No. C-1, Chuntianyuan, Ganjingzi District, Dalian City, Liaoning Province, P.R. China
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Side seal for cross-beam grate

Side seal for cross-beam grate

We supply side seals among cross-beam grate spare parts, fitted at the sealing positions on both sides of the grate, in sizes and quantities set by the customer.

Side seals fit into the gap between the grate surface and the side wall. Their job is to stop air from bypassing so that the supply air actually passes through the combustion layer. We supply this spare part, and it can be supplied as a set with grate plates, chain links, pin shafts and similar items.

Seal position and function

In a flake-type chain grate system, the side seal is the part that prevents air bypass and is fixed at the edges on both sides of the grate. Once the sealing area wears, air leakage rises, and the excess air and slagging behaviour in the furnace change with it. Together with the adjacent side liner and clamping plates, it maintains the clearance at the grate edge.

Material and replacement interval

Spare parts for flake-type grates differ in typical service life depending on material, and side seals are usually made of ductile iron or alloy steel. The specifications and service life are compared below:

PartMaterialTypical service life
Grate plateCr25Ni20 / Cr26Ni1212-24 months
Chain linkCr25Ni2012-18 months
Pin shaftCr25Ni20 / Inconel8-15 months
Side sealDuctile iron / alloy steel18-30 months

Dimensions and tolerances

All parts are made to OEM dimensions and tolerances and shipped after precision casting and machining. The product meets technical standard NB/T 47050-2016; dimensions and material can be customised to customer requirements, and we also provide selection advice and matching of spare parts.

Request a Quote

Provide the following information for an accurate quotation:

  • Boiler capacity (t/h)
  • Fuel type
  • Grate width and length
  • Existing drawings or photos
  • Required quantity
  • Material requirements
  • Destination country/port