MD1420B UNIVERSAL CYLINDRICAL GRINDER

The machine is specially used to grind outside surfaces and inner bores of cylindrical and conic parts and their accuracy is respectively grades of IT6 or IT5. It is suitable for tool shop, repairing shop and producing workshop in single or small batch process. Longitudinal movement of the worktable is carried our by hydraulic stepless transmission or by handwheel. The infeed of grinding wheel rest is finished by hydraulic device to realize cycle feed and it is also fed by handwheel. Fast advance or reverse of grinding wheel rest and lubrication of worktable’s guideway and screw in the backing plate are all controlled by hydraulic system.

TECHNICAL SPECIFICATION
Grinding dia.
External
cylindrical
With steady rest
Min.
mm
8
Max.
mm
40
Without steady rest
Min.
mm
8
Max.
mm
200
Internal
cylindrical
 With steady rest
Min.
mm
30
Max.
mm
80
Without steady rest
Min.
mm
13
Max.
mm
80
Max. grinding length
External cylindrical
mm
500?¬750?¬1000
Internal cylindrical
mm
125
Max. workpiece weight
kg
50
Center high
mm
125
Distance between centers
mm
500?¬750?¬1000
Workstock center
????  Morse
3
Tailstock center
????  Morse
3
Movement of sleeve of tailstock
mm
30
Min. manual feed
mm
0.0025
Auto-periodic feed
 
??   Yes
Automatic infeed
 
??   No
Wheel dressing and compensation
 
??¶? Manual
Grinding wheel
mm
400??50??203
mm
280??50??203
Wheel speed
m/s
28-35
 
Spindle speed
r/min
1670/1990
 
Max.movement of wheelstock
Includes the rapid movement
mm
186
 
Rapid approach and withdrawal
mm
30
 
Swing angle of wheelstock
??
?«30
Size of the internal grinding wheel
 
Max.
mm
80??32??20
 
Min.
mm
15??16??5
     Total power of motors
kw
7.125
Outline dimension of machine
mm
??2120?¬2654?¬3134?©??1670??1570
Packing case size
500
mm
3040??1740??1950
750
mm
3200??1900??1950
1000
mm
3450??1740??1950
          Gross weight
kg
4000?¬4500?¬5000
         Net weight
kg
3500?¬4000?¬4500
  WORKING ACCURACY
 
A??  Roundness??mm?©
B??Uniformity of diameter in longitudinal section??mm?©