SCARA 3d printers are not so common, but there is a new machine under development by Sean (a.k.a. CLaNZeR) from UK based CNC Design Limited. The prototype is currently in version MK3 with physical size of 25 x 25 x 40 cm and is expected to reach a theoretical resolution of 0.007 mm.
Mk3 prototype forum:
Here is the SCARA configuration in test phase: