In 1999 Haas introduced the new Haas SL Series of lathes. These Haas CNC lathes included the Haas SL30, which was a chucker, the Haas SL30T, which included a tailstock, and the Haas SL30L, which was a long bed version of the machine. Each of these units was available to include a milling option that worked in cohesion with a full C axis spindle rotation. The standard Haas SL-30 offered 30" swing with 14.5" over the cross slide and a 10" chuck. This standard arrangement offered a 3.5" spindle bore with a maximum bar capacity of 3.0" when used with the standard hydraulic chuck. The standard Haas SL-30T offered 39" between centers with 34" maximum cut length when used with a tailstock, but the optional 30L offered extended 65" between centers with 58" maximum cutting length. The optional milling feature was offered with VDI 40 driven tools for both axial and radial milling capability. These tools ran at up to 3,000 rpm driven by a 5 HP mill drive.
Some additional options that were offered included the 4.62" spindle bore option which used a A2-8" spindle nose and 40 HP main motor upgrade. This allowed for 4" bar capacity with a hydraulic chuck. There were also 3 different turret options available for the machines. This included the bolt-on design, the VDI design, and the VB hybrid design. Each had their own advantages. The standard SL30 Haas CNC lathe offered a belt driven spindle but was offered with a 2 speed gearbox option. The SL30L, and SL30 big bore offered the 2 speed gearbox as a standard feature. The forementioned tailstock, and big bore features were optional as was a steady rest, tool presetter, different chuck sizes, and chip removal options. The machine could also be set up with a bar feed and parts catcher.
Some of the new advantages that came with the SL series when it replaced Haas' HL series in 1999 were a newly designed massive headstock castings with symmetric ribs for rigidity and stability; all new larger tailstock castings with 2 piece heads for easy re-alignment; embedded chip trays and increased volume roll-out coolant tanks for improved sealing and chip removal; and a new double wal door riding on precision bearings for smooth operation.