Why a roller mill, and not another hammer mill
Many posho mills in Kenya are hammer mills. They grind the whole kernel, bran and germ together, into one bag. The Roff Posho is a roller mill: it breaks the kernel open and a screen separates most of the bran and some of the germ.
| Posho Hammer mill | Roff Posho Roller Mill | |
|---|---|---|
| The meal | Everything milled together | Whiter, higher quality sifted meal, with most of the bran and some of the germ removed |
| The bran | Stays in the meal | Comes out of its own bag outlet, about 15 to 18% of the maize, for animal feed |
| Shelf life | Spoils sooner, because the germ is milled in | Keeps better, with less germ in the meal |
| Power | More power for the same bag of maize | Less power: two 5.5 kW motors |
| Noise and dust | High noise and dust levels | Much less noise and dust |
| Space | Small | Same footprint: 3 m by 2 m, fits in a single garage |
| Fineness | Finer, if your customers want very fine meal | Standard sifted meal. |
Bottom line: a hammer mill grinds everything together. The Roff Posho separates the bran, so you bag whiter meal for your customers and bran for the feed market, in the same space and on less power.
Community milling
What the Roff Posho is, and what it is not
What the Posho is
A community mill. Customers bring their maize, you mill it for a fee, and they leave with whiter meal and a bag of bran. It mills and separates with screens.
What it is not
It does not make Grade 1 Sifted or packaged maize meal under your own brand. That is a commercial plant with extra steps, such as the Roff SP-1, and a different business.
Specification
The mill in numbers
- Maize in
- About 750 kg an hour; around 6 tons in an 8-hour shift
- What comes out
- About 82 to 85% sifted maize meal; 15 to 18% bran
- Motors
- Two 5.5 kW motors, 11 kW in total
- Rollers
- Two sets, 450 × 191 mm, V-belt driven
- Screens
- One screen deck separates the bran from the meal
- Outlets
- Dual bag outlets for meal and for bran, so you switch bags without stopping
- Hopper
- 50 litres, with an agitator for even feeding
- Footprint
- 3 m × 2 m, 2.3 m high; about 1,000 kg
- Crated for shipping
- 2.9 m × 1.1 m × 2.3 m
- Warranty
- 12 months
Figures are typical and depend on the maize and on how the mill is set up.
The offer
What the US$15,000 covers
Included
- The Roff Posho mill with its control panel (forward and reverse switches, amp meter, emergency stop), hopper and access ladder
- Crating for sea freight
- Sea freight to the port of Mombasa, worth US$2,400
For your account
- Kenyan import duty and taxes, port and clearing charges
- Insurance, and transport from Mombasa to your site
- Electrical connection and installation on site. Installation is simple, and a Roff technician is on the phone during commissioning
The price is in US dollars and the quotation sets out the payment terms.
Whiter still
Condition the maize first
Add a little water, let the maize rest, then mill. The bran comes off in flakes instead of shattering into the meal, and the meal is whiter again. The 70-litre horizontal batch mixer does this for a community mill. Ask about it when you enquire.
From enquiry to milling
How it works from here
Four steps, and a Roff consultant with you for each of them.
Send your details, or WhatsApp us
Use the form below or WhatsApp +27 68 680 9230.
A Roff consultant calls you
Your questions answered, then a quotation in US dollars.
Crated in Kroonstad, shipped to Mombasa
On your order, the mill is crated for sea freight. The next shipment leaves 30 November.
Collect, install, start milling
Your clearing agent collects at the port. You install, with a Roff technician on the phone during commissioning.
Enquire
Ask for a quotation
A Roff consultant calls you back, answers your questions and sends a quotation in US dollars.
Or WhatsApp +27 68 680 9230, or email sales@roffmilling.com.
Questions we get asked
Is the price in Kenyan shillings?
No. The offer is priced and paid in US dollars. The exchange rate on the day is yours.
Does US$15,000 include duty and clearing in Kenya?
No. The price covers the mill, crating and sea freight to the port of Mombasa. Import duty and taxes, port and clearing charges, insurance and transport to your site are for your account. Your clearing agent can tell you what to budget.
Can I make Grade 1 Sifted maize meal with the Posho?
No. The Posho makes sifted meal for community milling. Grade 1 Sifted requires extra equipment found in a commercial plant such as the Roff SP-1.
What electricity do I need?
Two 5.5 kW motors, 11 kW in total. Tell us about your supply when you enquire and we will confirm what the mill needs.
Do I need training to run it?
No formal training is required. Installation and commissioning are simple, and Roff technicians support you by phone while you do it.
How long does the offer run?
While stocks last. The next shipment leaves 30 November.
Roff Milling has built maize mills in Kroonstad, South Africa, since 1991, with a branch in Kitwe, Zambia. Full specification and the brochure to download on the Posho product page.
What's the next step?
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Talk to us on WhatsApp
Message +27 68 680 9230 and a Roff consultant picks it up.
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Looking for a commercial plant?
Roff also builds commercial maize mills for packaged, branded meal, from 1 to 5 tons of maize an hour. That is a different business to community milling, with its own page for Kenya.
