The Motoman HP6R is the shelf mount variation. The advantage to a shelf-mount robot is the ability to reach under and behind the robot body, greatly increasing the work area without increasing the robot size. The HP6R NX100 offers the same benefits as the standard Motoman HP6, but with a larger work envelope.
The used Motoman HP6R is also available at RobotWorx. All used HP6R robots have undergone RobotWorx' intense refurbishment process and include the RobotWorx Value Package. You will not be disappointed by the higher throughput and product quality after purchasing a new or used Motoman HP6R.