Feed Mixing + Grinding: One Machine or Two?
Every small livestock farm reaches this question sooner or later: should I buy a combined feed mixing and grinding machine, or split the budget into a hammer mill and a mixer? The honest answer is: it depends on four things — daily volume, number of species you feed, whether you mix wet or dry, and whether you plan to make pellets later. Here is how to decide.
1. The honest comparison
| Combined mixer-grinder | Separate mill + mixer | |
|---|---|---|
| Price | Lower — one motor, one frame | Higher — two motors, two frames |
| Daily capacity | 20–100 kg/day practical limit | No hard upper bound — run mill and mixer in tandem |
| Species flexibility | Medium — one mixing speed suits most feeds but not all | High — flat-mouth mixers, drum mixers and rotary mixers have different jobs |
| Wet mixing | Poor — most combined units grind dry only and blend dry only | Good — dedicated mixers handle wet silage, molasses and water |
| Reliability | One motor is a single point of failure | Mill can run alone, mixer can run alone |
| Dust | More — grinding inside the mixing chamber produces cloud | Contained — mill has a blower and bag outlet |
2. The rule of thumb by daily tonnage
| Daily feed per day | Recommended | Why |
|---|---|---|
| < 50 kg/day (≤ 20 chickens, ≤ 5 pigs) | Combined mixer-grinder | Cheapest, simplest, more than enough capacity |
| 50–200 kg/day (20–100 chickens, 5–20 pigs, 3–5 cattle) | Either — combined just barely, separate is the safer buy | At the upper end, combined units run at 100% every day and wear fast |
| 200–500 kg/day | Separate hammer mill + flat-mouth mixer | Two dedicated machines run at 60–70% and last far longer |
| > 500 kg/day or mixed wet + dry | Separate mill + mixer, possibly a TMR mixer | TMR (Total Mixed Ration) mixes wet silage, concentrates and minerals in one pass — standard for dairy |
3. Dry species feed vs wet species feed
Poultry and layer hens eat almost entirely dry mash or crumbles. Cattle, dairy and sheep need moist or wet-mixed feed. That single fact changes the machine you buy:
- Poultry-only farm: combined mixer-grinder is almost always the right answer. All grinding is dry, all mixing is dry.
- Mixed poultry + cattle: separate mill + dedicated wet mixer. The combined unit will never do a good job mixing silage and molasses.
- Dairy farm over 10 cows: start looking at TMR mixers — they do a better job mixing silage and concentrates than any stand-alone mixer or combined unit.
4. Future pellet plans
If you think you will add a pellet machine within 12 months, split the budget from day one. Pellets need pre-ground mash that is blended consistently. A combined unit grinds and blends one batch at a time — you cannot stockpile consistent mash for a pellet machine. A separate mill and mixer lets you grind in the morning, mix in the afternoon, and pellet the same or next day.
5. Pre-purchase checklist
- Combined unit: confirm the mixer chamber is washable — feed left inside overnight molds fast
- Separate hammer mill: screen sizes that match the grain you feed (maize needs 4–5 mm, soy 6–7 mm)
- Flat-mouth mixer: check if the top-opening design is easy to empty — it determines how clean you keep batches
- Drum or rotary mixer: good for dry powder and premix additives; not designed for wet feed
- Voltage: combined units and mills up to 3 kW run single-phase 220 V; three-phase needed above that
- Spares: hammers and belts for the mill; paddles for the mixer — all should be orderable separately
FAQ
- Can I mix wet silage in a combined mixer-grinder?
- Most cannot. Combines are designed for dry-only grinding and blending. A dedicated flat-mouth mixer or TMR mixer handles wet silage and molasses properly.
- Is one hammer mill really enough for all grains?
- Yes — swap the screen size. 4 mm for maize, 6 mm for soybean, 8 mm for wheat bran. Screen changes take minutes. Hammer mills also chop small amounts of grass and stalk for silage pre-processing.
- What motor size do I need?
- A combined mixer-grinder with 2.2–3 kW handles 50–100 kg/day comfortably. A standalone hammer mill starts at 3 kW for small operations and goes up from there.
- How long should a mixer or mill last?
- 10+ years of daily use with basic maintenance — grease bearings every 100 hours, check belt tension weekly, and keep hammer screen clear of dust.
- What documents and warranty come with export orders?
- Invoice, packing list and bill of lading as standard; 12 months warranty with lifetime spare parts supply, guide replacement by video call within 24 hours.
Match machines to your farm: browse our combined mixer-grinders, hammer mills, flat-mouth mixers, drum mixers and TMR mixers — tell us daily volume and species and we will quote the right setup within 24 hours.