Question 1

Side channel blower or Roots blower - how do I choose?

Accepted Answer

A side channel blower operates without contact between rotor and casing, is quiet, needs little maintenance and covers low to medium flow rates at low, constant pressures well - aeration of small tanks, light pneumatic conveying, industrial suction. A Roots (lobe) blower generates higher flow rates and pressures, making it the choice for large aeration tanks, grain conveying or fluidisation, where the side channel would not have enough capacity. Above a certain flow rate, the Roots blower also becomes the more energy-efficient solution per m³ moved.

Question 2

What parameters matter when choosing an industrial fan?

Accepted Answer

The required air flow rate (m³/h) and the static pressure the ventilation system has to overcome (Pa) are the starting point. To these you add the temperature of the gas handled (some fans withstand only up to 60-80°C, others are built for hot gases), the presence of dust or abrasive particles, which calls for a wear-resistant impeller, and the permitted noise level. A fan chosen only by flow rate, without the real pressure of the duct network, frequently ends up undersized in the field.

Question 3

What does an EC fan mean compared with a classic AC one?

Accepted Answer

EC (Electronically Commutated) fans use permanent-magnet motors with integrated speed control electronics, with an efficiency 20-30% better than classic AC induction motors at partial load - a frequent situation in real operation. In addition, the speed is adjusted directly, without a separate variable frequency drive. The purchase cost is higher, but in continuous operation (production halls, clean rooms, industrial HVAC systems) the difference in consumption pays back the investment within a few years.

Question 4

What is the difference between a screw compressor and an industrial blower?

Accepted Answer

The difference is the pressure level generated. A blower (side channel or Roots) works at low pressures, usually below 1 bar, and is suited to aeration, low-density pneumatic conveying or light vacuum. A screw compressor compresses air to pressures of 6-13 bar, used for pneumatic automation, compressed-air tools or processes that require high-pressure air. Using a compressor where a blower is sufficient means an unjustifiably high energy consumption for the pressure actually needed.

Question 5

What information do I include in the request for quotation for a blower or fan?

Accepted Answer

The required flow rate (m³/h), the differential or static pressure needed, the temperature and nature of the gas (clean air, dusty, corrosive), the altitude and ambient temperature of the installation, plus the available supply voltage. For replacements, the code on the nameplate of the existing equipment is enough to quickly identify a compatible or equivalent model. If the equipment serves an area at risk of explosion, also state the ATEX classification of the zone, so that we can propose a suitably certified model straight away.

Question 6

How long does delivery of industrial blowers and fans take?

Accepted Answer

For the standard range, in the usual powers, the lead time is 24–72 h when the item is available locally or at the supplier. High-capacity Roots blowers, specially configured EC fans or equipment with ATEX certification are made to order, usually 1–4 weeks, as they are produced or parameterised to the customer's specification; it can take longer depending on the brand and the specifications. We check availability before confirming the quotation, especially for unplanned process shutdowns.

Industrial Blowers and Fans

Which product types do we supply?

Which brands do we quote in this category?

Spare parts and accessories

What we do for you

Frequently asked questions