A quad stack NEMA size 23 brushless 1.8° stepping motor from Intelligent Motion Systems delivers speed-torque comparable to a single stack NEMA 34, but with a footprint 1/3 smaller (29 vs. 46 in3 / 187 vs. 297cm3). The MDrive23Plus with quad stack motor is capable of full (256 x 200) microstepping with a +12 VDC to +60 VDC integrated driver. Three (3) versions are available: Microstepping with step and direction input, Motion Control with intelligent programmable controller, and Speed Control with velocity controller. From $295.
Intelligent Motion Systems
(860) 295-6102, www.imshome.com