Shark 640 Concrete Grinder

The Shark 640 Concrete Grinder / Polisher is a medium sized, three phase, variable speed planetary grinder / polisher designed for larger domestic and commercial projects up to 1000m2. It’s similar to the Shark™ 460 but has a larger grinding diameter of 640mm and a more powerful motor.

The Shark 640 Concrete Grinder offers 3 diamond plate holders with an easy to use “quick change” diamond tooling system.

In order to maintain a dust free environment, the Shark™ 640 also features an enhanced dust control system which includes a dust shroud and a dust connector which can be used with Sharks array of dust extraction machines.


  • E2 High Grade WD 3 phase, 10Hp motor.
  • 30 litre capacity water tank for the option of wet grinding.
  • Forward and reverse motor option.
  • Variable speed of 450-1680 rpms with a planetary drive gear box.
  • Weight is 267kg with an extra 40kg included for adjustable pressure control.
  • Ergonomically designed collapsible handle adjusts to your perfect working position.
  • Integrated LED light for low light conditions.
  • Phone holder, a USB port to charge your phone and a drink holder.
  • Includes 1 set of quick change diamonds.

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Technical Data Diamond Tooling Frequently Asked Questions

What size projects is the Shark™ S640 ideally suited for?

The S640 is a medium sized, three phase machine designed for grinding & polishing projects up to 1000m2.

Is the Shark™ S640 suitable for polishing concrete?

The S640 has been designed specifically for all aspects of concrete grinding and polishing.