Handwheels, leadscrews and leadscrew drives

(Click on photo for larger image.) A 2" diameter adjustable zero handwheel is shown here being used to drive a small slide. Handwheels are available in sizes from 1-5/8" to 2-1/2", with and without the resettable collar. Laser engraved markings (in inch or metric increments) are precise and easy to read. The handwheels attach to a 1/4" shaft with a set screw. Leadscrews with a thread corresponding to the handwheel markings are also available. Handwheel prices start at just $10.80. 

Simple slides and drives can be devised in your own shop using standard components available from Sherline Industrial Products. Using an accurately marked handwheel on a threaded rod of known pitch provides precise control over linear movement. These nicely machined and finished components will also add a professional look to your designs. Components for backlash adjustment are provided when ordered with a leadscrew. If you want to go the next step to automated control, take a look at the stepper motor driven leadscrews near the bottom of this page.

(Click on photo for larger image.) Anodized aluminum handwheels offer a high contrast to the laser engraved markings, making them both accurate and easy to read. From left to right are shown a 1-5/8" standard handwheel, a 2.5" standard handwheel, a 2" deluxe adjustable handwheel and a 2.5" deluxe adjustable handwheel. All are available with either inch or metric leadscrew pitch and corresponding handwheel increment markings.

CLICK HERE for a Dimensioned Drawing of the Handwheels

Sherline handwheels can be used in many applications

Sherline handwheels are designed to be used with a 20 TPI leadscrew and are graduated in 50 increments, each representing .001" of movement. In their simplest form, they could be attached to a cut-off 1/4-20 bolt or threaded rod  to drive a simple mechanism with a relatively high degree of accuracy. Metric versions are also available with a 1 mm pitch and are marked with 100 divisions. In this case each division represents .01 mm of movement. The handwheels can be used on threaded stock or greater accuracy can be obtained using precision rolled leadscrews available from Sherline. (See next section.) The black handle rotates on a pin, making for smooth operation. A knurled outer surface gives good feel for fingertip control on fine feeds.

Standard Aluminum Handwheels...

The standard handwheel is 1-5/8" in diameter and has a rotating handle for smooth operation. The through hole accepts a .250" shaft, and a set screw is provided to secure the handwheel in place. A larger 2.5" diameter version is also available. The handle on this version is correspondingly larger. The handwheel body is machined from red anodized 6061 T6 aluminum bar stock. Increments are laser engraved into the body for accuracy and easy readability. 

    P/N 40050—1-5/8" Standard Handwheel (inch) with 50 increments—$11.50
    P/N 41050—1-5/8" Standard Handwheel (metric) with 100 increments—$11.50
    P/N 3400—2.5" Large Handwheel (inch) with 50 increments—$15.75
    P/N 3410—2.5" Large Handwheel (metric) with 100 increments—$15.75

Deluxe Aluminum Resettable Zero Handwheels...

The deluxe handwheel is of the resettable zero variety with a lockable rotating collar. Releasing the knurled lock nut allows the graduated collar to be rotated without moving the handwheel body. The collar can be reset to zero (or any number) and relocked to aid in moving to the next setting with a minimum of calculation. This is convenient and helps eliminate math errors. The body is clear anodized 6061 T6 aluminum and the graduated collar is red anodized aluminum. A rotating handle is mounted to the body and a set screw is provided for securing the handwheel to a .250" diameter shaft.

    P/N 3420—2" Adjustable zero handwheel (inch) with 50 increments—$36.75
    P/N 3430—2" Adjustable zero handwheel (metric) with 100 increments—$36.75

    P/N 3440—2.5" Adjustable zero handwheel (inch) with 50 increments—$42.00
    P/N 3450—2.5" Adjustable zero handwheel (metric) with 100 increments—$42.00

(Click on above photos for larger image.) Handwheels are also available as an assembly with leadscrew, nut and thrust. From left to right are 11" leadscrew with 1-5/8" standard handwheel, 2.5" standard handwheel, 2" adjustable handwheel and 2.5" adjustable handwheel. A hex key is included for tightening the set screw.

Handwheels with 11" leadscrew, thrust and nut

Don't reinvent the wheel! If you need to move a small slide or object a controlled distance, these parts offer a convenient and economical way to do it with off-the-shelf parts. Sherline handwheels can be purchased as a set with a leadscrew of the appropriate thread, a thrust collar and a brass nut. The replaceable nut can be secured in a predrilled hole in the part to be moved using a set screw. (In place of the nut, the leadscrew could be simply inserted into a hole drilled and tapped with the appropriate thread in the part to be moved, although using the brass nut means the least expensive part is the one that is replaced when worn out.) The collar is attached to the fixed portion of your design with a single screw (provided). Also included is a backlash nut and a lock to secure it, which allows backlash to be controlled on the leadscrew if desired. The leadscrew is over 11" long and is available in inch (1/4-20) or metric (6.3 x 1 mm) thread pitches and matching handwheel graduations. One rotation of the handwheel drives an inch leadscrew .050" while a metric leadscrew moves 1 mm. Inch handwheels have 50 graduations representing .001" and metric handwheels have 100 graduations representing .01 mm. A hex key is provided for the handwheel set screw.

    P/N 6580—1-5/8" Standard handwheel (inch), 11" leadscrew, thrust, nut, backlash lock—$31.50
    P/N 6581—1-5/8" Standard handwheel (metric),  11" leadscrew, thrust, nut, backlash lock—$31.50

    P/N 6582—2.5" Standard handwheel (inch), 11" leadscrew, thrust, nut, backlash lock—$38.00
    P/N 6583—2.5" Standard handwheel (metric), 11" leadscrew, thrust, nut, backlash lock—$38.00

    P/N 6584—2" adjustable zero handwheel (inch), 11" leadscrew, thrust, nut, backlash lock—$56.75
    P/N 6585—2" adjustable zero handwheel (metric), 11" leadscrew, thrust, nut, backlash lock—$56.75

    P/N 6586—2.5" adjustable zero handwheel (inch), 11" leadscrew, thrust, nut, backlash lock—$63.00
    P/N 6587—2.5" adjustable zero handwheel (metric), 11" leadscrew, thrust, nut, backlash lock—$63.00

Simple CNC control over your slide can be achieved by using a stepper motor to drive the leadscrew. A handwheel is provided for backup manual control. (Click on photo for larger image.) The leadscrew nut and anti-backlash nut are shown threaded onto the leadscrew. The lock for the backlash nut is next to the leadscrew as are the two screws provided to attach the stepper motor mount to your fixture.

Stepper motor driven leadscrews

In place of the handwheel, a NEMA 23 frame size stepper motor can also be used to drive a leadscrew. Included with the set is Sherline's stepper motor mount which features dual preloaded ball bearings to eliminate end play and a dampened coupling to smooth out the stepping action. The 11" leadscrew is .250" diameter, precision rolled with 20 threads per inch. (Metric leadscrew with 1 mm pitch also available.) Also included is a matching brass nut and anti-backlash nut and lock. Mounting screws are provided for the stepper motor mount. Also included is a template drawing showing location of the mounting holes. The stepper motor is a high quality 2 amp, 136 oz-in motor with dual shafts. The dual shaft design allows a Sherline handwheel (included) to be used for manual control over the leadscrew in addition to stepper motor control. The motor has six wire leads that allow it to be wired in either a uni-polar or bi-polar configuration using a CNC driver of your choice or design. (CLICK HERE for stepper motor specifications.)

    P/N 6590—Stepper motor driven 11" leadscrew (1/4-20) with motor mount, 50-division handwheel, preloaded bearings, coupler and nut—$141.75

    P/N 6591—Stepper motor driven 11" leadscrew (6.3 x 1 mm) with motor mount, 100-division handwheel, preloaded bearings, coupler and nut—$141.75

When combined with Sherline's P/N 8800/8810 programmable linear controller, you have a complete, self-contained single axis CNC power feed. Power supply, mounting screws and anti-backlash nut are not shown but are included. The extra cable is provided for activation with a limit switch or for "daisy chaining" with another controller. (Click on photo for larger image.)


A stepper motor driven leadscrew with programmable control

If you don't have the capability or don't wish to provide your own CNC driver for the stepper motor/leadscrew unit, Sherline offers a self-contained controller that makes driving the stepper motor easy. The controller is about the size of a large handheld calculator. It is programmed by simple entry of commands right on its own keypad. No knowledge of G-code is needed, all entries are simple number values. An LCD readout cues the operator as to the sequence of the entries and reads out the numbers entered. The values that can be controlled are feed rate, distance, direction and backlash compensation. Two programs of up to 40 blocks are available and can be held in memory. The controller can be activated by your push-button command, a limit switch or signal from another controller or CNC system. The motor can be run in either direction with no programming by using the "Jog" button on the keypad.  The leadscrew is over 11" long with a 1/4-20 thread. Complete instructions are included or they can be read online at http://www.sherline.com/8800inst.pdf. Also included with the unit are a 110VAC power supply, mounting bolts, nut, anti-backlash lock and a cable for input from a limit switch or another controller. In 2012 a metric version of the controller was made available along with a leadscrew with a 1.0 mm pitch as P/N 6596.

    P/N 6595/6596 Stepper motor with controller and leadscrew unit—$577.50

If you have any questions about the feasibility of your proposed project or the capabilities of our equipment, call us at (800) 541-0735 or (760) 727-5857. The best time to call is Monday through Friday between 11 AM and 3 PM (Pacific). Please ask for Charla Papp.


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