Heavy flake roller
The heavy-duty large-flake roller is the chain support part of a large-flake grate in large industrial boilers. It travels with the chain, and we supply replacement parts from our partner factory.
Grate capacity it suits
Heavy-duty large-flake spare parts are made for the large-flake grate systems of large industrial boilers and are designed for grates of 35 t/h to 160 t/h capacity. The roller sits in the flake chain assembly and provides the support and guidance for the running chain.
Structure and machining
The roller uses an extra-thick cast section to extend service life, and its mating surfaces are precision machined so that they interlock and fit correctly with the adjacent parts. The heavy-duty replacement parts in this series also include heavy flake grate bars, side seals, splints and replaceable wear strips. The roller, wear strips and splints all sit in load-bearing positions of the flake chain assembly, so they are usually checked together during maintenance.
Material options and parameters
| Item | Parameter |
|---|---|
| Heat-resistant alloy options | Cr25Ni20 / Cr26Ni12 |
| Cast section | Extra-thick cast section |
| Mating surface | Precision machined |
The capacity range in the table above is the design range of 35 t/h to 160 t/h for the grate; the actual match follows the customer’s grate model and drawing.
Material system and matching supply
The material range at our partner factory covers HT200, HT250, RTSi5, RQTSi5, RTCr16, RTCr, RTCr2, RTCr5 and RTCr2Si4Mo, with customisation to customer requirements, and the products meet the NB/T 47050-2016 technical standard. Please provide the grate model or drawing, and we will check the roller dimensions and quantity on that basis and quote.