40 hp


The Best-Value large capacity CNC lathes in the Industry

Rigid, high-performance large capacity CNC lathes with a wide selection of available options for every workshop.

The Haas ST Series large capacity CNC lathes were designed from the ground up to provide setup flexibility, extreme rigidity, and high thermal stability.

The ST-40 is a high-performance CNC turning centre with a generous work envelope. This machine offers the best performance for the money – the best value – in its class.

  • 2-speed gearbox
  • 12-station bolt-on turret
  • Powerful spindle and hydraulic chucking system
  • Made in the USA

For double the cutting length, the long bed ST-40L is available.

CNC Lathe; 25.5″ x 44″ (648 x 1118 mm) max capacity, 4.0″ (102 mm) bar, 34.5″ (876 mm) swing, 40 hp (30 kW) vector drive, 2400 rpm, 2-speed gearbox, A2-8 spindle, 15″ (381 mm) chuck, 12-station bolt-on turret, 15″ colour LCD monitor, memory lock keyswitch, USB port, colour remote jog handle and rigid tapping. Standard toolholder kit included with BOT or Hybrid turret.


The ST-40 CNC Large Capacity CNC Lathe at Work

Need to machine some tapered oilfield threads on some pipe? Or drill a 4″ hole in some stainless or alloy steel? No problem, the ST-40 has the power and rigidity to tackle some serious parts. This demo features OD turning with a 0.6″ DOC at 770 SFM and 0.0216″/rev in 4140 alloy steel.

Link to video


ST Series Lathe Work Envelope Comparison

Check out this overview of Haas’ range of ST Series turning centres. There should be a lathe in here that meets the needs of your shop whether your parts are large or small.

Link to video


Haas ST-10Y and Parts Catcher Demo

Check out Haas’ ST-10Y compact turning centre doing some Y-axis cutting, and using our productivity-boosting Parts Catcher option.

More info here:

Haas Bar Feeder - Haas Option Spotlight

If you want more productivity from your Haas lathe, consider adding a Haas Bar Feeder to your shop. Designed for easy integration with your lathe, the Bar Feeder features a host of features to make operation simple. 

ST-20Y Y-Axis Lathe Cutting Demo

Watch our ST-20Y Y-axis turning centre with the BMT65 live tooled turret in action.

The BMT65 Turret and Live Tooling for Haas Lathes

Why move your turned parts to a mill for secondary operations when you can machine them complete on a Haas lathe with the BMT65 Turret and Live Tooling? 

The BMT65 Turret and Live Tooling are standard on Haas Y-Axis lathes (ST-20Y through ST-35Y), and optional on non Y-axis models.