FANUC R-1000iA/100F vs Yaskawa SP100B: Spot Welding Robot Comparison
Updated: 12 hours ago
IN A NUTSHELL
🔎 THE KEY DIFFERENCE Both are compared at 100 kg. Yaskawa Motoman SP100B has the longer stated reach, which may help reach separated fixtures; it does not guarantee access at every tool angle. FANUC R-1000iA/100F has 6 axes, compared with 7 axes for Yaskawa Motoman SP100B. |
→ CONSIDER FANUC R-1000iA/100F Consider it when its stated load and reach already cover your task and its controls fit your equipment. This article compares 100 kg with a published reach of 2230 mm; include the gripper and part in the load. |
→ CONSIDER Yaskawa Motoman SP100B Consider it when extra reach is useful while the compared load capacity is the same. This article compares 100 kg with a published reach of 2236 mm; include the gripper and part in the load. |
💡 THE TAKEAWAY Check the required tool angles and approach path: different axis counts change movement options. Choose only after both suppliers demonstrate the loaded task and quote the same complete installation. |
The FANUC R-1000iA/100F and the Yaskawa Motoman SP100B both carry 100 kg over about 2.23 m and both are used for spot welding. The SP100B has seven axes and an integrated spot harness, and is listed about 41% lower.
Quick verdict. The Yaskawa SP100B is the better value for spot welding in dense body shops, with seven axes and a listed price $36,000 lower. The FANUC R-1000iA/100F is the better choice when published ±0.03 mm repeatability and FANUC integration matter.
R-1000iA/100F and SP100B at a glance

The FANUC R-1000iA/100F carries 100 kg over 2230 mm with six axes, repeats to ±0.03 mm, weighs 665 kg and runs on the R-30iB Plus or R-30iB Mate Plus controller.
The Yaskawa Motoman SP100B carries 100 kg over 2236 mm with seven axes and runs on the YRC1000 controller. Yaskawa does not list its repeatability or weight on the product page.
Main specification comparison
Specification | FANUC R-1000iA/100F | Yaskawa Motoman SP100B |
Brand | FANUC | Yaskawa Motoman |
Listed price | $88,000 | $52,000 |
Payload | 100 kg | 100 kg |
Reach | 2230 mm | 2236 mm |
Repeatability | ±0.03 mm | Not specified |
Axes | 6 | 7 |
Arm weight | 665 kg | Not specified |
Controller | R-30iB Plus (A- or B-cabinet) or R-30iB Mate Plus | YRC1000 |
Price comparison
FANUC R-1000iA/100F: listed from $88,000
Yaskawa SP100B: listed from $52,000
Difference: $36,000
The SP100B costs roughly 41% less
Seven axes against six

Yaskawa describes the SP100B as a highly flexible seven-axis robot. The extra axis helps a spot gun reach around fixtures and into car bodies, and lets robots work closer together. The R-1000iA/100F has six axes and mounts on the floor or upside-down.
Spot welding design
Yaskawa's SP series uses an integrated spot harness and fast axis acceleration to cut non-welding time. FANUC lists the R-1000iA/100F for handling, assembly, sealing and spot welding, with ±0.03 mm repeatability.
Installation and controllers

The R-1000iA/100F weighs 665 kg and runs on the R-30iB Plus or Mate Plus. The SP100B runs on the YRC1000. Yaskawa does not list the SP100B's repeatability and weight on its product page, so confirm them before planning.
Best applications for the R-1000iA/100F
Spot welding in FANUC lines
Sealing
Inverted heavy handling
Best applications for the Yaskawa SP100B

Dense body-shop spot welding
Welding around fixtures
High-density robot lines
R-1000iA/100F advantages
±0.03 mm published repeatability
Inverted mounting
R-1000iA/100F limitations
About $36,000 higher listed price
Yaskawa SP100B advantages
Seven axes
Integrated spot harness
About 41% lower listed price
Yaskawa SP100B limitations
Repeatability and weight not listed by Yaskawa
Final verdict
Choose the Yaskawa SP100B for dense spot welding. Choose the FANUC R-1000iA/100F for FANUC lines and documented precision.
Sources and further reading
Frequently asked questions
Which is cheaper, the FANUC R-1000iA/100F or the Yaskawa SP100B?
The SP100B is listed from $52,000 and the R-1000iA/100F from $88,000, a difference of $36,000.
How many axes do they have?
The R-1000iA/100F has six axes; the SP100B seven.
Do both carry 100 kg?
Yes.
Can both spot weld?
Yes.
What is the SP100B repeatability?
Yaskawa does not list it on the product page.
Which robot should I buy?
Choose the SP100B for dense spot welding. Choose the R-1000iA/100F for FANUC lines.



