Taiwan Shuncheng adopts CNC inner and outer diameter synchronous grinding machines and CNC inner diameter grinding machines for processing and production. The pre pressure value of each ejector pin is the same, and after the running in period, the ejector pin bearing clearance is perfectly and tightly matched, providing a high-speed and high-precision turning environment with exquisite performance. There is also a unique oil nozzle design that can be replaced and maintained without disassembly. It is waterproof, and daily use of SKF lubricating oil can extend the service life of ejector pins, which is up to three times longer than that of ordinary ejector pins without oil change.