Crank shaft grinding machine MQ8260A,MQ8260C

Crank shaft grinding machine MQ8260A,MQ8260C

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Main features:

1. Three different work speeds areobtainable by making use of the belts in the headstock.

2. Cross chucks are used in theheadstock and tailstock.

3. Friction coupling is used inthe headstock transmission chain for its easy adjustment.

4. Table traverse is operatedeither by hand or by power.

5. Wheelhead rapid approach andwithdrawal is effected through hydraulic means.

6. The wheel spindle being of 80mmin diameter has good rigidity and strength.

7. Use is made of roller ways forwheelhead movement.

8. The bed ways and wheelhead arelubricated in an automatic cycle by means of the oil pump.

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Description

Differences of MQ8260A and MQ8260C:

1. Table surface

Model A —a flat table surface

Model C—-an oblique table surface (10 degree),So model C leads to an easy flow of coolant liquid and fast removal of steel chips.

2. Table structure

Model A—one-layer table, good rigidity, but more time when adjusting taper

Model C—double-layer table, less rigidity, but less time when adjusting taper

3. Chuck structure

Model A—dovetail type chucks on headstock and tailstock

Model C—flat type chucks on headstock and tailstock

 

Model UMQ8260A UMQ8260AX18 UMQ8260AX20 UMQ8260C UMQ8260CX18
Max. Work swing diameter × Max work length 580×1600mm 580×1800mm 580×2000mm 600×1600mm 600×1800mm
Capacity
Max. Swing over table 580mm 580mm 580mm 600mm 600
Work diameter ground with steady rest 30~100mm 30~100mm 50~120mm 30~100mm 30~110
Throw of crankshaft        110mm        110mm        120mm        110mm 110
Max. work length ground
In 3-jaw chuck 1400mm 1600mm 1800mm 1400mm 1600
Between centers 1600mm 1800mm 2000mm 1600mm 1800
Max. work weight 120kg 120kg 150kg 120kg 120
Work head
Center height 300mm 300mm 300mm 300mm 300
Work speed 25,45,95r/min 25,45,95r/min 30,45,65,100r/min 25、45、95r/min 25、45、95r/min
Wheel head
Max. Cross movement 185mm 185mm 185mm 185mm(85mm Opted) 185mm(85mm Opted)
Wheel head rapid approach and withdrawal 100mm 100mm 100mm 100mm(200mm Opted) 200mm
Wheel feed per turnoff cross fed hand wheel 1mm 1mm 1mm 1mm 1mm
 Per grad. of cross feed hand wheel 0.005mm 0.005mm 0.005mm 0.005mm 0.005mm
Grinding wheel
Wheel spindle speed (2steps) 740.890r/min 740.890r/min 740.890r/min 740.890r/min 740.890r/min
Wheel peripheral speed 25.6-35m/sec 25.6-35m/sec 25.6-35m/sec 25.6-35m/sec 25.6-35m/sec
Wheel size (O. D .× width ×Bore) Φ900×32×Φ305mm Φ900×32×Φ305mm Φ900×32×Φ305mm Φ900×32×Φ305mm Φ900×32×Φ305mm
Table
Table traverse per turn of hand wheel coarse 5.88mm 5.88mm 5.88mm 5.88mm 5.88mm
Fine 1.68mm 1.68mm 1.68mm 1.68mm 1.68mm
Table Swivel (taper 18/100) 5° 5° 5°
Table Swivel per grad of scale (taper 1:50) 10′ 10′ 10′
Overall capacity of motors 9.82kw 9.82kw 11.12kw 9.82kw 9.82kw
Overall dimensions (L×W×H) 4166×2037×1584 4166×2037×1584 4900×2037×1584 4166×2037×1584 4166×2037×1584
Weight Approx. 6000kg Approx. 6000kg Approx. 6000kg Approx . 6000kg Approx . 6000kg