Vertical fine boring-milling machine, model: T7240
The machine is mainly use for boring large and deep holes, (such as: Cylinder body of locomotive, steamship, car) also can milling the surface of the cylinder.
*Servo-motor control the table longitudinal move and the spindle up and down
Spindle's whirl use variable-frequency motor to adjust the speed, so it's can achieve of stepless speed change
*Electricity of the machine are designed for PLC and man-machine interaction

Max. Boring diameter 400mm
Max. Boring depth 750mm
Spindle carriage travel 1000mm
Spindle speed(stepless speed change for frequency conversion) 50-1000r/min
Spindle feed travel speed 6-3000mm/min
Distance from spindle axis to carriagevertical plan 500mm
Distance from spindle end-face to table surface 25~ 840 mm
Table dimensions L x W 500X1600 mm
Table working slot 5
Table longitudinal travel 1600mm
Table longitudinal travle speed 6~3000mm/min
Table latirudinal travel 300mm
Main motor ( Variable-frequency motor) 33Hz, 5.5KW
Table ongirudinal travel motor(Serve motor) 15Nm
Travel motor of spindle(Serve motor) 15Nm
Boring dimension accuracy IT7
Milling dimension accuracy IT8
Rundness 0.008mm
Clingricity 0.02mm
Boring roughness Ra1.6
Milling roughness Ra1.6-Ra3.2
Overall dimensions 2281X2063X3140mm