The chain of coal washer is mostly used for cleaning and screening of coarse materials in mines and coal yards, which requires high wear resistance.
Through structural optimization design and special surface hardening technology., the service life of the chain is signifcantly prolonged.
| Chain No. | Pitch | Bush diameter | Width between inner plates | Pin diameter | Pin length | Plate depth | Plate thickness | Tensile strength | Average tensile strength | Weight per meter | |
| P | d1 max | b1 min | d2 max | L1 max | L2 max | h2 max | t/T max | Q min | Q0 min | q | |
| mm | mm | mm | mm | mm | mm | mm | mm | kN/lbf | kN | kg/m | |
| *P78 | 78.1 | 31.75 | 34.50 | 19.05 | 128.5 | 90.5 | 44.5 | 9.6 | 140.0/31818 | 166.88 | 14.09 |
| P78F1 | 78.1 | 31.75 | 31.75 | 19.05 | 122.0 | 90.5 | 44.5 | 12.7/8.0 | 140.0/31818 | 166.88 | 14.22 |
| *P78F2 | 78.1 | 31.75 | 31.75 | 19.05 | 129.0 | 90.5 | 44.5 | 12.7/8.0 | 140.0/31818 | 166.88 | 14.59 |
| *P78F3 | 78.1 | 31.75 | 31.25 | 19.05 | 124.0 | 90.5 | 44.5 | 12.7/8.0 | 140.0/31818 | 166.88 | 14.60 |
| #P78F5 | 78.1 | 31.75 | 34.50 | 19.05 | 124.0 | 91.0 | 44.5 | 9.7 | 140.0/81818 | 166.88 | 14.75 |
| #P78F6 | 78.1 | 31.75 | 32.00 | 20.70 | 127.0 | 93.0 | 46.0 | 10.0 | 140.0/31818 | 166.88 | 15.40 |
| *Connecting link with solid long cotter #Connecting link with T pin | |||||||||||
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