Grinding Machine (MQ8260)

Grinding Machine Crankshaft Grinding Machine Model MQ8260A is modified on the base of the Model 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. Model MQ8260Ax16 MQ8260Ax 18 MQ8260Ax20 Max. work diameter × Max. length Φ580× 1600 mm Φ580× 1800 mm Φ580× 2000 mm Capacity Max. swing over table 580 m 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 Max. work length ground between centres 1600 mm 1800 mm 2000 mm Max. work weight 120 kg 150 kg Headstock Centre height 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 Φ900x32xΦ 305 mm Table 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 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