NAME: Crankshaft Grinding Machine
To introduce: Model MQ8260 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.
--- 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 misoperation whether in sdjustment or in the process grinding.
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
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
Wheelhead displacement per depressing the micro-feed button once  
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 9.45Kw
Machine weight 6700kg
Overall dimensions ( LxWxH) 4000x2100x1600mm

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