The crankshaft grinder Model MQ8260A is modified on the base of the Model MQ8206 and intended for use in the automobile. tractor, diesel engine works and their repair shops to grind the journals and crankpins of crankshafts.
|Max. work diameter x Max. length||Φ580×1600 mm|
|Max. swing over table||Φ580 mm|
|Work diameter ground with steady rest||Φ30×100 mm|
|Throw of crankshaft||110 mm|
|Max. work length ground in 3 jaw chuck||1400 mm|
|Max. work length ground between centers||1600 mm|
|Max. work weight||120 kg|
|Center height||300 mm|
|Work speed (rpm)||25,45,95|
|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|
|Wheel spindle speed||740, 890 rpm|
|Wheel peripheral speed||25.6~35 m/sec|
|Wheel size||Φ900x32xΦ305 mm|
|Table traverse per turn of handwheel coarst||5.88 mm|
|Table traverse per turn of handwheel fine||1.68 mm|
|Table swivel (taper 18/100)||5°|
|Table swivel per grad of scale (taper 1:50)||10|
|Overall capacity of motor||9.82 kw|
|Overall dimensions (LxWxH)||4166x2037x1584 mm|
|Packing dimensions (LxWxH)||4300x2200x2000 mm|
- Three different work speeds are obtainable by making use of the belts in the headstock.
- Cross chucks are used in the headstock and tailstock.
- Friction coupling is used in the headstock transmission chain for its easy adjustment.
- Table traverse is operated either by hand or by power.
- Whee head rapid approach and withdrawal is effected through hydraulic means.
- The wheel spindle being of 80mm in diameter has good rigidity and strength.
- Use is made of roller ways for wheel head movement.
- The bed ways and wheel head are lubricated in an automatic cycle by means of the oil pump.