Robots size may vary a lot. The smallest industrial robot has a size of A4 piece of paper, the biggest one has almost five meters of reach.
The video below shows very well a wide variety of sizes. You have to remember that even a small robot can have a large working workspace thanks to an additional rail. You could also place the robot on the pedestal, so he can reach higher.
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Learn more: https://robodk.com/blog/industrial-robot-reach-charts/
