# Linear actuators in a cartesian robots

I would like to make a Cartesian robot with maximum speed of up to $1ms^{-1}$ in x/y plane, acceleration $2ms^{-2}$ and accuracy at least 0.1mm. Expected loads: 3kg on Y axis, 4kg on X axis. Expected reliability: 5000 work hours. From what I have seen in 3D printers, belt drive seems not precise enough (too much backlash), while screw drive is rather too slow.

What other types of linear actuators are available? What is used in commercial grade robots, i.e. http://www.janomeie.com/products/desktop_robot/jr-v2000_series/index.html

• @Chuck Well it's not. I'm not asking for a specific models (although examples are welcome). I just want to see answers like "rack and pinion would be good because..." or "belt drive would be ok, you just need to..." etc. – mactro Oct 13 '15 at 11:47
• What is a velocity of $1\,m^{-1}$, or an acceleration of $2\,m^{-2}$? Also, you have to specify loads, and other things that are important for you. These include weight, price, precision/accuracy/backlash, reliability and durability. What, for instance, is "precise enough"? – JJM Driessen Oct 13 '15 at 12:34
• @JJMDriessen these were from edit by other user. I have already fixed it. I've also added some additional info. – mactro Oct 13 '15 at 13:12
• Thanks mactro, you might want to mention the total working envelope you are looking at too. – Mark Booth Oct 13 '15 at 13:14
• @mactro - I see; you're asking for other methods of actuation. You asked for types of "linear actuators", perhaps not realizing that an (implied electric) linear actuator refers to a specific style of actuation. – Chuck Oct 13 '15 at 13:15

† Less than an order of magnitude higher at $2/5ms^{-1}$ velocity & $10/20ms^{-2}$ acceleration for x & y stages respectively.