17″ Ball Screw Lathe

8 week lead time

Please note that our ball screws only come in a metric pitch

Ordering options:

Use the selections in the drop-down menus below to configure your machine.
(For more information on the configuration options and accessory packages please see the options tab below)

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About the CNC-Ready Ball Screw Lathe

The ball screw lathe design is a reimagined version of our popular 17″ 4400-series lathe. The lathe has a new solid aluminum base, which creates a very rigid assembly, a beefed-up saddle to accommodate the ball screws, a larger 8″ crosslide, and #23 NEMA frame stepper-motor mounts with high-torque couplings.

Ball Leadscrew Specifications

  • Rolled Ball Screw with BSH Nut
  • 10mm Diameter, 2mm Lead
  • C7 Accuracy*, P1 Preload
    *C7 accuracy has a linear tolerance of 50 micrometers / 300mm or .002″ / 12.0″.

The ball screws are only available in metric, so the numeric graduations on the handwheel dials are 2mm per revolution and .02mm per line.

Connecting your CNC-Ready Lathe to a Controller

Once you have the machine, you will need to attach stepper motors, a CNC driver, and a CNC controller. Sherline offers the following options to connect your ball screw lathe to a CNC controller:

  • Stepper motors–High-torque (P/N 67126, recommended) or standard (P/N 67127)
  • CNC controllers w/4-axis CNC Driver box–MASSO (P/N 8780) or Linux CNC computer (P/N 8761)*

*NOTE: A mouse and keyboard are included with the Linux PC. You must provide a USB dongle and wireless keyboard and mouse set with the MASSO controller.

Ordering options:

Use the selections in the drop-down menus above to configure your machine. See the Options tab above for more specifications on each option and accessory packages.

Standard equipment for the 6840 CNC-ready ball screw lathe includes:

  • A powerful 90V DC motor with electronic speed controller*
  • Standard headstock: #1 Morse taper with 3/4 x 16 external spindle thread (Option to upgrade headstock above)
  • The base is 28″ x 5″ x 1/2″ solid 6061 aluminum plate, and the headstock and tailstock mounts are solid, machined 6061 aluminum
  • The lathe saddle is hard anodized for long wear, and internal oiling ports are incorporated to keep the lathe bed dovetail areas lubricated
  • 2.75″ (70 mm) x 8.0″ (203 mm) crosslide (Option to upgrade to a 13″ crosslide above)
  • 28″ (711 mm) steel bed that has 17″ (431 mm) between centers
  • 2.5″ (63 mm) resettable “zero” handwheel for the leadscrew, one 2″ (51 mm) resettable “zero” handwheel for the crosslide feed screw, and a 2″ (51mm) resettable “zero” handwheel on the tailstock. Each handwheel has laser engraved aluminum handwheel collars*
  • A 3/8″ Insert Holder Tool Post (P/N 7600) with a 55° RH Carbide Tool Holder (P/N 2256)
  • Pulleys, drive belt, faceplate, lathe dog, two dead centers, three hexagonal keys, eight-foot three-wire power cord, and instruction manual
  • Optional limit switches***

* Not included with a lathe without motor and speed control.
**CNC-ready machines cannot be operated manually until stepper motors are installed.
***The limit switches were designed to work with our Sherline/MASSO CNC Controller, but you can connect them to any controller that is configured to work with our limit switches, such as Mach 3, Mach 4, etc. See related products below for limit switch product page.


Below are all of the configuration options for our Ball Screw Lathe. Click the More Info links on any of the products for more detailed descriptions and specifications.

Headstock Options:

Standard #1 Morse Headstock.
More info…

#1 Morse Electroless Nickel-Plated Spindle Headstock.
More info…

30113 3C Collet Headstock

3C Collet Headstock.
More info…

ER-16 Collet Headstock.
More Info…

9/16″ Headstock.
More Info…

Crosslide Options:

8″ Crosslide
Travel: 4.6″ (116 mm)

13″ Crosslide
Travel: 9.25″ (234.95 mm)

Stepper Motor Options:

67127 stepper motor

Standard Stepper Motors.
More Info…

High-Torque Stepper Motors.
More Info…

Driver Box Options:

Standard 4-Axis Linux Driver Box.
More info….

LinuxCNC Computer System with Driver Box.
More Info…

MASSO CNC Controller with Driver Box.
More Info…

MASSO CNC Controller without Driver Box.
More Info…

Accessory Packages:

D Accessory Package includes –