As standard, our sieve belts are equipped with Class C spring steel rods. However, we can also manufacture the rods from CrSi steel, AISI 304 or 316 stainless steel, or fiberglass. However, alternative materials can be applied in consultation, ensuring the final sieve belt perfectly matches your specific requirements. Without the use of rod coating, we can create sieving gaps down to a minimum of 5 mm. By utilizing rod coating, we can achieve a sieving gap as small as 2 mm.

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Rod-to-rod measurement (Stokmaat)

To determine the correct width of the sieve belt, it is essential that the riveted rods have the accurate rod-to-rod measurement. The rod-to-rod measurement is the distance between the two outermost rivet holes, measured center-to-center (C.T.C.). When ordering individual riveted rods, it is also important to specify the rod-to-rod measurement as well as the hole pitch at the ends of the rod.
Unless otherwise specified, the distance between the two holes at the ends is 20 mm for a 50 mm traction belt width. For traction belt widths of 60 mm or more, this distance is 32 mm. Deviations from these standards are available upon request, in which case the hole pitches can be set to 24 mm or 30 mm, respectively.

Choice of Materials

Spring Steel
As standard, our sieve belts are equipped with Class C spring steel rods (DIN 17228). However, we can also manufacture the rods from special alloy steel (CrSi), AISI 304 or 316 stainless steel, or fiber-reinforced plastic (fiberglass). However, alternative materials can be applied in consultation, ensuring the final sieve belt perfectly matches your specific requirements.

CrSi
For applications in extremely heavy-duty conditions, such as in stone pickers, we manufacture the rods from extra high-strength material. For this purpose, we utilize chromium-silicon steel (CrSi). CrSi steel is harder and tougher than Class C spring steel. Furthermore, this steel possesses all the properties of ‘standard’ spring steel. CrSi steel is available in diameters of 8, 9, 10, 11, and 12 mm. A major advantage of CrSi steel is that it is highly suitable for welding.

Stainless Steel (RVS)
For applications in water or wet environments, stainless steel is frequently used. In that case, all metal components of the sieve belt will be manufactured using this material. In this case, both the rods and the fastening materials are made of AISI 304 stainless steel. Upon request, the rods can also be manufactured from AISI 316 stainless steel. However, in that case, the fastening materials will remain AISI 304 stainless steel. For stainless steel rods, any attachment to the center belt can only be achieved using center brackets. Stainless steel rods are available in diameters of 6, 8, 10, and 12 mm.

Fiberglass
To reduce weight, fiberglass rods can be used in certain applications. A sieve belt with fiberglass rods weighs up to approximately 50% less than a comparable sieve belt with steel rods. An additional advantage of these fiberglass rods is the fact that they do not rust. These rods are available in 6, 8, and 10 mm.