(Click on photo for larger image.)
| P/N | NAME | WT. | PRICE |
| 6500 | Stepper Motor Spindle Drive Conversion Kit | 1.5 | $135.00 |
P/N 6500—$135.00
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.
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.)
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 -$105.00 off the list price of the lathe or mill. (9/06)
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 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 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 headstock and stepper motor shown here are NOT included with the kit. (Click on either photo to view a larger image.)
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