Karl Klein Ventilatorenbau GmbH - Industrieventilatoren

Fans

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Get an overview of our product portfolio: Fans, fan wheels, and accessories.

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Press releases, important dates, and current news about Karl Klein.

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The Karl Klein Group - impressive diversity

Competence in radial fan construction/process fans for series production and the manufacturing of individual parts • Technologies for standardisation and niche applications • Customer-oriented CAD design • Development with flow simulation and impeller calculation • Flexibility through high vertical range of manufacture • Fast response times • Short delivery times for complex products • Our little ones can do what the big ones can do!

Fans with split-phase motors

The 1st product range of Karl Klein in 1965 - and still reliable today.

Application areas

  • Extruders
  • Heating boiler construction
  • Switch cabinet construction

Fan types

  • ENG 1-2,8 B
  • ENG 1-2,6 B
  • ENG 1-1,6 B
  • ENG 1-1,2 B
  • ENG 1-0,8
  • ENG 1-0,65

External rotor fans

For the most varied application areas - compact and space-saving

Application areas

  • Apparatus engineering
  • Ventilation systems
  • Compact units

Fans

  • ENG 5-10 A
  • ENG 4-6 A
  • ENG 3-4 A

Low-pressure fans with drum impellers - to 7,000 m3/h, 11.0 kW

Gap-free production program in series production

Standard

  • Compact design
  • Impellers with a high volume flow and small diameter, available with a wheel Ø of up to 315 mm or 11.0 kW
  • Case made from steel sheet, painted black
  • Clockwise or anti-clockwise rotation
  • Frequency adjustable

Optional

  • Extensive accessories
  • Available as a dual fan
  • Up to 1.0 kW in multi-range voltage 50/60 Hz
  • V2A, from 0.55 kW V4A
  • For hot air to 400°C in continuous operation
  • ATEX zone 1 and 2 or Zone 22 (for media temperature of between -20°C and +60°C)
  • Rail-suitable design
  • With hydraulic drive
  • Water-cooled drive

Low-pressure fans with backward curved blades

Standard

  • 2- or 4-pole
  • Highly efficient impellers
  • Case made from steel sheet
  • Clockwise or anti-clockwise rotation
  • Frequency adjustable

Optional

  • Coupling
  • Extensive accessories
  • Stainless steel (V2A, V4A)
  • For hot air to 600°C in continuous operation
  • ATEX zone 1, 2, 21, or 22 (for media temperature of between -20°C and +60°C)

With coupling drive

Medium-pressure fans

Standard

  • Fan case made from painted steel sheet
  • Impellers made from aluminium (for ATEX: Steel impellers)
  • With backward or forward curved blades
  • Frequency adjustable

 

Optional

  • Stainless steel (V2A, V4A)
  • For hot air to 400°C in continuous operation
  • ATEX zone 1, 2, 21, or 22 (for media temperature of between -20°C and +60°C)

 

With belt drive

High-pressure fans

Special features

  • Speeds of up to 130 Hz
  • Variable frequency drive built on or as switching cabinet version
  • Impellers made from aluminium (for ATEX: Steel)

Optional

  • Stainless steel (V2A, V4A)
  • Hot air to 300°C (more or less than this in individual cases)
  • ATEX (VFD in switching cabinet, for media temperature of between -20°C and +60°C)

Boiler fans

Special features

Motor can be supplied with Hall sensor as rotational speed monitor

Specifications

  • Seal-welded case
  • Impellers with straight blades, suitable for dust and soot particles
  • Temperature barrier to 350°C

Mobile fans

Application areas

  • Fuel station service
  • Storage systems
  • Ship containers
  • Rail containers
  • Filling stations
  • Long suction sections
  • Wooden pellet delivery vehicles

Specifications

  • Frame with 2 wheels in stable industrial design
  • Telescopic handles
  • Can be carried with a carry handle

 

Special features

  • Type examination certificate as per DIN EN 14986 and DIN EN 13463
  • 3 x 400 V, 50 Hz drives, from 0.12 to 1.5 kW
  • Suitable for use in zones 1, 2, and 22

Hot air fans - up to 600°C in continuous operation

Application areas

  • Industrial oven construction
  • Baker's oven construction
  • Radiant heating systems
  • Convectors
  • Heat treatment furnaces
  • Incinerators
  • Recirculating air operation
  • Heat treatment plants

Special features

Can be supplied with sealed temperature barrier

Plug fan as of impeller diameter of 710 mm to 600°C continuous operation

ATEX zone 1 and 2 fans

Application areas

  • Biogas plants
  • Environmental technology
  • Storage technology
  • Shipbuilding
  • Electrical heating systems
  • Suction systems
  • Clean room technology
  • Filling systems

Special features

  • Gas Ex-zones 1 and 2
  • Explosion groups IIA, IIB, and IIC as per DIN EN 14986
  • Temperature class T3, temperature class T4 - T6 available on request
  • Variable frequency drive operation
  • "Non-electrical equipment" as per DIN EN 13463 Parts 1 and 5
  • Documentation for drive (electrical part) and fan (non-electrical part)

ATEX zone 21 and 22 fans

Application areas

  • Filter technology
  • Filling systems
  • Large-scale mills

Specifications

  • Dust Ex-zones 21 and 22
  • Explosion groups IIIA, IIIB, and IIIC as per DIN EN 14986
  • Temperature class T 125°C
  • Variable frequency drive operation
  • "Non-electrical equipment" as per DIN EN 13463 Parts 1 and 5
  • Documentation for drive (electrical part) and fan (non-electrical part)
  • Ex-protection for dust-containing media in or around fan

Gas-tight fans

Special features

  • Seal-welded fan case
  • Sealed screwed-on parts, including screws/threads
  • Impermeability report
  • Specification of motor leakage rate with additional sealing flange

Stainless steel fans

Special features

  • Case, impeller, motor shaft, screws in stainless steel
  • Material V2A (AISI 314) or V4A (AISI 316)
  • Accessory parts in V2A
  • Welded assemblies are glass-bead-blasted

Optional

  • For hot air to 600°C in continuous operation
  • ATEX (for media temperature of between -20°C and +60°C)

Cast fans

Standard

  • Case made from cast iron, including base
  • Base can be rotated up to 45°
  • Suction-side flange connection with threaded holes
  • Pressure-side flange connection with through-holes
  • Felt seal on shaft passage
  • Suction-side silicone seal on case cover
  • Motor with PTC thermistor

Optional

  • 50 or 60 Hz operation
  • Pole-changeable
  • ATEX (for media temperature of between -20°C and +60°C)
  • Suitable for variable frequency drive operation
  • Media temperature of up to 400°C in continuous operation

Transport fans (cast iron)

Special features

  • Case made from cast iron, sealed
  • Impeller made from steel with straight blades
  • Stainless steel or N-A-XTRA®
  • Suitable for the conveyance of coarse dusts, chips, and light bulk goods

Sound protection measures

Special features

  • Case sheathing for reduction in structure-borne sound
  • Complete enclosures. Flexible, as case insulation or with sound protection canopy.
  • For the isolation of thermal processes

Large-volume radial fans - from our plant in Eisenberg/Thüringen

Special features

  • Volume flows of up to 650,000 m³/h
  • Pressure differences of up to 25.0 kPa
  • Belt, coupling, or direct drives
  • Heavy-duty industrial design
  • Painting as per customer's requirements
  • Media temperatures to max. 650°C
  • Case sheath for sound insulation
  • Split case halves
  • Fold-out impeller
  • ATEX designs (for media temperature of between -20°C and +60°C)

Radial plug fans

Special features

  • Our own high-performance impellers with backward curved blades
  • Impeller diameter of max. 2,500 mm
  • Media temperatures of max. 650°C, with insulation housing if required 
  • Application-optimised material selection, e.g. sheet steel, stainless steel, N-A-XTRA®
  • Mounting plates as per the customer's requirements
  • Belt or direct drives
  • ATEX designs (for media temperature of between -20°C and +60°C)

Kamptmann fan wheels

Special features

  • Closed impellers
  • Open impellers for the conveyance of materials, e.g. films or textile residue
  • Forward curved, riveted or welded drum impellers
  • Inlet nozzles
  • Materials:
  • Aluminium
  • Painted or zinc-plated sheet steel
  • Stainless steel AISI 314 or 316, N-A-XTRA®
  • Impeller diameter of max. 1,500 mm

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