Crankshaft grinding machine
Three different work speeds are obtainable by making use of the belts in the workhead.Cross chucks are used in the headstock
and intended for use in the automobile, tractor, diesel engine works and their repair shops to grind the journals and crankpins of crankshafts.
Three different work speeds are obtainable by making use of the belts in the workhead. Cross chucks are used in the headstock and tailstock. Friction coupling is used in the headstock transmission chain for its easy adjustment. Table traverse is operated either by hand or by power. Wheelhead rapid approach and withdrawal is effected through hydraulic means. The wheel spindle being of 80mm in diameter has good rigidity and strength. Use is made of roller ways for wheelhead movement. The bed ways and wheelhead are lubricated in an automatic cycle by means of the oil pump.
| Model | MQ8260Ax16 | MQ8260Ax18 | MQ8260Ax20 | ||
| Max. work diameter × Max. length | Φ 580× 1600mm | Φ 580× 1800mm | Φ 580× 2000mm | ||
|
Capacity |
Max. swing over table | 580 mm | |||
|
Work diameter ground with steady rest |
Φ 30-100 mm | Φ 50-120 mm | |||
| Throw of crankshaft | 110 mm | 120 mm | |||
|
Max. work length ground in 3 jaw chuck |
1400 mm | 1600 mm | 1800 mm | ||
|
M ax. work length ground between centres |
1600 mm | 1800 mm | 2000 mm | ||
| Max. work weight | 120 kg | 150 kg | |||
|
Headstock |
Centre height | 300 mm | |||
| Work speed (rpm | 25, 45, 95 | 25, 45, 65, 100 | |||
|
Wheelhead |
Max. cross movement |
185 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 | 740, 890 rpm | |||
| Wheel peripheral speed | 25.6 – 35 m/sec | ||||
| Wheel size | Φ 900x32xΦ 305 mm | ||||
|
Table |
Table traverse per turn of handwheel coast |
5.88 mm | |||
|
Table traverse per turn of handwheel fine |
1.68 mm | ||||
| Table swivel (taper 18/100 | 5° | ||||
|
Table swivel per grad of scale (taper 1: 50) |
10' | ||||
| Overall capacity of motor | 9.82 kw | 11.2 kw | |||
| Overall dimension (LxWxH) | 4166x2037x1584 mm | 4900x2037x1584mm | |||
| Weight | 6000 kg | 6200 kg | 7000 kg | ||
|
Working Accuracy |
Ovality (new standard | 0.005 | |||
| Cylindricity | 0.01 | ||||
| Roughness Ra | 0.21 | ||||