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Important Update Regarding Sherline Products
October 20, 2026
We would like to share an encouraging development regarding the future of Sherline Products.
We are currently in discussions with an American manufacturer regarding the potential purchase of Sherline’s intellectual property and remaining inventory. The goal of this proposed acquisition is to preserve and revitalize the Sherline brand while providing continued availability of replacement parts, accessories, and machines for our valued customers.
As these discussions progress, we have agreed to temporarily suspend accepting new orders, effective October 19, 2026. This will allow us to preserve our remaining inventory while negotiations are underway.
Although no final agreement has been reached, we are hopeful that this opportunity will provide a positive path forward for the Sherline name and the customers who have trusted our products for more than five decades.
We sincerely appreciate your patience, understanding, and continued loyalty during this transition. We will share additional information as soon as it becomes available.
Our greatest hope is that the Sherline legacy of quality, precision, and American craftsmanship will continue for generations to come.

Karl Rohlin III and Charla Papp
Co-Owners, Sherline Products, Inc.
6500 Stepper Motor Spindle Drive Conversion Kit

Image shown is a representation only. Actual product may vary.

Stepper Motor Spindle Mount Kit

Stepper Motor Spindle Mount Kit
Drive your headstock with a stepper motor instead of the standard DC spindle motor.

SKU: 6500 Categories: , , , Tag:

Product Description

About the Sherline Stepper Motor Mounting Kit

The P/N 6500 kit includes the items you need to mount a stepper motor to drive any Sherline standard or industrial headstock spindle that accepts a motor mounting bracket.

Included in the kit

The kit includes a custom bracket that supports the motor and the standoffs that attach to the mounting bracket. Also included are the standoffs, motor mounting bracket, 15-tooth motor pulley, 30-tooth spindle pulley, toothed drive belt and mounting hardware. Not included are the headstock and stepper motor (P/N 67127), which must be purchased separately. (A 10-tooth drive pulley is also available for special order for a slower 3:1 drive ratio instead of the standard 2:1 ratio. Call for details.)

Delete credit for DC spindle motor when ordering a complete lathe or mill

If you wish to order a Sherline lathe or mill that will be driven by this stepper motor kit rather than the standard DC motor, you can request that we delete the DC motor and speed control. The delete credit is currently $215.16 off the list price of the lathe or mill.

Installing the stepper motor

The conventional installation and an alternate space-saving alternative are shown below. If using the alternative method, flats must be ground on the spindle shaft to accommodate the pulley set screws. If this is not done, the galling of the spindle shaft caused by the set screw points can make the pulley difficult or impossible to remove from the shaft.

The first photo (Figure1) below shows the conventional configuration with the timing belt pulley replacing the standard 2-position V-belt pulley. This gives the most support for the drive belt. Although not originally designed for it, the motor can also be installed in the other direction as shown in the right-hand photo (Figure 2) if space requires. (The standard two-position pulley has been retained here in order to cover the bearings and preload nut.) Additional flats should be ground on the spindle shaft to accommodate the timing belt pulley set screws. The headstocks and stepper motors shown below are NOT included with the kit. (Click on the photos to view a larger image.)

The photos below show different stepper motor setups with a standard headstock with a 3/4-16 external thread and #1 Morse internal taper (Figures 1 & 2) and a 3C Collet headstock (Figures 3 & 4). Click on an image to view the photos in the gallery.


We have had customers who want to use the stepper motor (on the headstock) as a dual purpose motor. They want to use it to index the headstock to do machine work (mill flats, or cut out inlay areas on a pool cue). They also want to use it as a drive motor to turn stock (to replace the DC motor).

NOTE: Stepper Motor RPM Range

Max RPM = 225
Min RPM = 6 – 10

warning-symbol
The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.

safety-glasses-symbol

Always wear safety glasses when operating machine tools.

Download PDF 6500 Instructions

Instructions PDF Download
12050 8-32 x 3/8″ Skt Hd Cap Screw
40020 Motor Bracket
40660 #10 Washer 3/16
40690 10-32 x 3/4″ Skt Hd Cap Screw
43100 DC Motor Stand Off Assembly
65001 Timing Belt
65002 Timing Belt Pulley
*65003 Optional 10T Timing Belt Pulley
65016 Industrial 3O-tooth Spindle Cog Pulley
671030 Stepper Spindle Motor Mount

Click the P/N below to download a zipped version of the IGS 3D CAD file. You will need to extract the zip file before viewing the files.
6500 w/Standard Headstock3D IGS model
6500 w/3C Headstock3D IGS model
Each 3D ZIP files includes two IGES files: two with a standard headstock setups and two with 3C collet headstock setups. Headstocks are shown for reference only (Headstocks not included).
You need an IGS viewer to open .igs files. CLICK HERE to download a FREE IGS viewer.

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    67127 stepper motor
    67127 stepper motor
    Stepper Motors
    Sherline stepper motors are NEMA 23, dual-shaft motors designed specifically for our CNC mills, lathes, and rotary tables.
    Both the standard motor (P/N 67127) and the high-torque motor (P/N 67126) are rated at 2.0 A/phase and are fully compatible with Sherline CNC systems, driver boxes, and motion controllers. The dual-shaft design allows you to add handwheels for manual control when needed. [accordion] [pane title="Features"]
    • NEMA 23 frame size – fits Sherline CNC-ready mills, lathes, and rotary tables.
    • Dual-shaft design – both ends of the shaft are usable; flats are ground on each end for secure attachment of handwheels and couplings.
    • Standard step angle – 1.8° per step (200 steps/rev) for precise motion control.
    • 2.0 A/phase – both motors are rated at 2.0 amps and work with existing Sherline CNC power supplies and driver electronics.
    • 6-lead wiring – allows use in a variety of bipolar or unipolar configurations (see spec sheets for wiring diagrams).
    • Designed for Sherline CNC – plug-and-play with Sherline driver boxes and motion controllers when used with the supplied connectors.
    [/pane] [pane title="Motor Options"]
    P/N 67127 – Standard Stepper Motor (with Plug)
    The standard Sherline stepper motor (P/N 67127) comes pre-wired with six leads into a 5-pin DIN connector that plugs directly into Sherline’s CNC driver boxes and linear or rotary controllers. Simply plug each motor into the corresponding axis cable for a quick, clean setup. This motor is ideal for typical Sherline CNC applications where cutting loads are moderate, such as machining aluminum, brass, plastics, and light cuts in steel.
    P/N 67130 – Stepper Motor (Without Plug)
    P/N 67130 is the same basic motor as P/N 67127 but supplied with six raw wire leads and no connector. It is intended for non-Sherline controllers or custom installations where a different pinout or connector is required.
    P/N 67126 – High-Torque Stepper Motor
    Sherline’s high-torque stepper motor (P/N 67126) uses the same NEMA 23 frame size and 1/4" dual shaft as the standard motor, but delivers over 75% more holding torque. This added torque is especially useful on the Z-axis, where it can better handle the weight of the headstock and motor, and for heavier cuts or higher feed rates. Rated at 2 amps, the high-torque motor is fully compatible with all Sherline CNC machines, including complete CNC systems, the 4-axis driver box, CNC rotary tables, and Sherline linear and rotary controllers. No power supply upgrade is required. [/pane] [pane title="Specifications Comparison"]
    Specification P/N 67127 – Standard P/N 67126 – High-Torque
    Frame size NEMA #23 NEMA #23
    Shaft 1/4" diameter, dual shafts 1/4" diameter, dual shafts
    Step angle 1.8° (200 steps/rev) 1.8° (200 steps/rev)
    Holding torque 0.775 N·m 7.9 kg-cm 109.71 oz-in 6.856 in-lb 1.35 N·m 13.756 kg-cm 191.17 oz-in 11.948 in-lb
    Maximum RPM 530 RPM 530 RPM
    Voltage (nominal) 3.2 V DC 4.5 V DC
    Current 2.0 A/phase 2.0 A/phase
    Rotor inertia 250 g-cm² 480 g-cm²
    Axial / radial load (max) See spec sheet Axial: 15 N (3.37 lbf) Radial: 75 N (16.86 lbf)
    Number of leads 6 leads (with DIN plug on 67127) 6 leads
    [/pane] [pane title="Compatibility & Installation Notes"]
    • Coupler requirement: Because of the increased torque, the high-torque motor (P/N 67126) must be used with the updated CNC coupling (P/N 671052). This coupling replaces the older 3-slot coupling (P/N 67105).
    • Motor mounts: When used with a Sherline stepper motor mount (P/N 67101), be sure that the shaft entering the coupling has a flat aligned with the set screw. Tightening against the round shaft can damage the shaft and make removal difficult.
    • Handwheel use: The dual-shaft design lets you mount a handwheel on the rear shaft for manual operation when the drivers are powered down. When the motors are energized, they hold position and cannot be moved easily by hand.
    • Controller compatibility: P/N 67127 with the 5-pin DIN plug is designed to plug directly into Sherline’s 4-axis driver box, CNC systems, and linear and rotary controllers. P/N 67130 (no plug) is intended for non-Sherline or custom controllers.
    Safety Note: The improper use of machine tools and accessories can result in serious injury. Always read and follow the instructions before installing or operating stepper motors, and always wear appropriate eye protection. [/pane] [pane title="Documents"] [/pane] [/accordion]  
    Price range: $93.61 through $158.41 Read more
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