Product Overview
Acra's SGT series of heavy duty hollow spindle lathes have an optional spindle bore range from 6" to 21" with either a A2-15, A2-20 or A2-28 mounts. Featuring...
Headstock: 
• The spindle is supported by high precision bearings suitable for both heavy and precision cutting.
• The speeds of spindle have 12 steps and designed on theoretical base. All gears and shafts are made of Ni-Cr-Mo steel and carbonize and ground.
• Control of main drive through electromagnetic brake, and automatic forced lubrication.
• The Gear Box is entirely enclosed construction and provide a range of feedings or thread cuttings (inch, metric, module pitch and diametrical pitch).
• Inch and Metric threading without changing gears.
• Oil both lubrication and built in safety clutch safeguards the continuous and proper operation of the universal gear box.
Carriage & Apron: 
• The Compound Rest can be fixed on the cross-slide anywhere, convenient for cutting work application.
• The Apron gives automatic lubrication and locked-safety device protects threads and feeding.
• Rapid traverse drive for longitudinal-cross feeding and forward & reverse feed operates very light and convenient.
Taper Attachment: 
• The Taper Attachment is designed to easily operate and rapidly cut taper in high accuracy; the device can produce ± 10 angles.
• Electric cable in steel cover to protect wire from chips and prevent trouble with electric wires.
Specifications:
- Overall capacity: 45″/66″ x 240″
 - Swing Over Bed: 45-5/8″
 - Swing Over Cross Slide: 33-7/16″
 - Swing In Gap: 66-7/8″
 - Width of Gap: 18-1/2″
 - Distance Between Centers: 240″
 - Bed Width: 26″
 
Headstock:
- Spindle Nose: A2-28
 - Spindle Bore: 21″
 - Taper of Spindle: MT NO.6
 - Spindle Speeds – Range: 3~300 RPM
 
Carriage:
- Cross Slide Travel: 25″
 - Compound Slide Travel: 16-1/2″
 - Rapid Travel Speed to Carriage: 807″/minute
 
Threads & Feeds:
- Inch Threads: 1/4 ~ 30 TPI
 - Metric Threads: 1 ~ 120 mm
 - Module Threads: 0.25 ~ 30 mm
 - Diametrical Threads: 1 ~ 120 D.P.
 - Longitudinal Feeds: 0.004″ ~ 0.40″/rev
 - Cross Feeds: 0.002″ ~ 0.20″/rev
 
Tailstock:
- Quill Diameter: 4-7/8″
 - Quill Travel: 13-3/8″
 - Quill Taper: MT NO.6
 
Power:
- Spindle Drive Motor: 30 HP x 4P
 - Voltage: 230V/460V AC /3 PH
 
Standard Equipment:
- Electromagnetic Brake
 - 4-Way Rapid Traverse
 - Center Sleeve
 - Tool Post Wrench
 - Anchor Bolt
 - Tool Box & Tool
 - Coolant System
 - Work Light
 - Steady Rest 11-1/2″
 - Travel Splash Guard
 - 4 Way Tool Holder