If you own a rice mill or are planning to buy one, you have probably come across two types of milling rollers — the Emery Stone and the Rubber Roller. Both are used to remove the husk from paddy, but they work differently and are suited for different needs.
In this guide, we will explain the difference between the two so you can make the right choice for your rice mill.
What is an Emery Stone?
An emery stone is a abrasive cylindrical roller made from a mixture of emery (corundum) and other binding materials. It works by abrading the husk off the paddy grain through friction as the grain passes through the milling chamber.
Best for:
- Traditional rice mills
- Areas where rubber rollers are hard to find or expensive
- Millers who prefer a low cost option
- Processing harder varieties of paddy
Key advantages:
- Lower initial cost
- Widely available across India
- Durable and long lasting
- Works well with most paddy varieties
Key disadvantages:
- Higher grain breakage compared to rubber rollers
- Produces more heat during milling
- Requires more frequent adjustment
- Output rice may have more bran on the surface
What is a Rubber Roller?
A rubber roller is a cylindrical roller made from high quality rubber. It works by squeezing and rolling the paddy between two rubber surfaces to remove the husk, resulting in much less damage to the grain.
Best for:
- Modern commercial rice mills
- Millers who want high quality output
- Processing fragile or premium rice varieties
- Large scale rice processing operations
Key advantages:
- Much lower grain breakage — more whole grains
- Produces less heat during milling
- Better quality output rice — cleaner and shinier
- Suitable for fragile premium rice varieties
- Higher milling efficiency
Key disadvantages:
- Higher cost than emery stones
- Needs to be replaced more frequently
- Requires a specific type of rice huller machine
Emery Stone vs Rubber Roller – Quick Comparison
Feature Emery Stone Rubber Roller Cost Lower Higher Grain Breakage Higher Much Lower Output Quality Good Excellent Heat Generated More Less Durability Very High Medium Best For Traditional Mills Modern Commercial Mills Replacement Frequency Low Medium to High
Which One Should You Choose?
Choose an Emery Stone if:
- You have a small or traditional rice mill
- You are on a tight budget
- You process harder paddy varieties
- Rubber rollers are not easily available in your area
Choose a Rubber Roller if:
- You run a modern commercial rice mill
- You want the best possible output quality
- You process premium or fragile rice varieties
- Reducing grain breakage is a priority for your business
Our Recommendation
For most small to medium rice mills in India, emery stones are a reliable and cost effective choice. However, if you are running a commercial operation and want to maximise the quality and value of your output rice, rubber rollers are worth the investment.
At Metal Trade India, we supply both emery stones and rubber rollers for all popular rice mill models including 6N40, 6N70, N110 and more. Contact us for the best price and expert advice.
📞 Call / WhatsApp: +91 7003660189 🌐 Visit: www.metaltradeindia.com