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MQ8260Bx1600 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.
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)

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

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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