Dündar CM 21.4D Sparse-Blade Dust Extraction Fan (Single-Phase), 1,250 m³, 1,460 rpm

Name: Dündar CM 21.4D Sparse-Blade Dust Extraction Fan (Single-Phase), 1,250 m³, 1,460 rpm
Brand: Dündar
SKU: 104214110
Price: 188.38 USD
Availability: InStock

$188.38 ~~$261.64~~ · In stock

Brand: Dündar · SKU: 104214110 · Warranty: 24 months

Dündar CM 21.4D Sparse-Blade Dust Extraction Fan (Single-Phase), 1,250 m³, 1,460 rpm

Other options

Dündar CM 16.2D Wide-Blade Dust Extraction Fan (Single-Phase), 1,000 m³/h, 2,850 rpm – $158.81
Dündar CT 16.2D Open-Blade Dust-Extraction Fan, Three-Phase, 1,000 m³, 2,850 RPM – $158.81
Dündar CM 16.4D Sparse-Blade Dust Extraction Fan, Single-Phase, 550 m³, 1,480 RPM – $149.87
Dündar CT 16.4D Open-Blade Dust Extraction Fan, Three-Phase, 550 m³, 1480 RPM – $149.87
Dündar CM 18.2D Open-Blade Dust Extraction Fan, Single-Phase, 1,350 m³, 2,750 RPM – $185.68
Dündar CT 18.2D Sparse-Blade Dust Extraction Fan, Three-Phase, 1350 m³, 2750 RPM – $185.68
Dündar CM 18.4D Sparse-Blade Dust Extraction Fan, Single-Phase, 750 m³, 1,470 RPM – $175.70
Dündar CT 18.4D Sparse-Blade Dust Extraction Fan, Three-Phase, 750 m³, 1470 rpm – $175.70
Dündar CM 21.2D Open-Blade Dust Extraction Fan, Single-Phase, 2,150 m³, 2,650 RPM – $199.73
Dündar CT 21.2D Sparse-Blade Dust Extraction Fan, Three-Phase, 2,150 m³, 2,650 rpm – $209.18
Dündar CT 21.4D Open-Blade Dust Extraction Fan, Three-Phase, 1,250 m³, 1,460 RPM – $188.38

Product description

Dündar CM 21.4D Sparse-Blade Dust Extraction Fan – Features

Product Type	AC/DC	Volt	W	rpm	m³/h	Noise (dB(A))	Weight
CM 21.4D	AC	220	270	1460	1250	50	13.7

MODEL	C	D	E	H	L	O	P	S	T
CM 21.4D	420	265	360	360	198	220	200	150	169

What Is a Dust Extraction Fan?

Industries require specialized dust extraction fans in their manufacturing, production, or industrial facilities to reduce contamination, keep the working environment clean, and improve safer working conditions for workers. Different industrial processes generate dust particles of varying sizes; some settle while others remain suspended in the air. Typical dust extraction fans are fan systems that draw or filter dirty air. Depending on the type of dust produced by the industrial process, different fan equipment is used to perform different dust collection tasks. Centrifugal fans can handle high-volume dust loads and are therefore widely used to capture dust in industrial processes.

Applications

In areas where dusty air needs to be exhausted
In duct applications where axial fans provide insufficient pressure and flow rate,
General and industrial buildings,
Carpentry workshops,
Polishing machines
Paint shops,
Factories,
Environments with dust and vapor,
Cooling of industrial machinery
(Welding machines, transformers, compressors…)*

Fan Housing and Impeller

Radial casing made from cold-drawn high-quality DKP sheet metal,
High corrosion resistance with environmentally friendly electrostatic epoxy powder coating; galvanized forward-curved radial impeller dynamically tested per ISO 1940 standard; manufactured in accordance with EN 60335-2-80
High pressure and flow rate values through inlet nozzle application,
Air inlet protected with a guard against foreign object ingress **
Sturdy and neat casing structure with special clinch-type casing assembly,
Low noise level,
Right- and left-hand orientation options for installation in any desired direction,

Motor

Quality production without manual handling on high-technology CNC machines,
Aluminum-finned motor casing with high thermal conductivity,
Rotor balanced to ISO 1940 standards for extended bearing service life,
Wide operating range for coils with insulation class F: −40° to +70°;* 230 V / 50 Hz single-phase fan motor **
400 V / 50 Hz, three-phase fan motor
Standards-compliant certified components,
IP 54 protection class (IP 55 production option available on request)
Variable frequency drive (VFD) control capability for three-phase fans

Things to Consider When Selecting a Fan;

4 parameters should be considered when selecting a fan:

Required Air Flow Rate
Pressure Losses
Acceptable Noise Level
Electrical Power Connection Type

The air changes required for the space to be ventilated depend on the intended use of the space, the number of occupants and objects inside, and their activities. The table alongside provides the required air change rate coefficients for different environments.

Environment	Air Change Rate
Auditoriums	6-8
Paint Ovens	25-50
Vault Rooms	3-6
Cinemas and Theaters	5-8
Commercial Kitchens	15-30
Foundries	8-15
Gymnasiums	4-6
Laundries	10-20
Indoor Swimming Pools	3-4
Restaurants	8-12
Conference Rooms	6-8
Waiting Rooms	10-15
Copy Rooms	10-15
Machine Rooms	10-40
Shops	4-8
Dry Cleaning	5-15
General Manufacturing Areas	4-8
Hospitals	8-12
Laboratories	8-15
Normal Activity (non-smoking)	29 m³/h
Normal Activity (smoking)	58 m³/h
Light Activity	45 m³/h
Heavy Activity (industrial work areas)	60 m³/h

The amount of air per person in living and working spaces depending on activity level can help determine the required air flow rate.

Based on the information provided above, the required air flow rate is determined as follows.

Q [ m³/h ] = Air change rate coefficient (1 hour) × Space volume (m³)
Q [ m³/h ] = Number of people × Air flow rate required per person

After determining the required air flow rate for the space, an appropriate duct design (taking noise and air velocity criteria into account) should be made and pressure losses calculated. The fan type (axial, radial, roof, smoke extraction, etc.) should be decided based on the operating environment, and the appropriate fan should be selected from the relevant fan curve according to the determined flow rate–static pressure pair. To briefly illustrate the above with an example: an office has 5 employees, a ceiling height of 2.6 meters, and a floor area of 50 m², giving a volume of 2.6 × 50 = 130 m³. The air change rate coefficient given for an office in the table is 4–8; let's take 5. 130 × 5 = 650 m³/h air requirement. If we assume normal activity in the office, 5 people × 29 m³ = 145 m³ for employees, giving a total of 650 + 145 = 795 m³/h air requirement.

Fan selection is also made based on this flow rate requirement.

After completing the flow rate calculations, the installation location of the fan should be determined. Where will the fan be mounted — ceiling, wall, chimney, or ventilation duct? Another consideration is the voltage of the electrical supply to the fan. Continuing with our office example: fans in offices are generally mounted on a wall or glass. If a domestic electricity supply is used, a single-phase fan should be preferred. If it is to be used in an industrial setting, a fan operating on three-phase (380 V) power should be used.

Specifications

Brand	Dündar