Is everything a fixed, standard product?

We build proven standard designs first because our teams make them often and they perform consistently. We can adjust or do a one-off where there is a good reason, but we will not make a project more complicated than it needs to be.

Can ROC fans replace fans from other brands?

Often, yes. Once the mounting, ducting, electrical details and airflow requirement of the existing installation are confirmed, one of ours can usually go straight in where the old one was.

Airflow & components

Fans sized to the air the crop actually needs.

We supply fans for curing, drying and ventilation. The right one comes down to how much air you need to move and how hard it is to push it through the crop.

Ask about this See the range

Air movement

The right fan depends on pressure, crop load and airflow route.

A fan should not be chosen in isolation. Crop depth, ducting, restrictions, heat exchanger design and required air volume all change what fan is suitable. We specify fans as part of the system so the air goes where it is needed.

Key points03

01
Diameters from 0.6 m to 1.8 m
02
Roughly 7,000 to 80,000 cfm of air
03
Matched to the system, for new builds or upgrades

Fan range

Fans by diameter and airflow

ModelSpecificationNo.

0.6 m · 4 pole

7,000 cfm (11,900 m³/hr)

0.6 m · 2 pole

12,000 cfm (20,400 m³/hr)

0.8 m · 4 pole

15,000 cfm (25,500 m³/hr)

1.0 m · 4 pole

25,000 cfm (42,500 m³/hr) · standard or short

1.1 m · 4 pole

30,000 cfm (57,000 m³/hr)

1.5 m · 4 pole

50,000 cfm (85,000 m³/hr)

1.8 m · 6 pole

70,000 to 80,000 cfm (119,000 to 136,000 m³/hr)

Getting it right

Most airflow problems are about matching, not the fan.

Sized to the air you need

Volume and pressure picked around the job the fan has to do, not guessed at.

Placed to push through the crop

Where the fan sits decides whether the air goes through the load or just around it.

Built for long runs

Made for agricultural use and long hours through the season.

Replaces old fans where the fit is right

We confirm mounting, ducting, electrical details and the airflow requirement before recommending a replacement.

Gallery

Agricultural airflow components

ROC fan components, including a guard being finished at the factory before assembly.

Image set

03 photo views

Fans agricultural airflow components photo 1

Fans agricultural airflow components photo 2

Fans agricultural airflow components photo 3

Common questions

Questions worth settling before you buy.

Yes. We normally start with the crop, volume, site layout, fuel or power source, existing buildings and what is slowing the season down.

Included with every system

Support comes with the system.

Farm visit and sizing

We look at crop, site, fuel, power, buildings and workflow before sizing the system.

Build check-ins

We supply the drawings and check the build at key stages while your builder handles the brickwork.

Season support

Calls, setup help, troubleshooting and practical advice are part of the system.

Related equipment

Often part of the same job.

See the full range

Empty ROC tobacco curing tunnel ready for trolley loading

Flagship curing systems

Core system

Tobacco Curing Tunnels

RS-72 to RS-219 tunnel range

Even curing, less leaf handling and efficient fuel use, proven on ROC's own crop.

See tunnel models

ROC heat exchanger for curing and drying systems

Heat transfer

Efficient

Heat Exchangers

System matched configurations

Dry-heat exchangers matched to the system, with no boiler to keep hot, treat or pressure-test.

See heat-transfer options

ROC continuous flow grain dryer installation

Grain drying systems

High output

Continuous Flow Grain Dryers

8, 12 and 16 tonne/hour options

Continuous-flow dryers for maize, wheat and soya, with setups available for crops like macadamia, paprika and onions.

See dryer outputs

Talk to ROC Systems

Tell us what the fan is for and we will size it.

Let us know the system it is serving, and we will sort out the capacity, pressure and where it goes.

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