A continuous hammer mill for grinding dry grain, herbs and spices to fine powder in small production runs.
Amazon $588.97The CGOLDENWALL CGO-20 Hammer Mill rates 3.0 among feed and hammer mills electric grain mills; the BOSBAK 2-in-1 Grain Mill rates 3.0 among commercial disc mills ones. The BOSBAK 2-in-1 Grain Mill costs $398.98 less ($189.99 vs $588.97).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

A smaller wet-and-dry disc mill for soy milk, rice batter and feed. It publishes no output figure or warranty.
Amazon $189.99Scores side by side
These two sit in different class classes (feed and hammer mills and commercial disc mills), and each is scored against the reference points for its own class, so a rating says how well each does among its own class peers. How we rank explains each factor.
| Factor weight | CGOLDENWALL CGO-20 Hammer Mill | BOSBAK 2-in-1 Grain Mill |
|---|---|---|
| Overall rating | 3.0/5 | 3.0/5 |
| Value 20% | 29 $29.45 per 100 W ($588.97, 2,000 W) | 63 $12.67 per 100 W ($189.99, 1,500 W) |
| Output 25% | 55 up to 44 lb per hour (maker claim) | 0 output not published, scored as zero |
| Motor 10% | 82 2,000 W motor | 70 1,500 W motor |
| Grind control 15% | 100 6 interchangeable sieves | 100 stepless fineness knob |
| Versatility 10% | 0 dry grain only | 70 dry grain plus beans and legumes, wet grinding |
| Warranty 20% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| CGOLDENWALL CGO-20 Hammer Mill | BOSBAK 2-in-1 Grain Mill | |
|---|---|---|
| Milling | ||
| Milling type | Hammer and screen | Disc |
| Motor power | 2,000 W | 1,500 W |
| Speed | 2,840 rpm | - |
| Claimed output | 44 lb/hr | - |
| Fineness control | 6 sieves | Stepless knob |
| What it grinds | ||
| Beans and legumes | - | Yes |
| Oily seeds | No | - |
| Wet grinding | No | Yes |
| Continuous feed | Yes | - |
| Build | ||
| Overheat protection | Yes | - |
| Weight | 55 lb | - |