Crankshaft Grinder MQ8260B |
Crankshaft Grinding Machine
-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 mis-operation whether in adjustment or in the process grinding.
-Working Accuracy: Roundness 5um Surface roughness Ra0.32um
Remark: MQ8260B/6, the worktable consists of upper and lower parts, and the upper parts having the inclined worktable-surface at 10°
Main Specifications
| Model | MQ8260B | 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.gring length (clamped by 3-jaw chuck) | 1300mm | |
| Max.gring length (clamped by centers) | 1600mm | |
| Max.workpiece weight | 120kg | |
| Center height | 300mm | |
| Work-head spindle speed(three steps) | 25,50,100r/min | |
| Wheel-head spindle speed | 760r/min | |
| Max.wheel-head travel along lead screw | 200mm | |
| Wheel-head displacement per rev.of feed hand-wheel | 1mm | |
| Wheel-head displacement per div.of feed hand-wheel | 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 | 9.45Kw | 10.5Kw |
| Machine weight | 6700kg | |
| Overall dimensions (L*W*H) | 4000*2100*1600mm | |
Standard Accessories
Coolant tank, Left & right chuck (1 set each), Wheel dresser, End-face dresser, Vertical aligning plate, Horizontal aligning plate, Levelling wedge(11 sets), Steady rest.
Optional Accessories
Suspension-type measuring Instrument
Correcting device
Wheel balancing stand
