The EMU Rolling Bearing Press Fitting Machine is a specialized equipment for the bearing mounting of railway vehicle wheel sets, which can meet the bearing pressing operations of EMU and subway. Adopting computer control, it can collect, display and print the corresponding pressing process parameters as required, and the operation process data can interact with the bearing assembly line control system. It is equipped with an open protocol interface, which can connect with the digital system and realize data transmission.
As a core equipment in railway EMU and subway maintenance workshops, the EMU Rolling Bearing Press Machine adopts an advanced proportional valve closed-loop control hydraulic system, which has higher precision and stronger anti-interference ability than servo control. It supports simultaneous automatic pressing of both ends of the wheel set and independent automatic pressing of either end, meeting the diverse needs of EMU, subway and other different operation scenarios.
This EMU bearing press fitting machine consists of a bearing press machine main unit, an electrical control system, and a hydraulic system. It is installed below ground level, with its steel rails flush with the workshop floor. The surrounding area is covered with foundation plates, whose top surfaces are level with the workshop floor.
| S/N | Item | Parameters |
| 1 | Wheelset track gauge | 1435mm |
| 2 |
Axle length |
2140~2400 mm |
| 3 |
Wheel diameter |
Ф700~960 mm |
| 4 |
Bearing dimension |
Inner Diameter φ120mm、φ130mm |
| 5 |
Wheelset Weight |
﹤3000 kg |
| 6 |
Maximum Press-fitting Force |
600 kN |
| 7 |
Max. Stroke of Single Hydraulic Oil Cylinder |
400 mm |
| 8 |
Pressure Display Resolution |
0.1 kN |
| 9 |
Pressure Display Error |
≤1% |
| 10 |
Displacement Detection Equivalent |
0.1 mm |
| 11 |
Bearing Pressing Speed |
0~6mm/s(adjustable) |
| 12 |
Working Rhythm |
≤5 min each wheelset |
| 13 |
Max. Pressure of Hydraulic System |
16 MPa |
| 14 |
Installed Total Power |
17.2 kw |
| 15 |
Main Unit Dimension(L×W×H) |
5000×1100×2050 mm |
| 16 |
Main Unit Weight |
5.6 t |
| 17 |
Power Supply |
AC380V±15%,50Hz |