NAME: Crankshaft Grinding Machine
MODEL: MQ8260B/6
To introduce: Model MQ8260/B crankshaft is simple in construction, easy in operation and wide in application; suitable for grinding the crankshaft pins and journals. It can also be used as cylindrical grinder.
 
--- Left and right chucks are crisscross and adjustable .
--- Workpiece is held by centers or by chucks driven by warhead motor, and fed by hand for grinding
--- The machine is controlled by mechanical , electric and hydraulic means; operated mainly by hand.
--- The worktable consists of upper and lower parts, and the upper part having the inclined worktable-surface at 10 degree.
--- Longitudinal worktable travel is realized by manual-drive or motor-drive, with the motor-drive for jump displacement or adjustment.
--- Max. adjustable amount of left and right chucks is 110mm in vertical direction.
--- Workpiece , wheel, worktable , coolant pump and oil pump are driven by their individual motors.
--- Worktable and wheelhead have the hydraulic and electric interlocking mechanism, ensuring the safety even if misoperation whether in sdjustment or in the process grinding. The wheelhead is equipped with the reliable protective guard. The coolant guard and the bed ways guard is stainless steel. The wheel balancing stand adopt new static wheel balancing stand .
 
Working Accuracy:   Roundess 5um     Surface roughness Ra0.32um
Main Accessories: Coolant tank ( 1 set),  Left& right chuck ( 1 set each), Wheel dresser(1 set), End-face dresser ( 1 set), Vertical aligning plate ( 1 set) , Horizontal aligning plate( 1 set) , Levelling wedge ( 11 sets) , Steady rest ( 1 set)
Optional Accessories:   Suspension-type measuring Instrument ( 1 set) , Correcting device( 1 set) , Wheel balancing stand  (1 set) 

Main specification: 

Model MQ8260B/6
Max.Swing dia. Over table 580mm
Max. crankpin throw 110mm
Grinding diameter supported by steady-rest 30-100mm
Grinding cylindrical diameter 30-200mm
Max. grinding length ( clamped by 3-jaw chuck) 1300mm
Max. grinding length (clamped by centers) 1600mm
Max. workpiece weight 120Kg
Center height 300mm
Workhead spindle speed( three steps) 25,50,100r/min
Wheelhead spindle speed 760r/min
Max.wheelhead travel along leadscrew 200mm
Wheelhead displacement per rev. of feed handwheel 1mm
Wheelhead displacement per div. of feed handwheel 0.005mm
Rapid wheelhead advance /withdrawal 100mm
Max.longitudinal worktable travel 1600mm
Oil –pump flow-rate 11ml/r
Oil-pump pressure 6.3Map
Coolant pump flow-rate 50L/min
Total motor power 10.5Kw
Machine weight 6700kg
Overall dimensions ( LxWxH) 4000x2100x1600mm

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