Grinding · Model FMFQ(S)
FMFQ(S) Double Roller Mill
Pneumatic, hydraulic, precision — the industrial standard.
- 60+ years manufacturing
- 10–500 t/d capacity range
- 100+ patents
- Turnkey commissioning
What it does
FMFQ is what a serious flour plant grinds with. Two roll pairs per stand, pneumatic or manual engagement, hydraulic roll removal, independent feed drive. Every feature exists because at industrial scale a fifteen-minute adjustment turns into a fifteen-hour shutdown.
Technical parameters
Nominal values at standard conditions. Confirm final specification on the order drawing.
| Model | Roll spec (mm) | Fast roll (rpm) | Differential | Motor power | Weight | Dimensions (mm) |
|---|---|---|---|---|---|---|
| FMFQ(S) 50×2 | Φ250 × 500 | 550 | 2.5 : 1 | 5.5–15 kW | 2,400 kg | 1400 × 1410 × 1850 |
| FMFQ(S) 60×2 | Φ250 × 600 | 550 | 2 : 1 | 5.5–18.5 kW | 2,700 kg | 1500 × 1410 × 1850 |
| FMFQ(S) 80×2 | Φ250 × 800 | 550 | 1.5 : 1 | 7.5–22 kW | 2,900 kg | 1700 × 1410 × 1850 |
| FMFQ(S) 100×2 | Φ250 × 1000 | 550 | 1.25 : 1 | 11–22 kW | 3,100 kg | 1900 × 1410 × 1850 |
Selection guidance
The differential ratio is not interchangeable — it belongs to the passage. Break passages run 2.5:1 for a cutting action; reduction passages step down to 1.25:1 for a gentle attrition action. Ordering the wrong ratio for a position is a common and costly mistake.
Maintenance
Working pressure 0.4–0.6 MPa; air consumption 0.06–0.08 m³/h per mill. Check roll parallelism every 500 hours with a feeler gauge at both ends; a 0.05 mm taper produces a visible ash gradient across the flour stream.
Selection cross-check
Roller mills: single vs double
The roll mill is 55–65% of plant power and the machine that sets your extraction. The single/double choice drives the whole building layout.
This machine
FMFQ(S) Double Roller Mill
FMFQ(S)
Choose it when
Every plant above 20 t/d. Two independent roll pairs in one frame with separate feeds, so one machine serves two passages — which is what makes a compact multi-passage flow sheet possible.
Watch out for
Higher capital per unit and it needs proper foundation and alignment. Also grinds maize, sorghum, chilli and feed materials, so it is the flexible choice for multi-product plants.
Alternative
6F Single Roller Mill
6F
Choose it when
Plants under 20 t/d, village mills, and anywhere the flow sheet has one or two passages. Simple, cheap, easy to maintain without specialist skill.
Watch out for
One pair of rolls per machine means one passage per machine — a 4B5M flow sheet would need nine separate mills and nine feed systems.
Open 6F Single Roller Mill →Decision rule
Under 20 t/d and two passages: single. Above that: double, without exception — the building savings alone justify it.
Answers
Frequently asked questions
Straight answers to the questions engineers and mill owners actually ask us during plant sizing. If your case is not covered, send the wheat specification and your target tonnage.
Ask an engineer →- What does the S in FMFQ(S) mean?
- It denotes the pneumatic (servo-assisted) engagement variant. The base FMFQ is manual engagement; the S adds pneumatic roll engagement and disengagement with remote control.
- Why does the differential ratio change per passage?
- Break rolls need a fast differential to shear bran open. Reduction rolls need a small differential so the endosperm is reduced by attrition rather than being cut, which would generate excessive fine bran and heat.
- How much air does a mill floor need?
- At 0.06–0.08 m³/h per mill of consumption, a 20-stand floor draws roughly 1.6 m³/h at 0.6 MPa. Add 30% margin for leakage and future stands.
From the brochure
FMFQ(S) Double Roller Mill catalogue images
Photographs and parameter panels reproduced from the 2026 catalogue. Captions are the original brochure text.
Next step
Send your tonnage. Get a flow sheet in 12 working hours.
Send us: daily capacity target, wheat type and quality, available building dimensions, and local power supply. We reply within 12 working hours with a preliminary flow sheet, equipment list and budget range — no obligation.