Mounting Hole Misalignment on NXB-MNT-642-003 with R-50 Robot

Description

We are in the process of installing a new R-50 series robot onto the NXB-MNT-642-003 Ceiling Or Wall Robot Mount. We have securely anchored the mount to our reinforced concrete wall as per the installation guide, but we are unable to attach the robot base. The mounting holes on the robot base do not seem to align correctly with the pre-drilled holes on the mount's faceplate. Three of the four holes are close, but the fourth is off by approximately 15mm, making it impossible to insert the M16 mounting bolts. We have double-checked that we are using the correct mount for this robot model. We have tried rotating the robot base 90 degrees, but the hole pattern is rectangular, not square, so this did not work. Our production line commissioning is now on hold until we can get this robot mounted. Please advise if we have a defective mount or if there is a known issue.

Symptoms

• Robot base bolt holes do not align with mount plate holes.
• Unable to secure robot to the mount.
• Installation process is halted.
• Measured offset of approximately 15mm on one mounting hole.

Resolution

The issue was resolved by guiding the customer to use the correct pre-drilled hole pattern on the universal mount. The NXB-MNT-642-003 mount features multiple hole patterns to maintain compatibility with different robot series. The customer was attempting to use the inner hole pattern, which is designed for the C-5 and C-10 series robots. The support analyst directed the customer to the installation manual (Diagram 4-B) to identify the outer set of holes specified for the R-20 and R-50 robot bases. Once the robot was aligned with the correct pattern, all bolts fit correctly, and the installation was completed successfully.

Resolution Steps

1. 1. Confirmed with the customer that the robot model was an R-50 and the mount was SKU NXB-MNT-642-003.
2. 2. Directed the customer to reference Diagram 4-B in the NXB-MNT-642-003 installation manual.
3. 3. Instructed the customer to identify the two distinct, concentric rectangular hole patterns on the mounting plate.
4. 4. Clarified that the inner pattern is for the C-series robots, and the outer pattern is for the R-series robots.
5. 5. Guided the customer to re-position the R-50 robot base to align with the correct outer set of four holes.
6. 6. Advised the customer to insert and hand-tighten all four M16 mounting bolts to ensure proper seating before torquing.
7. 7. Instructed the customer to torque the bolts to the specified 190 Nm in a cross-pattern to ensure even load distribution.
8. 8. Customer confirmed the robot was successfully mounted and the case was closed.