🔒
Welcome at Praezi >Login Webshop
search languages menu
DEnlFRITplhuČeskyRU

Augers for all fields of application

PRÄZI-FÖRDERTECHNIK offers a comprehensive range of augers, endless rolled augers, installation-ready augers, screw conveyors and spirals.

With our expertise and technology, we can guarantee you a product of the highest quality for versatile application such as

Endless rolled augers

Endless rolled augers are produced for you in top quality on our special cold-rolling automation units from ST materials, rust- and acid resistant steels and other cold-rolling steel qualities.

The forming process that we apply leads to an increase in strength up to the outer diameter of up to 60%, allowing us to achieve considerable improvements in wear resistance in daily use.

vermassungsschema Schneckenbleche

spezialwalzung Schneckenbleche

 

 

 

 

 

 

 

The raw coil materials are formed between two conical rollers on one of the most efficient, well-known special rolling systems in the world.
The increased strength of our augers means that the plates can be thinner whilst satisfying the same requirements as before. This means reduced costs and easier handling due to less weight.
To meet your particular requirements, we can manufacture a tailor-made end product in the diameter range of 50 – 800mm with the option of different gradients, and with an output plate strength of 2.5 – 10mm.
Fully automatic production ensures exact conformity to the specified, desired dimensions. Our endless rolled augers leave the machines ready-to-install, allowing trouble-free and cost-effective mounting on shafts and pipes.

Complete screw conveyors

We manufacture ready-to-install screw conveyors according to the requirements, drawings and design layouts of our customers.
For manufacture, we use:

  • endless rolled augers
  • spirals made of flat steel and
  • auger flights ( also HARDOX or similar ),

which we weld on to supporting shafts or pipes.


ausfuehrungsformen schneckenLocking is achieved through welded riveting or continuous welding. Drive-, bearing- and connecting pins are manufactured and assembled according to requirement guidelines.  A final alignment guarantees a ready-to-install product.

The screw conveyors are delivered with a black dip primer, without surface protection, or with a special varnish.

Wirbulators / Turbulators made of flat or round materials

For the manufacture of spirals on special fixtures, we use ST materials, rust- and acid-resistant qualities and, to an extent, heat-resistant steels.

The customer can choose diameters of between 20mm and a maximum of 200mm, depending on the cross-section of the material.

These special spirals can be used

  • for chip extraction in tooling machines,
  • in wood-chip and pellet heating systems,
  • as stoke and ash conveyors,
  • as wirbulators, turbulators, or cleaning augers and
  • in special machine engineering, e.g. in metering technology or samplers

Highly wear-resistant coated screw conveyors

Our highly wear-resistant coated screw conveyors are powder-coated and find application where maximum wear resistance is required.
For the coating, we use powder-form, self-fluxing, high quality metal alloys which have the appropriate compound of carbon, tungsten, carbides, chromium, boron, silicone and nickel. The alloy is fused with the rolled augers by means of a thermal sintering process.
This coating allows us to achieve a tightly closed molecular structure in the desired areas and a surface hardness of up to 61 HRC.  In partial coating, we mostly coat the augers in the outer areas on the delivery side.

Screw conveyors from stock

To meet market demands, we have developed a standard programme with dimensions of 80mm (outside diameter) through to 400mm (see following table).
All standard dimensions are available immediately from stock.

We also stock standard dimension diameters up to 250mm in material quality 1.4301. We can also fulfil individual customer requirements with regard to graduation, strength and dimension. Simply send us your enquiry using the contact form.

Standard lengths of 3000mm, left- and right-hand rotation,
of ST material ( Stw22 / ST 37), cold-rolled

D
Outer Ø
in mm
d
Inner Ø
in mm
S
Graduation
Tol. ±5% in mm
Source material
in mm
Plate thickness
at A-Ø
approx. mm
Weight per 3000mm approx. kg
80
90
100
120
125
17,2
25,0
33,7
33,7
33,7
80
90
100
120
125
2,5
2,5
2,5
2,5
2,5
1,2
1,3
1,5
1,3
1,3
2,9
3,2
3,5
4,3
4,5
140
150
160
180
200
42,4
48,3
48,3
48,3
48,3
140
150
160
180
200
2,5
3,0
3,0
3,0
3,5
1,3
1,6
1,6
1,5
1,7
5,0
6,4
6,8
7,7
10,0
200
200
250
250
300
315
350
400
48,3
60,3
60,3
60,3
76,1
76,1
88,9
101,6
200
200
250
250
300
315
350
400
6
6
4,0
6,0
5,0
5,0
5,0
8,0
2,8
2,8
2,0
3,0
2,5
2,4
2,5
4,0
17,6
17,5
14,3
22,0
21,5
22,6
25,0
47,0


PRÄZI screw conveyor products are distinguished through

  • our special rolling processes:
    our use of special, more efficient rolling units guarantees optimal wear properties
  • precision end products:
    According to your requirements, we can produce for you in the diameter range of 50 – 800 mm with the option of different gradients and with output plate strengths of 2.5 – 10mm.
  • Fully automated production:
    PRÄZI rolled augers are delivered ready for assembly.
  • extremely resistant to wear:
    Our powder-coated screw conveyors will stand up to the toughest wear and tear.
menu