Used Haas SL-20 Series

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2005 Haas SL-20B

CNC Lathe

Ref # 8074777

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2007 Haas SL-20TB

CNC Lathe

Ref # 8073001

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Specifications, from the machines we have handled

Chuck Size	8" (21 of 23), 10" (2 of 23)
Bar Capacity	2" (17 of 23), 2.5" (6 of 23)
Swing	23" (19 of 23), 21" (3 of 23)
Turning Diameter	10.3" (13 of 23), 10" (8 of 23), 11.75" (2 of 23)
Distance Between Centers	20" (11 of 23), 24" (6 of 23), 23" (3 of 23), and 2 others
X-Axis Travel	8" (1 of 23)
Z-Axis Travel	22.5" (1 of 23)
Spindle Speed	4,000 RPM (14 of 23), 3,400 RPM (6 of 23), 3,200 RPM (1 of 23), and 2 others
Turret	12 Station (16 of 23), 10 Station (7 of 23)
Control	Haas CNC (22 of 23)
Power Requirement	230V (2 of 23)

Chuck Size

8" (21 of 23), 10" (2 of 23)

Bar Capacity

2" (17 of 23), 2.5" (6 of 23)

Swing

23" (19 of 23), 21" (3 of 23)

Turning Diameter

10.3" (13 of 23), 10" (8 of 23), 11.75" (2 of 23)

Distance Between Centers

20" (11 of 23), 24" (6 of 23), 23" (3 of 23), and 2 others

X-Axis Travel

8" (1 of 23)

Z-Axis Travel

22.5" (1 of 23)

Spindle Speed

4,000 RPM (14 of 23), 3,400 RPM (6 of 23), 3,200 RPM (1 of 23), and 2 others

Turret

12 Station (16 of 23), 10 Station (7 of 23)

Control

Haas CNC (22 of 23)

Power Requirement

230V (2 of 23)

Questions buyers ask

What is the difference between a Haas SL-20 and an SL-20T?

The T is the tailstock-equipped version. It is also the one you are most likely to find used: as of August 2026, of the 23 SL-20 machines KD Machinery has bought, sold or currently has in stock, 10 were SL-20T and 9 were the base SL-20.

What chuck size does a Haas SL-20 have?

An 8-inch chuck on almost all of them. Across the 23 machines KD has handled as of August 2026, 21 carried an 8-inch chuck and 2 a 10-inch.

What spindle speed does a Haas SL-20 run?

4,000 RPM on most machines. As of August 2026 KD has handled 14 rated at 4,000 RPM and 6 at 3,400 RPM, so it is worth confirming on a specific machine.

What years was the Haas SL-20 built?

The SL-20 machines KD Machinery has handled, as of August 2026, span build years 1999 to 2009.

Before you buy

SL or ST?

The SL is the older generation and the ST the newer one. In practice it is a limited budget that fits a buyer to an older SL.

The ST is faster and holds tolerance better on long runs. An SL suits short batches and one-offs.

The control is not a separate decision here. It is on every newer machine, so it tracks how old the machine is rather than telling you anything the generation has not already told you.

Getting one inspected

We always strongly recommend an inspection before you buy. KD does not perform it ourselves — the inspection is done by you, by a third-party technician, or by the OEM.

We have a network of 3rd party techs whom we can recommend. Most buyers are looking at a machine in another state or across the country, and sending a tech who is already nearby saves the travel time and cost of going to see it yourself.

An inspection on a lathe typically covers the way covers, the chuck and jaws, the tailstock, turret indexing, coolant condition and ballscrew backlash.

Spindle hours are worth confirming rather than taking from a listing, because an hours meter can be reset. A high-hour machine that has been maintained regularly is a lot better than a lower-hour machine that has been neglected.

Buy the options from the factory

We would not recommend buying a machine and adding options later. It is very expensive to do so if it did not come out of the factory with those options.

That applies to live tooling, a tailstock, a sub-spindle, high-pressure coolant, a tool presetter, a parts catcher and a chip conveyor. The parts catcher and the chip conveyor look like bolt-ons and are not — they are hard and expensive to add after the fact.

A bar feeder is the exception. That one can be added at a reasonable expense.

Clear title

KD runs lien searches on every transaction so that our buyers can have peace of mind that they are purchasing an asset that does not have any active liens on it. We take this very seriously and are willing to pass up a deal if the seller won't cooperate on getting active liens cleared.