Description
- Sherline Dovetail-Base Headstock w/ 90-Volt DC Motor 3/4-16 #1m Taper
- Features precision-engineered dovetail base for stability
- Constructed from durable 6061-T6 aluminum
- Offers a variable speed range from 70 to 2800 RPM
- Includes lifetime lubricated Class 5 bearings
- Utilizes a 90-Volt DC motor with significant torque
The Sherline Dovetail-Base Headstock w/ 90-Volt DC Motor 3/4-16 #1m Taper is a precision-engineered component designed for industrial applications, drawing its design from the headstock used in Sherline lathes and milling machines. Constructed from extruded 6061-T6 aluminum, it features a durable black anodized finish. This headstock is equipped with a 3/4-16 #1 Morse taper spindle, which is supported by lifetime lubricated Class 5 bearings. These bearings are known for their accuracy, tighter tolerances, and smoother operation, allowing for a continuous speed of up to 4,000 RPM, with the potential to reach 10,000 RPM with adjusted preload settings.
The headstock’s dovetail base is designed to fit seamlessly with Sherline’s steel dovetailed bed and column materials, ensuring stability and precision during operation. It includes a brass gib for secure attachment and a mounting point for a saddle nut on Sherline leadscrews. The spindle is equipped with a dust cover washer to protect the bearings, although it is not entirely sealed, making it unsuitable for environments with excessive dust or coolant exposure.
The accompanying 90-Volt DC motor provides significant torque at low RPMs, which is crucial for machining tasks. This motor is quieter and smoother compared to equivalent AC/DC motors, offering a variable speed range from 70 to 2800 RPM. The motor’s speed control system is versatile, accepting inputs from 100 VAC to 240 VAC and converting them to a 90V DC output. The motor also features a two-step V-belt pulley system, allowing for adjustments between high-speed, low-torque and low-speed, high-torque operations.
Note: Ensure the spindle and setup are adequate and safe for the intended operation, as the spindle is not designed for high RPM rotation of long or out-of-round parts.
View moreWhat’s Included
- 1x Sherline Dovetail-Base Headstock w/ 90-Volt DC Motor 3/4-16 #1m Taper
- 1x Preload Nut
- 1x 3/4-16/#1 Morse Spindle
- 1x Bearing Dust Cover Washer
- 1x 0-32 x 5/8 Socket Head Cap Screw
- Class 5 Headstock Bearings
- #2 x 1/4 Self-Tapping Phillips Head Screws
- 1x 10-32 X 1/4 Flat PT Set Screw
- 1x 10-32 x 1/2 Socket Head Cap Screw
- 1x 2-Step V-Belt Pulley
- 1x Headstock Case, Dovetailed Base
- 1x Industrial Headstock Spacer
- 1x Saddle Nut Attachment Plate
- 1x Industrial Brass Gib
Dimensions
- Spindle base size: 3.50 x 3.375 inches (88.9 x 85.7 mm)
- Spindle case height: 3.625 inches (92 mm)
- Spindle centerline height above table: 2.50 inches (63.5 mm)
- Hole through spindle: 0.405 inches (10 mm)
Links
ZIP File
- Sherline Dovetail-Base Headstock w/ 90-Volt DC Motor 3/4-16 #1m Taper – 3D Model IGS
Specifications
- Spindle nose thread: 3/4-16
- Spindle nose internal taper: #1 Morse
- Bearings: Two 20 mm, class 5, lifetime lubricated ball bearings with adjustable preload
- Runout at spindle nose: 0.001 (Most are within 0.0005)
- End play (factory preload adjustment): 0.0002 (0.0051 mm)
- Recommended continuous spindle speed: 4000 RPM or less
- Maximum spindle speed: 10,000 RPM
- Mounting provision: Dovetail with brass gib
- 1/2 HP 90-volt high-torque DC motor (single direction)
- 2-step V belt pulley (second position for more torque at low RPM)
- Fiberglass-reinforced urethane drive belt
- Variable speed electronic speed control: 70-2800 RPM
- Load compensating circuit maintains constant RPM
- Speed control accepts input from 100 VAC to 240 VAC, 50 or 60 Hz, and converts it to 90V DC output to the motor
- Eight-foot, three-wire power cord
Unconditional Satisfaction Guarantee
