Abrasive Whitener XPA-25

A unique whitener scratches the surface of brown rice instead of grinding it to improve the friction coefficient of the Vertical Friction Polisher in the following process. This results in a higher milling recovery rate of the whole process.

Product Features

High Milling Recovery Rate

A high milling recovery rate of over 0.5%* can be achieved, thereby raising profits.

* Achieved in our internal tests using high-quality paddy.

Innovative Milling Structure

Our machines use a unique vertical structure and rice flow resulting in uniform pressure in the grinding chamber. This prevents the starch layer from being scratched.

Optimal Residual Grain Removal

Residual grain can easily be discharged by simply moving the exhaust lever manually.

Adjustable Screen Angle

The screen can be adjusted to the optimal angle for the current load’s flow amount and material characteristics.

Compact Design

Our Abrasive Whitener requires less space than traditional horizontal machines, thanks to its innovative vertical structure.

Lower Maintenance Costs

The consumable parts are easily accessed and replaced. Whereas traditional designs require the entire abrasive stone to be replaced after it wears out, ours consists of two partitions. So only the one that wears out needs to be replaced.

Customer Stories

One of our customers operates a large rice milling plant in Philippines. Using our Abrasive Whitener and Friction Polisher machines significantly increased their milling recovery rate and their presence in the market.


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Model Name XPA-25
Input brown rice capacity t/h 2 ~ 5
Demensions Length mm 1,336
Width mm 808
Height mm 1,341
Net Weight kg 400
Height of milled rice outlet mm 1,042
Necessary Power kW Power 3-phase
200 / 220 / 380 / 420 / 460V
Motor kW 18.5
Required Air volume m3/min 12
Required static pressure kpa more than 1

* Precise capacity depends on brown rice variety and quality of input.

* We are continuously innovating. Therefore specifications and dimensions are subject to change.

Frequently Asked Questions

Answers to frequently asked questions about our rice grain drying and milling machines.

Which machine should I use to mill long grain rice?

Selecting the most suitable machine depends on the variety of long grain, drying method, and required capacity. Please feel free to contact us to confirm the necessary information and make suggestions.

How long will consumable parts keep in stock?

For each of our machines, we continue to offer consumable parts for ten years after its production is discontinued.

For Owners

Maintenance & Troubleshooting:

More Maintenance Guides


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If the form does not appear, don’t hesitate to contact us via world@yamamoto-ss.co.jp

Product Tours: See for Yourselves

Contact us, and we will schedule a tour of the dryer and rice milling machines installed nearest to your location. Please feel free to contact us even if you do not have a plan to purchase.

Free Consulting: Boost Your Profits

We have deep expertise in all areas of the rice milling business and have studied many successful operations. Contact us for a free consultation. We’ll share rice production best practices to help your team maximize profit while lowering costs.

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