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Polyurethanes

All cast parts as per drawing or as per samples.
These parts offer excellent working performances not just in abrasion but in impact resistant too.

Pumps parts

13a

 

 

 

Screening pannels or modules.

15a 14a

Mill linings and lifting bars.

16a

Flotation cells wear Parts.

17a

Hydrocyclones and spares.

18ab 18a

 

Wear resistance

Polyurethane performs 5 to 6 times better than so-called "wear resistant" rubber.

Resistance to impacts

Absorbs the shock perfectly whilst still resisting the abrasion, this justified its use for the production of screen decks and linings.

Resistance to crushing

Results are much higher compared to classic elastomers with similar hardness; the compression-springs admit loads 3 to 4 times higher.

Sliding coefficient

The best results with polyurethane are obtained with a 90 Shore A hardness, making it the perfect choice for chute linings, snow-plough plates and belt cleaners for conveyors.

Resistance to temperature

The polyurethanes conserve their properties between -5 and +80°C. Please contact us for applications out of limits.

Chimical resistance

Our polyurethane is resistant to chemical attack, especially against greases, oils, hydrocarbons, solvents, etc.

Noise reduction

A significant reduction in noise results from the use of polyurethane wearparts.

Machining

It is comparable to rubber. The polyurethanes can be cold bonded following the same method of operation as for the rubbers. We can also supply the necessary adhesives for their applications.

Our possibilities :

  • Polyurethane plates
  • Polyurethane with metal insert
  • Rubber backed Polyurethane plates
  • Screen panels
  • Footing blocks

 

Physical and mechanical Characteristics

Properties Normes Unit Grade
Hardness DIN 53749 Shore A 60 70 80 90
Density
 DIN 53749 g/mm3
 1.21 1.21 1.21 1.21

Resistance to tearing
- non started
- started

DIN 53515
DIN 53515

 kN/m
kN/m
 52
16
 67
22
 95
39
 126
52
Resistance to traction
 DIN 53504 Mpa 26
 31.4
 41
 38.4
Elongation to breaking
 DIN 53504 %
 545
 550
 525
 555
Resilience
 DIN 53512 %
 47
 46
 44
 40
Permanent deformation at 25% compression during 22 hours at 70°C
 DIN 53517 %
 12
 15
 19
 21
Abrasion
 DIN 53516 mm3
 22
 22
 19
 31

 

Shore A Hardness Color
60
70
80
30

 

Plates sizesThicknesses from:

  • 2 to 10 mm +/- 0.2 mm 1500 +/-10 X 3000 +/-20 mm
  • 12 to 15 mm +/- 1 mm 1500 +/-10 X 3000 +/-20 mm
  • 20 to 30 mm +/- 2 mm 1500 +/-10 X 3000 +/-20 mm

 

Screen panels

Please contact us regarding any enquiries you may have.

We can offer you:

  • Polyurethane screen panels with side and longitudinal tension, exceptional resistance to abrasion, reinforced with steel cable integrated in the body and fastened by hooks.
    Apertures : square, rectangular, from 3.2 to 115 mm.
  • Polyurethane screen panels with side and longitudinal tension, exceptional resistance to abrasion, with steel frame integrated in the body and fastened by bolts directly onto the frame of the screen deck.
    Apertures : square, rectangular, from 3.2 to 115 mm and openings from 200 microns to 1 mm in washing applications.
  • Accessories for the screen panels
  • Polyurethane nozzles

 

Footing blocks

The footing blocks in polyurethane:

  • suppress the incoming angles
  • is installed instead of rolls
  • has a wear resistance higher than PEHD
  • will not damage the belt
  • 2 fabrications : full polyurethane or polyurethane with ceramic inserts.