The main difference between an electric grain grinder and a regular grinder is the source of power and how it is used.

1. Electric grain grinders use electricity as the power source, while ordinary grinders usually require manual operation. Electric grain grinders often feature electric motors that can be plugged in or battery powered, providing greater grinding power and efficiency. In comparison, ordinary grinders require the user to manually turn the grinding parts, which requires more physical effort and time.

2. Electric grain grinders usually have more features and adjustment options. They can meet different grinding needs by adjusting grinding time, speed and grinding degree. Some electric grain grinders can also grind different types of grains such as wheat, rice, corn, etc. according to the user's choice. Ordinary grinders usually only have basic grinding functions and cannot make detailed adjustments.

3. Electric grain grinders are generally more suitable for commercial or large-scale use because they can complete the grinding task more quickly and efficiently. Ordinary grinders are more suitable for personal home use because they are simple, portable, and do not require an additional power supply.

Electric grain grinders offer more power, more features, and adjustment options than regular grinders, making them suitable for commercial and large-scale use. Ordinary grinders are suitable for personal home use and are simpler and more portable.