WAM Tubular Ribbon Flight Screw Feeders PR

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Product Description:

A specialised version of the TU-type screw conveyor, configured in particular for use with hydrated lime, the PR-type Tubular Screw Feeder comes with a ribbon flight screw. For process reasons this screw feeder type is often equipped with a variable speed drive.


PR Ribbon Flight Screw Feeders ensure uniform discharging and feeding of lime in special dosing plants from a silo into a dissolver or micro-feeding device.



  • Outside tube diameters: 70 mm (2.8 in), 82 mm (3.2 in), 114 mm (4.5 in), 168 mm (6.6 in)

  • Tubular casing in standard flanged sections with one section made to measure

  • Standard inspection hatch beneath inlet

  • Ribbon flight screw with splined shaft couplings

  • Direct-mounted WAM gear reduction unit (with or without mechanical variable speed drive) with incorporated, fully protected, maintenance-free end bearing assembly and self-adjusting packing gland seal

  • Standard flange-mounted electric motor

  • No intermediate hanger bearings

  • Feed rates: 70 ~ 4,500 litres per hour (0.04 ~ 2.6 cfm)

  • Installed drive power: 0.37 kW (0.5 HP) ~ 3.0 kW (4.0 HP)



  • Uniform material flow

  • High feeding accuracy

  • No flushing



  • Fluidised inlet hopper

  • Fluidisation pads


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