Large-Size
Our tapered roller bearing grinding and superfinishing line utilizes modern and advanced technology, including dynamic balancing system, acoustic emission monitoring system and in-process gauge system. Stabilized loading and conveyor system have high efficiency and accurately, reduced cost, and promoted quality. All control system and machine components are supplied from internationally famous brands, allowing us to guarantee a high precision, high efficiency and long service life.
The grinding and superfinishing line is suitable for large-size tapered roller bearing, cylindrical roller bearing and needle roller bearing that have a size of ID= φ100-φ220mm and OD= φ150-φ300mm.
Features and Benefits
1. The grinding speed is set on the display screen. The raceway grinding machine provides single-point straight line dressing, hyperbolic curve dressing and logarithmic curve dressing for inner ring raceway and outer ring raceway, which can dress the large single radius contour, multi-radii contour, hyperbola and logarithmic curve, and crowning amount 0~40 micron adjustable.
2. Constant speed grinding, with clamping electric current at 0.1~2.0A adjustable, with "High-Low" switch.
3. The superfinishing line provides two superfinishing methods: small-oscillation and large-reciprocation with small-oscillation, while keeping the original grinding crown shape. The oilstone pressure, oscillation frequency and workpiece rotational speed can be set on the display screen. The large-reciprocation system is driven by servo motor.
4. Full enclosure with three sliding doors, electrical cabinet has an IP54 protection level sealed structure and is equipped with a constant-temperature air conditioner.
5. The modular kit system enables customer-specific designs.
Configurations
3MZ2120A Auto inner ring raceway grinding machine for TRB and CRB
3MZ2020A Auto ID grinding machine for TRB and CRB
3MZ2220A Auto inner ring lip grinding machine for TRB and CRB
3MZ3320A Auto inner ring raceway superfinishing machine for TRB and CRB
3MZ3720A Auto inner ring lip superfinishing machine for TRB and CRB (option)
3MZ2130A Auto OD grinding machine for TRB and CRB (option)
3MZ2330A Auto outer ring raceway grinding machine for TRB and CRB
3MZ3430A Auto outer ring raceway superfinishing machine for TRB and CRB
| No. | ||||||||
| Machine name | Auto inner ring raceway grinding machine for TRB and CRB | Auto ID grinding machine for TRB and CRB | Auto inner ring lip grinding machine for TRB and CRB | Auto inner ring raceway superfinishing machine for TRB and CRB | Auto inner ring lip superfinishing machine for TRB and CRB | Auto OD grinding machine for TRB and CRB | Auto outer ring raceway grinding machine for TRB and CRB | Auto outer ring raceway superfinishing machine for TRB and CRB |
| Machine model | 3MZ2120A | 3MZ2020A | 3MZ2220A | 3MZ3320A | 3MZ3720A | 3MZ2130A | 3MZ2330A | 3MZ3430A |
| Processing range (mm) | ID=Φ100-220 B=20-80 α=0 ° -25 ° | ID=Φ100-220 B=20-80 | ID=Φ100-220 B=20-80 α=0 ° -25 ° | ID=Φ100-220 B=20-80 α=0 ° -25 ° | ID=Φ100-220 B=20-80 α=0 ° -25 ° | OD=Φ150-300 B=20-80 | OD=Φ150-300 B=20-80 α=0 ° -32 ° | OD=Φ150-300 B=20-80 α=0 ° -32 ° |
| Processing accuracy | P2/P4/P5/P6 | P2/P4/P5/P6 | P2/P4/P5/P6 | P2/P4/P5/P6 | P2/P4/P5/P6 | P2/P4/P5/P6 | P2/P4/P5/P6 | P2/P4/P5/P6 |
| Work station | One station | One station | One station | One station | One station | One station | One station | One station |
| Process | Support raceway grinding raceway | Support raceway grinding ID | Support raceway grinding lip | Support ID superfinishing raceway and lip | Support ID superfinishing lip | Support OD grinding OD | Support OD grinding raceway | Support OD superfinishing raceway and OD |
| Control system | PLC/CNC 4-axis | PLC/CNC 2-axis | PLC/CNC 2-axis | PLC/CNC 1-axis | PLC/CNC 1-axis | PLC/CNC 2-axis | PLC/CNC 3-axis | PLC/CNC 1-axis |
| Slide | Slides ball screw | Slides ball screw | Slides ball screw | Slides ball screw | Slides ball screw | Slides ball screw | Slides ball screw | Slides ball screw |
| Grinding spindle | Hydrodynamic spindle | Permanent magnet synchronous electric spindle | Electric spindle | / | / | Hydrodynamic spindle | Permanent magnet synchronous electric spindle | / |
| Size of grinding wheel (mm) | Ф610×B×Ф305 | Max. Ф100×B | Max. Ф250×B | / | / | Ф610×B×Ф305 | Max. Ф120×B | / |
| Speed of spindling wheel | Max. 63m/s | Max. 63m/s | Max. 63m/s | / | / | Max. 63m/s | Max. 63m/s | / |
| Spindle power | 30kw | 32kw | 8.5kw | / | / | 37kw | 32kw | / |
| Dressing system | Single-point diamond logarithmic dresser | Single-point linear dresser | Single-point linear dresser | / | / | Single-point linear dresser | Single-point diamond logarithmic dresser | / |
| Dressing slide | Slides linear motor (option) | Slides ball screw | Slides ball screw | / | / | Slides ball screw | Slides linear motor (option) | / |
| Dressing curve | Straight line, multi-radii contour, hyperbola curve and logarithmic curve | Straight line | Straight line | Straight line | Straight line, multi-radii contour, hyperbola curve and logarithmic curve | |||
| Oscillation frequency | / | / | / | 0-1200 /min | 0-1200 /min | / | / | 0-1200 /min |
| Superfinishing pressure | 0.1-0.5 MPa | 0.1-0.5 MPa | 0.1-0.5 MPa | |||||
| Hydraulic system | / | 1.6-3.0 MPa | / | / | / | 1.6-3.0 MPa | 1.6-3.0 MPa | 1.6-3.0 MPa |
| Pneumatic system | 0.3-0.5 MPa | 0.3-0.5 MPa | 0.3-0.5 MPa | 0.3-0.5 MPa | 0.3-0.5 MPa | 0.3-0.5 MPa | 0.3-0.5 MPa | 0.3-0.5 MPa |
| Cooling system | 0.2-0.5 MPa | 0.2-0.5 MPa | 0.2-0.5 MPa | 0.2-0.5 MPa | 0.2-0.5 MPa | 0.2-0.5 MPa | 0.2-0.5 MPa | 0.2-0.5 MPa |
| Machine power | 55KVA | 60KVA | 30KVA | 20KVA | 20KVA | 60KVA | 60KVA | 20KVA |
| Machine weight | 6500kg | 6500kg | 6500kg | 5000kg | 5000kg | 6800kg | 6500kg | 5000kg |
| Machine size (m) | 2.5 × 2.0 × 2.0 | 2.5 × 2.0 × 2.0 | 2.0 × 2.0 × 2.0 | 2.0 × 1.8 × 1.8 | 2.0 × 1.8 × 1.8 | 2.5 × 2.0 × 2.0 | 2.5 × 2.0 × 2.0 | 2.0 × 1.8 × 1.8 |
