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- The Rigider-8 automatic vertical grinding and polishing machine is a powerful high-capacity machine with a high-power motor installed in a sturdy welding frame. The entire machine is designed specifically for vibration free sample preparation. The machine can quickly and easily process any sample and is suitable for any working environment. Year after year, it meets the daily requirements for preparing large quantities and heavy-duty, high hardness metallographic specimens.

- Rigider-8 is currently one of the most efficient sample preparation machines in the market. Compared with other similar machines, it can hold a larger number of samples and samples of different sizes, shorten the overall sample preparation time, and improve efficiency. The grinding head speed of Rigider-8 can reach up to 300rpm/min, the pressure can reach 700N, and the working disc size can reach up to 350mm. The combination of parameters and sturdy structure makes the sample preparation efficiency very outstanding.

- The use of Rigider-8 to prepare grinding discs and sample thrusters has the advantage of variable speed. The speed of preparing the grinding disc can be increased from 50rpm to 500rpm, with one step every 10rpm; The rotational speed of the sample thruster can be increased from 50rpm to 300rpm, also every 10rpm.

- When grinding, the sample material must be removed by high-speed rotation of the grinding disc. Therefore, the high speed of 500rpm here can ensure a short preparation time。

- During precision grinding and polishing, the variable rotational speed of the grinding disc and the variable rotational speed of the sample holder mean that lower rotational speeds can be used to prepare samples for sensitive materials, or higher rotational speeds can be used to prepare samples for hard wear-resistant materials in the shortest possible time。

- Explosion proof transparent window design: The work area adopts a safe and reliable explosion-proof transparent window design. The machine cannot be started until the safety cover is closed, and the safety cover can only be opened after it has stopped running.  

- Emergency stop and electromagnetic lock device: The machine is also equipped with an emergency stop device, and all functions will immediately stop when the device is pressed. The installation of electromagnetic lock safety system on the equipment ensures safety during operation, as the cover cannot be opened.