Crankshaft grinding machine MQ8260A

Specifications
 
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.
 
 

 
 
·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)	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

 
 
 
Standard accessories: 
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
 
Optional accessories:
Polisher          
Steady rest
Hanging measuring device   
Diamond dresser      
Digital display device