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Headstock and Motor Unit w/10,000 RPM Pulley

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SKU: 3307 Categories: ,

Product Description

About Sherline Headstock and Motor Units

Sherline headstock/motor/speed control units have long been popular with tooling designers and home shop users making special tooling. Why reinvent the wheel when such a powerful, compact, and economical powered spindle already exists? Now we have expanded the capability of our spindle by offering a pulley ratio that makes possible spindle speeds of up to 10,000 RPM. It can be used as a stand-alone unit for custom spindle applications or in seconds it can replace the standard 2,800 RPM max spindle used on all Sherline lathes and milling machines.

A second pulley position provides a lower top speed but multiplies the power to provide more torque, particularly at low speeds. The maximum speed of 2,200 RPM approximates the speed of the standard pulley set provided with all Sherline machines.

NOTE: Because of the high-speed capability of this unit, the factory preload setting has been reduced from .0002″ of end play to .0003″ of end play. This allows higher speed and reduces bearing heating.

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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.

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Always wear safety glasses when operating machine tools.

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Motor and Speed Control ELECTRIC MOTOR SPECIFICATIONS FROM MANUFACTURER
Type of enclosure Totally enclosed, non-vented
Duty rating Continuous–10 oz. in. at 6100 rpm, .85 amperes; Intermittent–30 oz. in. at 5500 rpm, 1.75 amperes (5 minutes on / 15 minutes off)
Output horsepower .06 KW (60 W) at 10 oz. in. / 6100 rpm
AC voltage (input) Normally 115 VAC, 60 Hz, Single Phase to rectifier (Sherline electronic speed control converts any input from 100 VAC to 240 VAC, 50-60 Hz.)
DC voltage 90V DC to motor (60 Hz)
Speed in rpm 6100 rpm continuous
Class of insulation Class A, 105° (C.) insulation system
Normal full load current .85 amperes
Starting current 1.7 amperes instantaneous starting current (<100 milliamperes). This is also stall current in True RMS
Max current at time of changeover from lower speed to higher speed Depends on load
Type of motor 3.00 inch (outer diameter) sub-fractional horsepower brush-type permanent magnet motor
Temperature rise at ambient 50° C. Less than or equal to 45° C.
Motor frame size 3 inches
End use of motor Drive unit for lathe or mill

Internal Motor Brushes

Compatible with Leeson motors.
See P/N 43500 for replacement brushes. You can find the instructions for replacing the brushes here.


Compatible with Hill House motors.
Due to the design of the motor and brush housing, attempting to disassemble the motor will likely damage the brush housing, rendering the motor unusable. Therefore, brush replacement must be performed at the factory if your motor is less than a year old and still under warranty. Contact us for information on sending your motor back for service.

External Motor Brushes

Compatible with Leeson, Protech and Specialty motors.
See P/N 45451 for replacement brushes.

Dimensions – .24 x .24 x .62 / 6.10 × 6.10 × 15.75mm

Compatible with Protech and Hill House motors.
Currently not available, but we are looking for a new supplier.

Dimensions – .31 x .23 x .65 / 7.87 × 5.84 × 16.51mm

Compatible with Hill House motors.
See P/N 45465 for replacement brushes.

Dimensions – .17 x .38 x .7 / 4.32 × 9.65 × 17.78mm

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