ACRA MODEL 4V HEAVY DUTY BED TYPE VERTICAL BORING & MILLING MACHINE

Table and Saddle:
• The Table and Saddle are made of high-quality cast iron which has been carefully stress relieved.
• Way surfaces are hand scraped and finished

Feed Box:
• Table and Saddle feed can be driven by power or manual operation, and is easy to change speeds and to operate.
• Because of the large range of speeds, it is simple to go from low speed heavy cutting to high speed
finishing cutting.

Backlash Eliminator:
• Table feed system is equipped with easy adjustable backlash eliminator to increase operating stability and cutting efficiency.
• Large supporting surface and narrow square guide ways provide stable and smooth sliding.

Accuracy of Table and Saddle:
• Table and saddle are made of high quality cast iron, treated through stress relieving.
• The sliding surfaces are scrapped and finished.
• The upper, rear and front reference surfaces are ground, T-slots are correctly machined. So that the flatness, parallelism and squareness all meet the requirements of operation and are convenient in setup the work pieces.

Specifications:
Table Travel X (Longitudinal):                                     47-1/4”
Table Travel Y (Cross):                                                17-11/16”
Vertical Spindle Head Travel (Vertical):                       21-5/8”
Vertical Spindle Nose to Tabletop:                             3-15/16” ~ 25-5/8″
Vertical Spindle Center to Column Front:                   17-11/16”
Table Working Area:                                                    74-13/16” x 17-11/16″
T slot (Wide x No. x Pitch):                                          0.7” x 5 x 3-1/8”
Tabletop to Floor:                                                        33-1/2”
Spindle Nose:                                                              ISO R297 No.50
Vertical Spindle Speeds(12):                                        45-1,500 Infinitely Variable
Z-Axis Feeds (Vertical Spindle):                                   0.002 ~ 0.008”/min
Rapid Traverse (Longitudinal & Cross):                       113-3/8”/min
Feed Rates (Longitudinal & Cross):                             1-1/8” ~ 34-7/16″/min
Change of Feeds:                                                         12
Motors:
     Vertical Spindle:                                                       AC 15 HP
     Feed:                                                                        AC 2 HP – 4P
     Lubrication:                                                              AC 3W-4P
     Cutting fluid:                                                            AC 1/6 HP-2P
Voltage:                                                                         220V AC~3 PH
Weight                                                                          11,500 lbs

Standard Equipment:
• Coolant System.
• Auto Lubrication System.
• Draw Bar.
• Leveling Blocks.
• Automatic Table Feeds with Rapid Traverse.
• Tools and Toolbox.
• Hardened & Ground Box ways.