Constant performs superiority not only on heavy cutting but also on mating parts that requires smooth surface. Its 45 degrees base makes easy to access and easy for chips removal.
Constant base has special ribs structure formed like a tube that has superb rigidity and stable accuracy. Special uni- body channel box way at X axis provides the turret a strong support (Patent Pending). Head stock with double walls structure gives spindle with heavier loading. These high rigidity machine structures assures high accuracy, better surface finish, longer tool life, and longer machine life.
Constant Machine Specification
Model | Constant 375B | Constant 375C | Constant 375D | Constant 390B | Constant 390D | ||
Capacity | Swing Over Bed | mm | 650 | 650 | 650 | 800 | 800 |
Swing Over Saddle | mm | 500 | 500 | 500 | 500 | 500 | |
Max.TurnableO.D. | mm | 500 (400 VDI) | 500 (400 VDI) | 500 (400 VDI) | 600 | 600 | |
Max. Turnable Length | mm | 750 | 1000 | 1250 | 750 | 1250 | |
Bar Capacity | mm | 75 | 75 | 75 | 90 | 90 | |
Spindle | Chuck Size | inch | 10”(12′) | 10”(12′) | 10”(12′) | 15″(18″) | 15″(18″) |
Spindle Speed | rpm | 3500 | 3500 | 3500 | 2500 | 2500 | |
Spindle Nose | ISO A2-8 | ISO A2-8 | ISO A2-8 | ISO A2-11 | ISO A2-11 | ||
Spindle Motor | KW | 11/15 | 11/15 | 11/15 | 22/26 | 22/26 | |
Frontal Bearing | mm | 130 | 130 | 130 | |||
Turret | Tool Station | 12 | 12 | 12 | 12 | 12 | |
O.D. Tool Holder | mm | 25*25 | 25*25 | 25*25 | 32*32 | 32*32 | |
I.D. Tool Holder | mm | 40 | 40 | 40 | 50 | 50 | |
Station to Station Time | sec | 0.5(0.3) | 0.5(0.3) | 0.5(0.3) | 0.5(0.3) | 0.5(0.3) | |
Drive | Hydraulic (Servo) | Hydraulic (Servo) | Hydraulic (Servo) | Hydraulic (Servo) | Hydraulic (Servo) | ||
Travel | X Axis Travel | mm | 245+20/ 270+20(VDI) |
245+20/ 270+20(VDI) |
245+20/ 270+20(VDI) |
360+25 | 360+25 |
Z Axis Travel | mm | 770 | 1070 | 1270 | 770 | 1270 | |
X/Z Rapid | m/min | 20/20 | 20/20 | 20/20 | 20/20 | 20/20 | |
Least Input | mm | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | |
X/Z Servo Motor | kw | 3/3 | 3/3 | 3/3 | 4/4 | 4/4 | |
Accuracy | Positioning Accuracy | mm | ±0.005/1000 | ±0.005/1000 | ±0.005/1000 | ±0.005/1000 | ±0.005/1000 |
Repeatability Accuracy | mm | ±0.003/1000 | ±0.003/1000 | ±0.003/1000 | ±0.003/1000 | ±0.003/1000 | |
Tail Stock | Quill Tapper | mm | MT#5 | MT#5 | MT#5 | MT#6 | MT#6 |
Max. Travel | mm | 650 | 900 | 1150 | 800 | 1300 | |
Quill Diameter | mm | 80 | 80 | 80 | 110 | 110 | |
Quill Travel | 100 | 100 | 100 | 130 | 130 | ||
Coolant | Coolant Tank Capacity | Litre | 220 | 220 | 220 | 250 | 250 |
Coolant Motor | HP | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | |
Weight and Size | Weight | kgs | 6,200 | 6,500 | 6,800 | 7,500 | 8,500 |
L*W*H | mm | 3500*1850*2200 | 3750*1850*2200 | 4000*1850*2200 | 4000*2310*2000 | 4600*2310*2000 |