How accurate are Linear Shaft Motors?
By eliminating the conversion of rotary to linear motion, a major source of positioning error is removed. This results in high performance and accuracy. While the Linear Shaft Motor itself does not have inherent resolution, position accuracy is ultimately determined by the linear encoder feedback accuracy and the core stuffiness of the Linear Shaft motor. Testing has shown that with encoder resolutions less then 10nm, the Linear Shaft Motor will, at worst case, enable a position accuracy of ±1.2 pulses of encoder resolution. This position accuracy is not affected by the expansion and contraction of the shaft.
