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MK250 CNC internal grinding machine Main

Home - Product - NC internal grinding machine series

Main characteristics of this machine tools

● This machine is a two axis (X-axis, Z-axis) CNC Internal Grinder, which is mainly used to grind the inner hole, step hole, inner end face and outer end face of the work piece. The grinding cycle is completed automatically (with automatic feed, withdrawal, rough grinding and fine grinding); Automatic dressing of grinding wheel, automatic compensation, etc.).
● The machine tool is fixed by the work piece box, the worktable moves left and right, and the grinding wheel frame do the back and forth feeding movement. The movement of the worktable and grinding wheel frame is driven by the servo motor through the ball screw, both of which adopt linear guide rails.
● The rotation speed of work piece spindle and grinding wheel spindle are controlled by frequency converter to realize stepless speed regulation.
● The machine tool adopts a front movable operation box and an independent electrical cabinet. The protective cover shell has two different styles of semi closed or fully closed for users optional.

Specification parameter list

Model of machine tools MK250
The range of grinding diameter of hole (mm) 100-500
Maximum grinding depth (mm) 500
Swing diameter of work piece (mm) Inside the shell (mm) 510
Outside the shell (mm) 720
The maximum stroke of feeding slide (mm) 200
The maximum stroke of workbench(mm) 730
Maximum rotation angle of lather head(° ) 30°
Rotating speed of work piece (r/min) 30-500 stepless speed regulation
Rotating speed of grinding wheel (r/min) 2000-10000 stepless speed regulation
Motor power of workpiece(kw) 4
Motor power of grinding wheel(kw) 5.5
Motor power of X-axis servo motor(kw) 2
Motor power of Z-axis servo motor(kw) 4
The power of oil pressure motor (kw) 0.55
Cooling motor power (kw) 0.09×2
Rated power(kw) 17.8
Maximum speed of workbench m/min 6
Grinding speed m/min 0-4
Feed speed of grinding wheel m/min 5
X-axis minimum resolution mm 0.001
Z-axis minimum resolution mm 0.001
Maximum load capacity of workpiece (kg) 300
Flow of cooling pump(L/min)
200
The pressure of hydraulic system (MPa) 0.4
Flow of oil pump(L/min) 25
The weight of machine tools(kg)
5600
Machine overall dimension(mm)
4000×1900×2000
Machining precision Roundness of internal hole(μm) 3
Cylindricity of internal hole(μm) 5
Surface roughness of internal hole(μm) Ra0.63
Roughness of end face(μm) Ra0.8

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