MQ8260B & MQ8260B/6 crankshaft are simple in construction, easy in operation and wide in application; Suitable for grinding crankshaft pins and journals. It can also be used as cylindrical grinder.
The machine is controlled by mechanical, electric and hydraulic means; Operated mainly by hand.
Left right chucks are crisscross and adjustable
Workpiece is held by centers or by chucks, driven by workhead motor, and feed by hand for grinding.
The worktable consists of upper and lower parts, and upper part having the inclined worktable-surface at 10° ( only for MQ8260B/6)
Longitudinal worktable travel is realized by manual-drive or motor-drive, with the motor drive for jump displacement or adjustment.
The max. Wheel, worktable, coolant pump and oil pump are driven by their individual motors.
Worktable and wheelhead have the hydraculic and electric interlocking mechanism, ensuring the safely even if misoperation whether in adjustment or in the process of
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.
Model |
MQ8260B/6 × 1600 |
MQ8260B × 1600 |
MQ8260B/2000 |
Max. work diameter × Max. length |
Φ 580× 1600 mm |
Φ 580× 1600 mm |
Φ 580× 2000 mm |
Worktable |
oblique angle table 10° |
Flat worktable |
Flat worktable |
Capacity |
Max. swing over table |
Φ 580 m |
Work diameter ground with steady rest |
Φ 30-100 mm |
Grinding cylindrical diameter |
Φ 30-200 mm |
Throw of crankshaft |
110 mm |
Max. work length ground in 3 jaw chuck |
1300 mm |
1300 mm |
1700mm |
Max. work length ground between centers |
1600 mm |
1600 mm |
2000mm |
Max. work weight |
120 kg |
Headstock |
Center height |
300 mm |
Work speed ( three steps ) |
25, 50, 100 r/min |
wheelhead |
Max. cross movement |
200 mm |
Wheelhead rapid approach & withdrawal |
100 mm |
Wheelhead feed per turn of cross feed handwheel |
1 mm |
Wheel feed per grad of cross feed handwheel |
0.005 mm |
Grinding wheel |
Wheel spindle speed |
760 rpm |
Wheel size |
Φ 900× 32× Φ 305 mm / Φ 900× 22× Φ 305 mm |
Overall capacity of motor |
9.45 kw |
Overall dimensions (L× W× H) |
4000× 2100× 1584 mm |
4650x2100x1584mm |
Packing dimensions (L× W× H) |
4350× 2250× 2000 mm |
5000× 2250× 2000 mm |
Weight |
6700 kg |
6700kg |
7200kg |
Working accuracy |
Ovality new standard |
0.005mm |
Cylindricity |
0.01mm |
Roughness |
Ra 0.32 |
SJMC Corporation, founded in 1997, is a national foreign-trade company combined with production and technology which is wellknown in supplying the service of Overall Mechanical processing solution in the filed.
SJMC' products are widely used in automotive, manufacturing, aerospace and defense, construction and farming equipments, oil and energy field, mold and die industries, etc. From the beginning, our company made it as our mission to provide machines of good quality at competitive price to all customers. Rely on good relationships with many famous manufactories and final assembly these inputed products in our house to realize our concept of reducing the cost.
SJMC Machines involve all kinds of machine tools and motor maintenance equipments, e. G. Vertical and horizontal machining centers, lathe, milling machine, drilling machine, boring machine, grinder, measuring equipments etc. Which offer users high throughput, high quality, reliable solution and cost effective to production machining operations.
SJMC has developed successfully of its own corporate philosophy of High quality, Cost effective, first-rate service and has underpinned the development of world's manufacturing by offering machine tools that satisfy manufacturing makers. These years, SJMC has set up close business co-operation with many companies in the world through good services and mutual trust.
Choosing SJMC as your machining partner, you are free to imagine a more productive, cost effective solution and we assure you that we can together to make your dream come true.
