Acra’s 14"/21" x 40" Precision (8 Speed) Gap Bed Engine Lathes are made in Taiwan and have a 2-1/16" Spindle Bore. Some of the basic features are:
Bed
- One-piece casting base
- Meehanite casting helps reduce stress cause by vibration.
- Induction hardened and precision ground bed ways, plus precision hand scraped removable gap
- Foot brake
- Turcite B coating between bed and carriage
Gearbox
- Universal type allowing a wide range of inch, metric, M.P., D.P. threads without change gears.
Headstock
- Housing is vibration-absorbent, deflection-free
- Gears are hardened & MMG or REISHAUER ground
Heavy Duty Spindle
- Machined from forged alloy steel, hardened ground & dynamically balanced
- Three point support by high grade precision, machine tool taper roller & ball bearings
Apron
- RIH or LJH wheel can be available on request
- Integrated automatic control for longitudinal & cross feeds, forward & reverse feeds
Carriage & Slide
- Anti-float design backlash eliminator fitted in cross-slide nut
- Safety clutch at feed shaft
- One shot lubrication in carriage & top slide
- Dual dials supply inch system screw
- Metric dial supply metric system only
Safety Features
- Nylon safety gears in end train
- Shear pin in leadscrew
Specifications
- Capacity: 14″/21″ x 40″
- Swing Over Bed: 14″
- Swing Over Cross Slide: 8-3/8″
- Swing In Gap: 21″
- Distance Between Centers: 40″
- Bed Width: 10-1/4″
Headstock
- Spindle Nose: D1-6
- Spindle Bore: 2-1/16″
- Taper of Spindle: MT No. 5
- Spindle Speeds – Steps: 8 step
- Spindle Speeds – Range: 70 ~ 1,800 RPM
Carriage
- Cross Slide Travel: 8-11/16"″
- Compound Slide Travel: 5-1/2″
Threads & Feeds
- Inch Threads (45): 2~72 TPI
- Metric Threads (39): 0.2 ~ 14 mm
- Longitudinal Feeds: 0.002-0.067″/rev
- Cross Feeds: 0.001-0.034″/rev
- Diametrical Threads (21): 8-44
- Module Threads (18): 0.3-3.5
Tailstock
- Quill Diameter: 2″
- Quill Travel: 6″
- Quill Taper: MT No. 4
Power
- Spindle Drive Motor: 5 HP
- Voltage: 230V or 460V AC/3 PH
Standard Equipment
- 8″ 3-Jaw Chuck
- 10″ 4-Jaw Chuck
- Full Length Splash Guard
- Steady Rest/Follow Rest
- Coolant System
- Foot Brake
- Work Lamp
- Gap Bed
- 4 position square tool post
- Tool box with tools
One (1) Year MFG Parts Warranty
