USED HAAS ST-20Y – 2021
The Haas Automation ST-20Y – 2021 is a high-performance Y-axis CNC turning center designed for complete part machining in a single setup. As part of Haas Automation’s best-selling ST Series, the ST-20Y combines turning, milling, drilling, and tapping capabilities with C-axis spindle control and live tooling. This machine is widely used in aerospace, medical, automotive, electronics, and general precision manufacturing where reduced setups and improved part consistency are critical.
The 2021 HAAS ST-20Y features an 8.3″ (210 mm) hydraulic chuck, 2.5″ (63.5 mm) bar capacity, and maximum cutting dimensions of 11.75″ diameter by 22.5″ length. It offers X-axis travel of 8.4″, Y-axis travel of ±2.0″, and Z-axis travel of 22.5″. The machine is equipped with a 4,000 RPM A2-6 spindle powered by a 20 HP vector-drive motor and a 12-station BMT65 turret with live tooling up to 4,000 RPM. Common options include a programmable tailstock, parts catcher, sub-spindle, high-pressure coolant, and the Haas Automatic Parts Loader (APL).
Most 2021 machines include the latest Haas control with a widescreen display, Wi-Fi connectivity, Ethernet, USB, rigid tapping, HaasConnect remote monitoring, and advanced tool management. The ST-20Y is particularly attractive for shops that need done-in-one machining without the cost of more complex mill-turn platforms. Users on machining forums report excellent turned-surface finishes and strong day-to-day reliability, especially for prototyping and medium-volume production.
Industries that use the HAAS ST-20Y include aerospace, medical device manufacturing, hydraulics, electronics, defense, and contract machining. Typical parts include valve components, fittings, shafts, connectors, and precision turned-and-milled parts.
The HAAS ST-20Y remains one of the most sought-after used Y-axis lathes because it offers modern multitasking capability, straightforward programming, and excellent support from Haas Automation.
HAAS ST-20Y – AXIS
| Parameter | Specification |
|---|---|
| Number of Controlled Axes | 3 Axis (X, Y, Z) + C Axis |
| X Axis Travel | 8.4″ (213 mm) |
| Y Axis Travel | ±2.0″ (±51 mm) |
| Z Axis Travel | 22.5″ (572 mm) |
| Programming | G-Code and Conversational Features |
HAAS ST-20Y – CAPACITY
| Parameter | Specification |
|---|---|
| Chuck Size | 8.3″ (210 mm) |
| Maximum Cutting Diameter | 11.75″ (298 mm) |
| Maximum Cutting Length | 22.5″ (572 mm) |
| Maximum Part Swing | 21.0″ (533 mm) |
| Bar Capacity | 2.5″ (63.5 mm) |
HAAS ST-20Y – SPINDLE
| Parameter | Specification |
|---|---|
| Maximum Spindle Speed | 4,000 RPM |
| Spindle Motor | 20 HP (14.9 kW) |
| Spindle Nose | A2-6 |
| Spindle Bore | 3.50″ (88.9 mm) |
| C-Axis Positioning | 0.01° |
HAAS ST-20Y – LIVE TOOLING
| Parameter | Specification |
|---|---|
| Turret Stations | 12 |
| Turret Type | BMT65 |
| Live Tool Speed | Up to 4,000 RPM |
| Milling, Drilling, Tapping | Standard |
HAAS ST-20Y – CONTROL SYSTEM
| Parameter | Specification |
|---|---|
| CNC Control | Haas Next-Generation Control |
| Connectivity | USB, Ethernet, Wi-Fi |
| Remote Monitoring | HaasConnect |
| Rigid Tapping | Standard |
HAAS ST-20Y – AUTOMATION OPTIONS
| Parameter | Specification |
|---|---|
| Automatic Parts Loader (APL) | Optional |
| Auto Door | Optional |
| Parts Catcher | Optional |
| Sub-Spindle | Optional |
| Tailstock | Optional |
HAAS ST-20Y – COOLANT / CHIP MANAGEMENT
| Parameter | Specification |
|---|---|
| Coolant Tank Capacity | 55 Gallons |
| Flood Coolant System | Standard |
| High-Pressure Coolant | Optional |
| Chip Conveyor | Optional |
HAAS ST-20Y – POWER REQUIREMENTS
| Parameter | Specification |
|---|---|
| Electrical Requirement | 220V or 440V / 3 Phase |
| Air Requirement | 4 SCFM @ 100 PSI |
| Full Load Current | 40A @ 220V |
HAAS ST-20Y – DIMENSIONS
| Parameter | Specification |
|---|---|
| Shipping Footprint | 143″ × 90″ × 92″ |
| Machine Weight | 10,480 lbs (4,754 kg) |
HAAS ST-20Y – GENERAL INFORMATION
| Parameter | Specification |
|---|---|
| Manufacturer | Haas Automation |
| Model | ST-20Y |
| Year | 2021 |
| Machine Type | Y-Axis CNC Turning Center |
| Country of Manufacture | USA |
| Typical Condition | Production Ready |
INDUSTRIES THAT USE HAAS ST-20Y
- Aerospace
- Medical Device Manufacturing
- Automotive
- Electronics
- Hydraulics and Pneumatics
- Defense
- Precision Contract Machining
- General Manufacturing
TYPICAL PARTS HAAS ST-20Y CAN PRODUCE
- Valve Components
- Hydraulic Fittings
- Shafts
- Connectors
- Medical Components
- Aerospace Bushings
- Precision Housings
- Turned and Milled Parts
WHY CHOOSE HAAS ST-20Y
The HAAS ST-20Y offers an excellent balance of affordability, capability, and ease of use. Y-axis motion and live tooling allow milling, drilling, and off-center features to be completed in one setup, improving accuracy and reducing labor.
The Haas control is widely regarded as one of the easiest CNC controls to learn and maintain. With optional automation such as the APL and auto door, the ST-20Y can also support unattended production and higher throughput.
For shops seeking a dependable multitasking lathe with strong factory support, the ST-20Y is one of the best values in the CNC turning market.
WHY BUY USED HAAS ST-20Y – 2021
Purchasing a used HAAS ST-20Y – 2021 is an excellent way to acquire a modern Y-axis turning center with live tooling and advanced automation options while avoiding the full cost and lead time associated with a new machine. A 2021 model is recent enough to include the latest Haas Next-Generation Control, Wi-Fi connectivity, remote monitoring, and enhanced productivity features that remain highly competitive in today’s manufacturing environment.
Many used machines come equipped with valuable options such as high-pressure coolant, programmable tailstocks, parts catchers, automatic parts loaders, and sub-spindles. These accessories can save tens of thousands of dollars and allow the machine to be put into production immediately. Because the ST-20Y combines turning and milling in one setup, it reduces handling, improves dimensional consistency, and shortens cycle times.
The machine is especially attractive to job shops and production facilities because it is easy to program, simple to maintain, and supported by Haas Automation’s extensive service network. Replacement parts, software updates, and technical support are readily available throughout North America and internationally.
For manufacturers seeking a reliable, flexible, and automation-ready turning center, purchasing a used 2021 HAAS ST-20Y offers outstanding performance and excellent return on investment.
HOW MUCH DOES A USED HAAS ST-20Y – 2021 COST?
The cost of a used HAAS ST-20Y – 2021 depends on spindle hours, machine condition, installed options, and included tooling.
Machines equipped with high-pressure coolant, bar feeders, sub-spindles, APL automation, and extensive tooling packages typically command higher resale values. Buyers should inspect spindle condition, turret accuracy, Y-axis performance, and maintenance records before purchasing.
Because the ST-20Y is one of the most popular Y-axis turning centers in the market, used demand remains strong. A properly maintained machine can provide years of productive service while delivering substantial savings compared to purchasing a new machine.
