10 models. Haas CNC turning centers feature work envelopes (cutting diameter x length) from 280 x 355 mm on the SL-10 to 650 x 1 120 mm on the SL-40. All models feature reliable brushless axis drives and are available with fully programmable tailstocks. The Haas Servo Bar 300 automatic bar feeder is available for all SL and TL series lathes.