ST-20Y

8.3k

CHUCK SIZE

2.5k

BAR CAPACITY

RPM

20 hp

POWER

CNC Lathe w/Y Axis; 11.75″ x 22.5″ (298 x 572 mm) max capacity, 2.5″ (63.5 mm) bar, 21″ (533 mm) swing, ±2.00″ (±50.8 mm) Y-axis travel, 20 hp (14.9 kW) vector drive, 4,000 rpm, A2-6 spindle, 8.3″ (210 mm) chuck, 12-station BMT-65 turret, high-torque live tooling w/C axis, 15″ colour LCD monitor, memory lock keyswitch, spindle orientation, USB port and rigid tapping. Standard toolholder kit included with Hybrid turret.

ST-20Y - Compare to

ST-20Y
Swing Diameter	S.A.E.	METRIC
Max Part Swing	21 "	533 mm
Capacities	S.A.E.	METRIC
Chuck Size	8.3 "	210 mm
Max Cutting Diameter (varies with turret)	12.0 "	305 mm
Max Cutting Length (without workholding)	21 "	533 mm
Bar Capacity	2.5 "	63.5 mm
TRAVELS & FEEDRATES	S.A.E.	METRIC
X Axis	8.4 "	213 mm
Y Axis	±2.00 "	±50.8 mm
Z Axis	22.5 "	572 mm
Rapids on X	472 in/min	12 m/min
Rapids on Y	472 in/min	12 m/min
Rapids on Z	945 in/min	24.0 m/min
Max Thrust X	4100 lb	18238 N
Max Thrust Y	2300 lb	10231 N
Max Thrust Z	5100 lb	22686 N
SPINDLE	S.A.E.	METRIC
Max Rating	20 hp	14.9 kW
Max Speed	4000 rpm	4000 rpm
Max Torque	150 ft-lb @ 500 rpm	203 Nm @ 500 rpm
Spindle Nose	A2-6	A2-6
Spindle Bore ø	3.50 "	88.9 mm
Main Spindle C Axis	S.A.E.	METRIC
Max Rating	5 hp	3.7 kW
Positioning (±)	0.01 °	0.01 °
Brake Clamp Force	1000 lb	4448 N
Brake Diameter	14.4 "	366 mm
Control Type	Interpolated Motion and Control	Interpolated Motion and Control
Turret	S.A.E.	METRIC
Number of Tools	12 Stations	12 Stations
Turret Type	BMT-65	BMT-65
Boring Bar Rear Clearance (from back of turret )	4.0 "	102 mm
Live Tooling	S.A.E.	METRIC
Max Speed	6000 rpm	6000 rpm
Tooling	BMT-65	BMT-65
GENERALS	S.A.E.	METRIC
Air Required	4 scfm, 100 psi	113 L/min, 6.9 bar
Coolant Capacity	55 gal	208 L

Dimensions

N/A

Shipping Dimensions

Brochure

Manual

Rotary Table Fit Chart

See our lathes in action

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.co.uk/lathes/st-10y/

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. The unit pushes back out of the way for access to the spindle bore, pushrod changes require no tools, spindle liner storage is provided for easy access, and best of all the machine control has a dedicated Bar Feeder page so that programming is simple and intuitive.

ST-20Y Y-Axis Lathe Cutting Demo

Watch our ST-20Y lathe 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? Not only will your shop be more productive and experience reduced setup times, but the BMT65 Turret and Live Tooling also provide increased cutting performance, longer tool life, and better tool clearance, when compared to older Haas lathe models. 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.