Chains for suspended conveyors
Due to increased security needs, chains used in suspending conveyors need to behave in a strictly defined way - prior to breaking, a minimal 20% elongation is expected of the chain. This "elasticity" is guaranteed by chains manufacutred according to the DIN 20 637 and DIN 22 252-1 norms.
Mechanical properties of chains manufactured according to DIN 20 637
| Chain size | Production testing force | Testing force | Elongation at testing force | Breaking force | Elongation at breaking force | Deflection | |
| d x t mm | kN min. | kN max. | kN | % max. | kN | % min. | f mm min. |
| 16 x 80 | 60 | 100 | 60 | 1,6 | 180 | 20 | 21 |
| 18 x 90 | 100 | 140 | 100 | 1,6 | 250 | 20 | 23 |
Size chart for DIN 20 637 chains
| Chain size | Thickness | Length | Width | Weight |
Material according to DIN 17 115 |
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| d x t mm | d mm | tolerance mm | t mm | tolerance mm | inside b1 min. mm | outside b2 max. mm | kg/m | |
| 16 x 80 | 16 | +/- 0,6 | 80 | +/- 1,5 | 22,4 | + 3 /- 0 | 4,7 | 15Mn3Al |
| 18 x 90 | 18 | +/- 0,4 | 90 | +/- 1,5 | 25 | + 3 /- 0 | 6 | 21Mn5 |
Mechanical properties of chains manufactured according to 22 252-1
| Chain size | Production testing force | Testing force | Elongation at testing force | Breaking force | Elongation at breaking force | Deflection | |
| d x t mm | kN min. | kN max. | kN | % max. | kN | % min. | f mm min. |
| 14 x 50 | 154 | - | 154 | - | 194 | 14 | 14 |
| 18 x 64 | 254 | - | 254 | - | 321 | 14 | 18 |
Size chart for DIN 22 252-1 chains
| Chain size | Thickness | Length | Width | Weight |
Material according to DIN 17 115 |
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| d x t mm | d mm | tolerance mm | t mm | tolerance mm | inside b1 min. mm | outside b2 max. mm | kg/m | |
| 14 x 50 | 14 | +/- | 50 | +/- | - | - | - | - |
| 18 x 64 | 18 | +/- | 64 | +/- | - | - | - | - |