ST-20LY

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Model	Serial#	Options

AVAILABLE OPTIONS

TECHNICAL DOCUMENTS

VIDEOS

HAAS LATHE WORK ENVELOPE COMPARISON CHART

CHUCK SIZE | BAR CAPACITY | WORK ENVELOPE | AUTOMATION OPTIONS

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Videos

Lathe Drilling: Everything You Need to Know

Cut Cycle Times and Position Your Turret Using G53

The Haas BMT65 Turret

Setting Up Live Tools

STANDARD MODEL

ST-20Y

Y-Axis CNC Lathe with 11.75" x 22.5" max capacity and 2.5" bar capacity

8.3" Chuck Size
2.5" Bar Capacity
4k RPM
20 hp Power

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LARGER BAR CAPACITY & CHUCK, MORE POWER

ST-25LY

Y-Axis CNC Lathe with 11.75" x 42.5" max capacity and 3.0" bar capacity

10" Chuck Size
3.0" Bar Capacity
3.4k RPM
30 hp Power

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LARGER WORK ENVELOPE & LARGER BAR CAPACITY

ST-30LY

Long-Bed CNC Lathe with 13.75 x 62.5" max capacity and 3.0" bar capacity

10" Chuck Size
3.0" Bar Capacity
3.4k RPM
30 hp Power

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Standard Features

ANSWERS TO YOUR CONCERNS ABOUT ADDING A HAAS ROBOT: It won’t take up much space, cost a ton of money, or take weeks to integrate.

SPACE EFFICIENT

COST EFFECTIVE

EASY TO INTEGRATE

EASY TO LEARN

Capacities	S.A.E	METRIC
Chuck Size	8.3 in	210 mm
Max Part Swing	21.0 in	533 mm
Max Cutting Diameter (with BMT65 turret)	11.75 in	298 mm
Max Cutting Length (varies with workholding)	42.5 in	1080 mm
Bar Capacity	2.50 in	64 mm

Travels	S.A.E	METRIC
X Axis	8.40 in	213 mm
Y Axis	± 2.0 in	± 51 mm
Z Axis	42.50 in	1080 mm

Feedrates	S.A.E	METRIC
Rapids on X	472 ipm	12.0 m/min
Rapids on Y	472 ipm	12.0 m/min
Rapids on Z	945 ipm	24.0 m/min

Axis Motors	S.A.E	METRIC
Max Thrust X	4100 lbf	18238 N
Max Thrust Y	2300 lbf	10231 N
Max Thrust Z	5100 lbf	22686 N

Spindle	S.A.E	METRIC
Spindle Nose	A2-6	A2-6
Max Rating	20.0 hp	14.9 kW
Max Speed	4000 rpm	4000 rpm
Max Torque	150.0 ft-lbf @ 500 rpm	203.0 Nm @ 500 rpm
Spindle Bore ø	3.50 in	88.9 mm

Main Spindle C Axis	S.A.E	METRIC
Max Speed	60 rpm	60 rpm
Max Rating	5.0 hp	3.7 kW
Positioning (±)	0.01 °	0.01 °
Brake Diameter	13.9 in	353 mm
Brake Holding Torque	250 ft-lbf	339 Nm
Control Type	Interpolated Motion and Positioning	Interpolated Motion and Positioning

Turret	S.A.E	METRIC
Number of Tools	12 Stations	12 Stations
OD vs ID Tools	Any Combination (will vary with turret)	Any Combination (will vary with turret)
Boring Bar Rear Clearance (from back of turret )	4.00 in	102.0 mm

Live Tooling	S.A.E	METRIC
Max Speed	4000 rpm	4000 rpm
Tooling	BMT65	BMT65

General	S.A.E	METRIC
Coolant Capacity	55 gal	208 L

Air Requirements	S.A.E	METRIC
Air Required†	4 scfm @ 100 psi	113 L/min @ 6.9 bar
Inline Air Hose	3/8 in	3/8 in
Coupler (Air)	3/8 in	3/8 in
Air Pressure Min	80 psi	5.5 bar

Electrical Specification	S.A.E	METRIC
Spindle Speed	4000 rpm	4000 rpm
Drive System	Direct Speed, Belt Drive	Direct Speed, Belt Drive
Spindle Power	20.0 hp	14.9 kW
Input AC Voltage (3 Phase) - Low	220 VAC	220 VAC
Full Load Amps (3 Phase) - Low	40 A	40 A
Input AC Voltage (3 Phase) - High*	440 VAC	440 VAC
Full Load Amps (3 Phase) - High*	20 A	20 A

Dimensions - Shipping	S.A.E	METRIC
Domestic Pallet	190.0 in x 90.0 in x 90.0 in	483 cm x 229 cm x 229 cm
Export Pallet	190.0 in x 90.0 in x 90.0 in	483 cm x 229 cm x 229 cm
Weight	12360 lb	5606.0 kg

*Haas machines are designed to operate on 220 VAC (200-240 VAC) power. An optional internal high-voltage transformer (380 - 480 VAC) is available for all models, except the Desktop Machines, CL-1, CM-1, and SR Series routers. This optional high-voltage internal transformer is not field installable; it must be ordered with the machine.

Haas machines destined for Europe and the UK are configured with an internal high-voltage non-isolated transformer to operate on 400 VAC, except the Desktop Machines, CL-1, CM-1, and SR Series routers.

ATTENTION! Optional high-performance spindles may have a higher power requirement than the standard spindle. However, if the spindle horsepower (kW) does not change, the power requirement remains the same. Verify the power requirement before running power for your machine.

† Air consumption on 40-taper DC Series machines may be higher, when Through-Tool Air Blast (TAB) is activated.

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