The crankshaft grinder Model MQ8260A/2000 is the latest product 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, but also for use in large engineering machinery and diesel engines for ships to grind crankshaft.
Structure features:
1. Four different work speeds are obtainable by making use of a double-speed motor and the belts in the workhead.
2. Union chucks are used in the headstock and tailstock for an adjustable eccentricity up to 120mm.
3. Friction coupling is ued in the headstock transmission chain for its easy adjustment.
4.Table traverse is operated either by hand or by power.
5.wheelhead rapid approach and withdrawal is effected by hydraulic means.
6.Rolling guideways are used on wheelhead. And made by high quality material, the wheel spindle being of 80mm in diameter has good rigidity and strength.
7.Plastic coated bed ways with less friction.
8.The bed ways and wheelhead ways are lubricated in an automatic cycle by means of the oil pump.
9.the digital display can be optional.

Item MQ8260A /1600
Max. work swing diameter ?Max. work length: ф580?600mm
Work diameter ground with steady rest: ф30-ф100mm
Throw of crankshaft: 110mm
Max. work length: 1400mm( in 3 jaw chuck ) /
1600mm ( between centers )
Max. work weight: 120kg
Headstock
Center height: 300mm
Work speed ( 3 steps ): 25/45/95 r/min
Wheel head:
Max. cross movement: 185mm
Wheel head rapid approach and withdrawal: 100mm
Wheel feed per turn of cross feed hand wheel: 1mm
Per grad. Of cross feed hand wheel: 0.005mm
Grinding wheel
Spindle speed ( 2 steps ): 740 / 890 r/min
Peripheral speed: 25.6-35 m/sec
Wheel size: ( O.D. 舲ith ?Bore ) ф900 ?32 ?ф305mm
Table
Table traverse per turn of hand wheel: 5.88mm (coarse) / 1.68mm (fine)
Table swivel ( taper 18/100 ): 5? Table swivel per grad of scale ( taper 1:50 ): 10′
Overall capacity of motor: 9.82kw
Overall dimension (L ?W ?H): 4166 ?2037 ?1584mm
Weight: 6000kg
Working accuracy:
ovality 0.005
cylindricity 0.01
roughness Ra 0.32
Main accessories:
Jaw chuck 2 pcs
Wheel dresser 1 set
Steady rest 1 set
Wheel balancing stand 1 set
Leveling wedge 1 set
Wheel adaptor 2sets (one on machine)
Driving dog 1 set
Grinding wheel 2sets (one on machine)
Vertical aligning stand 1 set
Horizontal aligning stand 1 set




Item MQ8260A/1800
Max. work swing diameter ?Max. work length: ф580?800mm
Work diameter ground with steady rest: ф30-ф100mm
Throw of crankshaft: 110mm
Max. work length: 1600mm( in 3 jaw chuck ) /
1800mm ( between centers )
Max. work weight: 120kg
Headstock
Center height: 300mm
Work speed ( 3 steps ): 25/45/95 r/min
Wheel head:
Max. cross movement: 185mm
Wheel head rapid approach and withdrawal: 100mm
Wheel feed per turn of cross feed hand wheel: 1mm
Per grad. Of cross feed hand wheel: 0.005mm
Grinding wheel
Spindle speed ( 2 steps ): 740 / 890 r/min
Peripheral speed: 25.6-35 m/sec
Wheel size: ( O.D. 舲ith ?Bore ) ф900 ?32 ?ф305mm
Table
Table traverse per turn of hand wheel: 5.88mm (coarse) / 1.68mm (fine)
Table swivel ( taper 18/100 ): 5? Table swivel per grad of scale ( taper 1:50 ): 10′
Overall capacity of motor: 9.82kw
Overall dimension (L ?W ?H): 4166 ?2037 ?1584mm
Weight: 6200kg
Working accuracy:
ovality 0.005
cylindricity 0.01
roughness Ra 0.32
Main accessories:
Jaw chuck 2 pcs
Wheel dresser 1 set
Steady rest 1 set
Wheel balancing stand 1 set
Leveling wedge 1 set
Wheel adaptor 2sets (one on machine)
Driving dog 1 set
Grinding wheel 2sets (one on machine)
Vertical aligning stand 1 set
Horizontal aligning stand 1 set




Item MQ8260A/2000
Max. work swing diameter ?Max. work length: ф580?000mm
Work diameter ground with steady rest: ф50-ф120mm
Throw of crankshaft: 120mm
Max. work length: 1800mm
2000mm
Max. work weight: 150kg
Headstock
Center height: 300mm
Work speed ( 3 steps ): 30/45/65/100 r/min
Wheel head:
Max. cross movement: 185mm
Wheel head rapid approach and withdrawal: 100mm
Wheel feed per turn of cross feed hand wheel: 1mm
Per grad. Of cross feed hand wheel: 0.005mm
Grinding wheel
Spindle speed ( 2 steps ): 740/ 890 r/min
Peripheral speed: 25.6-35 m/sec
Wheel size: ( O.D. 舲ith ?Bore ) ф900 ?32 ?ф305mm
Table
Table traverse per turn of hand wheel: 5.88mm (coarse) / 1.68mm (fine)
Table swivel ( taper 18/100 ): 5? Table swivel per grad of scale ( taper 1:50 ): 10′
Overall capacity of motor: 11.12kw
Overall dimension (L ?W ?H): 4900 ?2037?1584mm
Weight: 7000kg
Working accuracy:
ovality 0.005
cylindricity 0.01
roughness Ra 0.32
Main accessories:
Jaw chuck 2 pcs
Wheel dresser 1 set
Steady rest 1 set
Wheel balancing stand 1 set
Leveling wedge 1 set
Wheel adaptor 2sets (one on machine)
Driving dog 1 set
Grinding wheel 2sets (one on machine)
Vertical aligning stand 1 set
Horizontal aligning stand 1 set



Item MQ8260C/1600
Max. work swing diameter ?Max. work length: ф600?600mm
Work diameter ground with steady rest: ф30-ф100mm
Throw of crankshaft: 110mm
Max. work length: 1400mm
1600mm
Max. work weight: 120kg
Headstock
Center height: 300mm
Work speed ( 3 steps ): 25/45/85 r/min
Wheel head:
Max. cross movement: 185mm
Wheel head rapid approach and withdrawal: 100mm
Wheel feed per turn of cross feed hand wheel: 1mm
Per grad. Of cross feed hand wheel: 0.005mm
Grinding wheel
Spindle speed ( 2 steps ): 740/ 890 r/min
Peripheral speed: 25.6-35 m/sec
Wheel size: ( O.D. 舲ith ?Bore ) ф900 ?32 ?ф305mm
Table
Table traverse per turn of hand wheel: 5.88mm (coarse) / 1.68mm (fine)
Table swivel ( taper 18/100 ):
Table swivel per grad of scale ( taper 1:50 ):
Overall capacity of motor: 9.82kw
Overall dimension (L ?W ?H): 4166 ?2037?1584mm
Weight: 6000kg
Working accuracy:
ovality 0.005
cylindricity 0.01
roughness Ra 0.32
Main accessories:
Jaw chuck 2 pcs
Wheel dresser 1 set
Steady rest 1set
Wheel balancing stand 1 set
Leveling wedge 1 set
Wheel adaptor 2sets (one on machine)
Driving dog 1 set
Grinding wheel 2sets (one on machine)
Vertical aligning stand 1 set
Horizontal aligning stand 1 set