AII-B4 Parts List | OTC Daihen Robot

OTC Daihen AII-B4 Welding Robot – Complete Parts Breakdown

Recently, many friends have asked me for a detailed exploded view of the OTC AII series robots. Since this series was released years ago, it's not easy to find reliable information. Fortunately, I managed to locate it, and today I'm sharing with you a full breakdown of the OTC AII-B4 welding robot.

Let's start by referring to the exploded view of the robot AII-B4:

1. J1 Axis (Base Axis)

• ① AC Servo Motor – Part No. W-L02149

• ② RV Reducer – Part No. L10725G00

• ③ Grease – Part No. 100-0624

2. J2 Axis

• ④ AC Servo Motor – Part No. W-L02150

• ⑤ RV Reducer – Part No. L10725F00

• ③ Grease – Part No. 100-0624

3. J3 Axis

• ① AC Servo Motor – Part No. W-L02149

• ⑥ RV Reducer – Part No. L10725E00

• ③ Grease – Part No. 100-0624

4. J4 Axis

• ⑦ AC Servo Motor – Part No. W-L02148

• ⑧ Harmonic Reducer – Part No. W-L02034

• ⑨ Grease – Part No. 2670-052

• ⑩ & ⑪ Grease – Part No. 2670-017 (used in multiple sections)

5. J5 Axis

• ⑦ AC Servo Motor – Part No. W-L02148

• ⑫ Harmonic Reducer – Part No. L10725H00

• ⑬ Belt – Part No. W-L02051

• ⑭ Grease – Part No. 2670-015

• ⑨ Grease – Part No. 2670-052

6. J6 Axis

• ⑮ AC Servo Motor – Part No. W-L02147

• ⑯ Harmonic Reducer – Part No. W-L02036

• ⑭ Grease – Part No. 2670-015

• ⑰ Grease – Part No. 2670-053

• ⑩ & ⑪ Grease – Part No. 2670-017

7. Internal Wiring (Cable Assemblies)

• (1) Rear of main body to upper arm – Part No. L10460F00

• (2) J5/J6 shafts (upper arm) – Part No. L10470F00

• (3) J5/J6 shafts (upper arm) – Part No. L10470G00

• (4) J6 axis – Part No. L10470H00

8. Component Units

• J5 Axis Unit – Part No. L10470C00

• J6 Axis Unit – Part No. L10470B00

9. Other Components

• Power Cable (J1 internal) – Part No. L10460R00

• Power Cable (J2 to upper arm) – Part No. L10460S00

• ⑱ Battery – Part No. 100-2147

All parts listed are genuine OTC Daihen, ensuring perfect fit and long‑term reliability for your AII-B4 robot.

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OTC Daihen AII-B4 Welding Robot Parts – All part numbers are based on official OTC documentation.
       * Product images are for reference; actual parts may vary slightly by batch.