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Automotive - ROBBI
Hydraulic surface grinding machines models ALPHA
A wide line of high-precision machines for cylinder block and head surfaces grinding and milling. Coloring in to any color at the customer's request.
TECHNICAL FEATURES
- Hydraulic table movement with variable speed.
- Spindle is supported by adjustable tapered roller bearings.
- Transmission motor to spindle by special belt.
- Separated cooling installation with tank.
 
Segmented grinding wheel with milling bracket for milling aluminum cylinder heads. Dial indicator for control cylinder head.
Automatic grinding wheel feed device.
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Main control device for table moving
1. Knob for manual-automatic table traverse reverse selection.
2. Handle with electric control for manual set-ups.
3. Lever for manual-automatic table traverse reverse control.
4. Knob for stepless table feed speed adjustment.
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Pushbutton panel version E: Working cycle with automatic grinding wheel feed and stop to size.
1. Fast approach.
2. Automatic intermittent feed connected to the inversion table movement.
3. Stop to pre-set stroke with finish cycle.
4. Table reciprocating longitudinal movement.
5. Fast automatic backing with machine stop.
6. Fast backing.
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TECHNICAL SPECIFICATIONS
| PARAMETERS |
ALPHA 10 |
ALPHA 12 |
ALPHA 15 |
ALPHA 17 |
ALPHA 18 |
ALPHA 23 |
ALPHA 25 |
ALPHA 28 |
| Max. grinding lenght |
mm |
950 |
1200 |
1300 |
1650 |
1600 |
2100 |
2400 |
2600 |
| Max. grinding width |
mm |
320 |
360 |
410 |
410 |
470 |
470 |
470 |
470 |
| Working surface of table |
mm |
900x250 |
1200x300 |
1300x360 |
1500x400 |
1400x400 |
1900x400 |
2300x450 |
2500x500 |
| Max. long table travel |
mm |
1120 |
1380 |
1500 |
1850 |
1800 |
2300 |
2400 |
2700 |
| Automatic table feed per minute |
mm/ min |
0-3000 |
0-5000 |
0-3000 |
0-3000 |
0-3000 |
0-3000 |
0-3000 |
0-3000 |
| Distance centre of spindle to column guides |
mm |
290 |
310 |
420 |
420 |
480 |
480 |
480 |
480 |
| Min. height table to grinding wheel |
mm |
180 |
130 |
150 |
200 |
330 |
330 |
330 |
330 |
| Max. height table to grinding wheel |
mm |
550 |
750 |
850 |
950 |
1200 |
1200 |
1200 |
1200 |
| Vertical automatic wheel head feed |
mm |
320 |
620 |
700 |
750 |
870 |
870 |
870 |
870 |
| Diameter of segmented grinding wheel |
mm |
330 |
370 |
420 |
420 |
480 |
480 |
480 |
480 |
| Max. surface milling width |
mm |
320 |
350 |
400 |
400 |
450 |
450 |
450 |
450 |
| Speed of rotation of grinding wheel |
rpm |
700-1400 |
700-1400 |
180-1400 |
180-1400 |
180-1400 |
180-1400 |
180-1400 |
180-1400 |
| Speed of rotation of milling head |
rpm |
180-360 |
180-360 |
180-360 |
180-360 |
180-360 |
180-360 |
180-360 |
180-360 |
| Main spindle rotation motor |
kW |
5 |
5 |
6,5 |
6,5 |
6,5 |
6,5 |
6,5 |
6,5 |
| Spindle rotation motor slow |
kW |
1,3-0,8 |
1,3-0,8 |
1,3-0,8 |
1,3-0,8 |
1,3-0,8 |
1,3-0,8 |
1,3-0,8 |
1,3-0,8 |
| Wheelhead feed motor |
kW |
0,75 |
0,75 |
0,75 |
0,75 |
0,75 |
0,75 |
0,75 |
0,75 |
| Hydraulic pump motor |
kW |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| Cooling pump motor |
kW |
0,12 |
0,12 |
0,12 |
0,12 |
0,25 |
0,25 |
0,25 |
0,25 |
| Dimensions: lenght x width |
mm |
1900x1370 |
2000x1470 |
2300x1570 |
2600x1570 |
3200x1700 |
3600x1700 |
4100x1870 |
4500x1870 |
| Machine height |
mm |
2050 |
2050 |
2050 |
2050 |
2050 |
2050 |
2050 |
2050 |
| Workspace required: lenght x width |
mm |
4380x1370 |
4380x1370 |
4380x1370 |
5380x1370 |
5380x1370 |
6380x1370 |
5380x1370 |
6380x1370 |
| Dimensions of shipping box |
m |
2,10x1,18
x1,96 |
2,30x1,31
x2,24 |
2,52x1,58
x2,31 |
3,28x1,56
x2,26 |
2,89x1,96
x2,62 |
3,88x1,96
x2,62 |
4,3x2,1
x2,62 |
4,88x2,1
x2,62 |
| Approx. net weight |
kg |
1000 |
1700 |
2100 |
2800 |
3100 |
3700 |
4100 |
4900 |
| Shipping weight approx. |
kg |
1200 |
1950 |
2450 |
3150 |
3500 |
4100 |
4700 |
5300 |
STANDARD EQUIPMENT
- Locking clamps with bolts
- Set of service spanners
- Operating manual
EXTRA EQUIPMENT
- Coolant magnet cleaner with tank and pump
- Arbor for wheel balancing
- Balancing stand for grinding wheels and other rotating parts, blade type.
- Powered rotary table for grinding flywheels and clutch pressure plates with cones and spacers clamps (to be used with powered rotary table)
- Wheel spindle for cup wheel diam. 125 and 150 mm.
- Cup wheel mm. 125
- Segmented grinding wheel
- Tool-plate with one CBN for cast iron and one PCD for aluminium
- Magnetic chuck for industrial grinding
- Powered up and down for wheelhead
- Wheel speed rotation r.p.m. 180-360-700-1400
- Automatic wheel feed and stop to size
- Protections mechanical and electrical in conformity with safety CE rules.
- Couple swinging supports for fast head clamping.
- Universal fixture for clamping V-cylinder blocks and heads, with level.
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