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Internal and External Universal Cylindrical Grinding Machine
BG-320 BGB-320 BUG-320 BUGB-320 BG-320S BGB-320S
Performance and Feature
- With high machining precision, the integral layout of machine tool is rational, appearance is attractive, operating handles are centralized arranged and visualization, thus to make the machine easy to control and safe to operate.
- The wheel head adopts a structure of sleeve type bearing bush hydrodynamic bearing mainshafting and features high rotary precision and high rigidity.
- The feeding guideway uses antifriction & plastic-filming guideway, thus promoting the smoothness and vibration resistance of low-speed operations.
- The hydraulic drive system uses screw pump which is of smooth running and low noise.
- BGB/BUGB(seimi-automatic) grinding machines can perform plunge-cut grinding or longitudinal grinding to conduct small-lot or batch production under the control of fixed distance or automatic measuring device.
- For the BGB/BUGB(semi-automatic) grinding machines, their grinding function and action sequences of processing cycle are controlled by programmable logic controller(PLC).
Main Accessories
- Balancing mandrel
- Wheel balancing stand
- Three-jaw chuck(For universal machines Φ130mm)
- Internal grinding attachment(For universal machines)
- Wheel flange
- Coolant tank
- Stand grinding wheel dresser
Special Accessories
- Closed center rest Φ10-Φ75mm
- Open center rest Φ5-Φ50mm
- Four-jaw chuck Φ160mm
- Automatic measuring device (For semi-automatic machines)
- Magnetic coolant separator
Technical Parameters
Specifications | Units | BG-320 BGB-320 | BUG-320 BUGB-320 | BG-320S BGB-320S | |||||||
*500 *750 *1000 | |||||||||||
Height of center | mm | 180 | 180 | 180 | |||||||
Distance between centers | mm | 520 | 765 | 1050 | 520 | 765 | 1050 | 520 | 765 | 1050 | |
Maximum swiveling diameter | mm | Φ350 | Φ350 | Φ350 | |||||||
Maximum grinding length | mm | 500 | 750 | 1000 | 500 | 750 | 1000 | 500 | 750 | 1000 | |
Range of external grinding | mm | Φ5-Φ320 | Φ5-Φ320 | Φ5-Φ320 | |||||||
Range of internal grinding | mm | - | Φ16-Φ125 | - | |||||||
Maximum internal grinding depth(over 45mm) | mm | - | 160 | - | |||||||
Maximum workpiece weight between centers | kg | 50 | 50 | 50 | |||||||
Grinding wheel | OD.*W*ID. | mm | 400*(32-50)*203 | ||||||||
Maximum linear speed | m/s | 35 | 35 | 50 | |||||||
Swiveling angle of worktable | Clockwise | ° | 9 | 8 | 3 | 9 | 8 | 3 | 9 | 8 | 3 |
Counter clockwise | ° | 9 | 8 | 7 | 9 | 8 | 7 | 9 | 8 | 7 | |
Taper hole of spindle | Workhead |
| Morse4 | Morse4 | Morse4 | ||||||
Tailstock |
| Morse4 | Morse4 | Morse4 | |||||||
Total power | Kw | 6 | 6.6 | 6 | |||||||
Net weight | kg | 2500 | 3000 | 3500 | 2500 | 3000 | 3500 | 2500 | 3000 | 3500 | |
Gross weight | kg | 3100 | 3600 | 4100 | 3100 | 3600 | 4100 | 3100 | 3600 | 4100 | |
Overall Dimensions | Length | mm | 2800 | 2900 | 3800 | 2800 | 2900 | 3800 | 2800 | 2900 | 3800 |
Width | mm | 2200 | 2200 | 2200 | |||||||
Height | mm | 2200 | 2200 | 2200 | |||||||
Working Accuracy
Inspection content | Sketch oftest-piece and machining condition | Inspection item | Units | BG-320 BGB-320 BG-320S BGB-320S | BUG-320 BUGB-320 | |||||
*500 | *750 | *1000 | *500 | *750 | *1000 | |||||
Grinding accuracy of testpiece between centers | L=350 d=35 | | Roundness | mm | 0.0015 | - | 0.0015 | - | ||
L=750 d= 75 | - | 0.0025 | - | 0.0025 | ||||||
L=350 d=35 | Consistency of the diameter in longitudina section | mm | 0.005 | - | 0.005 | - | ||||
L=750 d=75 | - | 0.008 | - | 0.008 | ||||||
- | Roughness | um | Ra≤0.32 | Ra≤0.32 | ||||||
The grinding accuracy of short testpiece on chuck | L=30 d=60 | | Roundness | mm | - | 0.0025 | ||||
- | Roughness | um | - | Ra≤0.32 | ||||||
The accuracy of testpiece internal grinding on chuck | L=50 d=30 | | Roundness | mm | - | 0.0025 | ||||
L=100 d=60 | Consistency of the diameter in longitudinal section | mm | - | - | ||||||
- | 0.01 | |||||||||
- | Roughness | um | - | Ra≤0.63 | ||||||
Accuracy of testpiece plunge cut grinding | L=30 d=25 | | Consistency of batched parts diameter after grinding | Fixed distance grinding: 0.02/20 pieces | ||||||
L=30 d=40 | ||||||||||
Layout Plan(Unit: mm)
Max. grinding length | A | B | C |
500 | 1500 | 1800 | 2400 |
750 | 2100 | 2290 | 3150 |
1000 | 2500 | 2800 | 3900 |
The foundation depth is determined by the property of soil and should not be less than 400mm.
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