| Shaft machining accuracy | ±0.02mm | ± 0.05mm or less |
| Symmetry between the roller skin and the axis | higher than the national standard | Comply with national standards |
| Radial runout | ≤0.15mm | ≥0.5mm |
| Bearing housing connection process | Spinning method (patented) | Welding method |
| Inner wall blasting technology | Sandblasting of the inner wall of steel pipes with a fixed size of more than 6m (patented) | Usually limited to shorter tube body or outer wall treatment |
| Inner wall spraying technology | Instant curing spraying (patented), anti-corrosion and dustproof | Traditional spraying, slow curing, average effect |
| Roller skin machining center | 3-station 4-point translation manipulator, multi-flute forming boring tool (patent), spinning riveting technology (patented), multi-tool concentric rounding process (patented) | Single station or simple manipulator, conventional boring and welding processes |
| Idler shaft machining center | Rotary double-head 6 stations, complete the processing of various forms of idler shaft at one time | Multi-process dispersion processing, low efficiency |
| Threading assembly machine | Automatic shaft threading (patented), length-to-diameter ratio i=0.0022, the first in the industry | Manual shaft threading, low efficiency |
| Press-fit center | Double-head rotary 6-station CNC solves automatic pressing problems such as elastic retaining rings | Single head or manual press-fit |
| Painting line | Automatic spraying, 5 degrees of freedom manipulator, waste heat recovery | Manual spraying, high energy consumption |
| Control system | Siemens S7-300PLC is the main station, Delta PLC is the slave station, PROFIBUS bus, MPI protocol, Ethernet, etc | Simpler PLC or relay control may be used |
| Cost per idler | Reduced by 5 yuan | Higher |
| The quality premium of a single idler | Increase by more than 10 yuan | None or lower |
| Annual production capacity (based on 1.1 million units) | The annual revenue increased by 16.5 million yuan | There is no such benefit |
