Roller

The roller is fitted at the end of a cross-beam grate and runs along the guide rail with the chain, spreading the weight of the cross beams and grate surface onto the track. We supply this part, matched to the original machine dimensions together with cross beams, chain links and chain shafts.

Its place in the travel mechanism

The replaceable parts of a cross-beam grate include cross beams, grate bars, support parts, connecting pins and wear plates; rollers fall in the support category and handle rolling and guidance at the beam ends. In operation, rollers, chain links and chain shafts form the travel pair, and once worn, the grate tends to run unevenly or drift off track. During maintenance, rollers, chain shafts and connecting pins are usually checked together.

Materials and heat resistance

Rollers can use Cr25Ni20 or Cr26Ni12 cast alloy steel, structural parts use standard carbon steel, and the specific grade follows the original drawings and furnace temperature. Typical heat resistance of castings from the partner factory is listed below:

Machining and inspection

Rollers go through precision casting and machining, and machine tools guarantee the mating dimensions and alignment. The product meets technical standard NB/T 47050-2016, and material composition analysis, dimensional verification and performance testing are completed before delivery.

How we supply

Rollers ship directly from the partner factory. We can provide selection and spare-part matching, with dimensions and materials made to customer drawings before delivery.