China Crankshaft Grinding Machine Mq8260ax20

Crankshaft Grinding Machine MQ8260Ax20
MQ8260A is modified on the base of the Model MQ8260 and intended for use in the automobile, tractor, diesel engine works and their repair shops to grind the journals and crankpins of crankshafts.
Three different work speeds are obtainable by making use of the belts in the workhead. 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. Wheelhead 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 wheelhead movement. The bed ways and wheelhead are lubricated in an automatic cycle by means of the oil pump.
ModelMQ8260Ax16MQ8260Ax18MQ8260Ax20Max.work diameter xMax.length()Φ 580x 1600mmΦ 580x 1800mmΦ 580x 2000mmCapacity
Max.swing over table580 mm Work diameter ground with steady rest
Φ 30-100 mmΦ 50-120 mm Throw of crankshaft110 mm120 mm Max.work length ground in 3 jaw chuck
1400 mm1600 mm1800 mm M ax.work length ground between centres
1600 mm1800 mm2000 mm Max.work weight120 kg150 kgHeadstock
Centre height300 mm Work speed (rpm25, 45, 9525, 45, 65, 100Wheelhead
Max.cross movement
185 mmWheelhead 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 mmGrinding wheel
Wheel spindle speed740,890 rpmWheel peripheral speed25.6 -35 m/secWheel sizeΦ 900x32xΦ 305 mmTable
Table traverse per turn of handwheel coast
5.88 mmTable traverse per turn of handwheel fine
1.68 mmTable swivel (taper 18/1005°Table swivel per grad of scale (taper 1: 50)
10'Overall capacity of motor9.82 kw11.2 kwOverall dimension (LxWxH) (mm4166x2037x15844900x2037x1584 Weight6000 kg6200 kg7000 kgWorking
Accuracy
Ovality (new standard0.005Cylindricity0.01Roughness Ra0.21