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MQ8260A/1600 MQ8260A/1800

MQ8260A crankshaft grinding machine is intended for use in automobile, tractor and diesel engine repairing shops to regrind the crankpins and journals of crandshafts. Wheelhead rapid approach and withdrawal is hydraulically effected, the worktable is operated approached either by hand or by power. Power table traverse, either left or right, is momentily actuated by depressing and releasing the electric push button in connection with the desired direction. This arrangement facilitates table spacing for the grinding of the next journal or crankpin.
  • Features
  • Specification
  • Standard Accessories
  • Optional Accessories
  • real photo

·Four different work speeds are obtainable by making use of a double - speed motor and the belts in workhead.
·Union chucks are used in the headstock and tailstock for adjusting eccentricity up to120 mm.
·Friction coupling is used in the headstock transmission chain for its easy adjustment.
·Table longitudinal traverse is operated either by hand or by power.
·Wheelhead rapid approach and withdrawal is effected by hydraulic means .
·Rolling guideways are used on wheelhead and made by high quality material . The wheel spindle being of80 mmin diameter has good rigidity and strength.
·Plastic coated bed ways with less friction.
·The bed ways and wheelhead ways are lubricated in automatic cycle by means of oil pump.
·The digital display device can be optional.



















 



Model

MQ8260Ax16

MQ8260Ax18

MQ8260Ax20

Max. work diameter × Max. length

Φ580×1600mm

Φ580×1800mm

Φ580×2000mm

Capacity

 Max. swing over table

580 mm

 Work diameter ground with steady rest 

Φ30-100 mm

Φ50-120 mm 

 Throw of crankshaft

110 mm

120 mm

 Max. work length ground in 3 jaw chuck 

1400 mm

1600 mm

1800 mm

 M ax. work length ground between centres 

1600 mm

1800 mm

2000 mm

 Max. work weight

120 kg

150 kg

Headstock

Centre heigt

300 mm

 Work speed (rpm

25,45,95

25,45,65,100

Wheelhead

 Max. cross movement 

185 mm

Wheelhead rapid approach & withdrawal

100 mm

 Wheelhead feed per turn of cross feed handwheel

1 mm

 Wheel feed per grad of cross feed handwheel 

0.005 mm

Grinding wheel

Wheel spindle speed

740, 890 rpm 

Wheel peripheral speed

25.6 – 35 m/sec 

Wheel size

Φ900x32xΦ305 mm 

Table

Table traverse per turn of handwheel coast

5.88 mm 

Table traverse per turn of handwheel fine 

1.68 mm

Table swivel (taper 18/100)

Table swivel per grad of scale (taper 1:50) 

10’

Overall capacity of motor

9.82 kw

11.2 kw

Overall dimension (LxWxH) (mm)

4166x2037x1584

4900x2037x1584

 Weight

6000 kg

6200 kg

7000 kg

Working

Accuracy

Ovality (new standard

0.005

Cylindricity

0.01

Roughness Ra

0.21

jaw chucks
wheel dresser
wheel balancing arbor
leveing wedge
driving dog
vertical aligning stand
horizontal aligning stand
wheel balancing stand
hanging measuring device
steady rest
centering device
grinding wheel

Polisher             

Diamond dresser      

Digital display device