA | USD 1,800.00 | |
| NACHi MZ07 6-Axis Industrial Robot Arm w/ TCFD Controller | USD 2,000.00 | |
| Staubli TX2-60L 6-Axis Articulated Industrial Robot Arm | USD 7,999.99 | |
| Fanuc Robotics Industrial Robot Arm & Controller Model S-10-RS-7RHUC2 | USD 1,999.99 |
Decision matrix
| Buyer profile | Matching arm |
|---|---|
| Horizontal assembly or material movement | Mitsubishi Melfa RH-20SDH8535 SCARA |
| Six-axis flexibility with a bundled control package | NACHi MZ07 with TCFD Controller |
| Long reach and confirmed condition | Staubli TX2-60L |
| Legacy control generations | Fanuc S-10-RS-7RHUC2 |
Product notes
Mitsubishi Melfa RH-20SDH8535 SCARA
Start with this Mitsubishi if your process needs to move heavy parts in a horizontal plane. It is a 4-axis SCARA with a listed 20 kg payload and an 850 mm arm reach, giving it the strongest load rating among these four listings. The trade-off is the condition detail: the external connecting cables were cut during decommissioning, while the internal wiring is described as intact. That makes it a realistic candidate for an integrator who can terminate or replace external cabling, but not a drop-in unit for a line that expects untouched wiring.
NACHi MZ07 6-Axis Industrial Robot Arm
This is the one to compare if six-axis motion and a controller in the same listing matter. The TCFD controller is included, so the control side is already identified before you purchase. The limitation is in the condition note: the tip sensor is partially detached, which is visible in the second photo. That gives an integrator a clear repair or replacement task before the arm goes into production. It pairs six-axis flexibility with a matched controller, which makes it a direct fit for a cell that needs both.
Staubli TX2-60L 6-Axis Articulated Industrial Robot Arm
If reach drives the decision, this Staubli is the one to measure. Its listed 920 mm reach is the longest of the four, and the 4.5 kg payload is stated in the product name. It is also listed as tested and working, which is the clearest condition statement in this group. The limitation is that only the items shown in the included photos are part of the sale, so the package is limited to what is visible in the images. For a cell that needs a longer articulated reach and can rely on that tested-and-working status, this is the strongest match.
Fanuc S-10-RS-7RHUC2
This 1994 Fanuc system pairs a six-axis arm with R-J series control architecture, which fits facilities that already run legacy automation. The design is heavy-duty and straightforward, making it a candidate for material handling, welding, or palletizing work. The limitation is the generation: a 1994 control platform expects a maintenance team comfortable with older electronics and legacy spare parts. It provides the same axis flexibility as the other articulated arms here, but within a control generation that is clearly older.
Final recommendation by use case
- For a horizontal assembly or material-handling profile, the Mitsubishi Melfa RH-20SDH8535 SCARA at USD 1,800.00 is the pick, with cable retermination as the integration caveat.
- For a six-axis workload with a control package already in the listing, the NACHi MZ07 at USD 2,000.00 is the direct match, with tip-sensor repair as the caveat.
- For an articulated arm with tested-and-working status, the Staubli TX2-60L at USD 7,999.99 is the highest listed price in the set and should be selected only when that condition is essential.
- For a legacy automation environment, the 1994 Fanuc S-10-RS-7RHUC2 at USD 1,999.99 gives you the near-$2,000 option with older control architecture.
