Discrepancy in URDF from OEM

[jsubramo]

Hello,

I see the mass values to be different for the joints in the urdf from ROS-Industrial when compared to one provided by Universal Robots,-

Noetic - https://github.com/ros-industrial/universal_robot/blob/noetic-devel/ur_description/config/ur5e/physical_parameters.yaml
Kinetic - https://github.com/fmauch/universal_robot/blob/kinetic-devel/ur_description/urdf/ur5.urdf.xacro

UR - https://www.universal-robots.com/articles/ur/application-installation/dh-parameters-for-calculations-of-kinematics-and-dynamics/

Comparison

Can you let me know why this is observed,

Thanks,