P/N 6500

(Click on image for a larger view)

About the Sherline Stepper Motor Mounting Kit

The stepper motor mounting 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.

  • Price: $147.42
  • P/N 6500
  • Motor Bracket
  • DC Motor Stand Off Assembly
  • Timing belt
  • 15-tooth motor pulley
  • Industrial 30-tooth spindle cog pulley
  • Stepper spindle motor mount
  • Mounting hardware
  • (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. See P/N 65003.)
Figure 1 Figure 2

(Click on the standard headstock images for a larger view)

Figure 3 Figure 4

(Click on the 3C collet headstock images for a larger view)

Installing the Stepper Motor

The conventional installation and an alternate space-saving alternative are shown in the photos on the left. 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) on the left 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.

Figures 3 and 4 show similar setups with a 3C Collet headstock in place of the standard headstock with a 3/4-16 external thread and #1 Morse internal taper.

The headstocks and stepper motors shown in the photos are NOT included with the kit, which must be purchased separately:
P/N 30100 Standard Headstock
P/N 30113 3C Collet Headstock
P/N 67127 Stepper Motor

The 3D ZIP file includes three IGES files: one with a standard headstock setup and two with 3C collet headstock setups. Extract the .zip file to the drive location of your choice.

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