| Chain No. | Pitch | Roller diameter | Width between inner plates | Pin diameter | Pin length | Inner plate depth | Plate thickness | Weight per meter | |
| P | d1 max | b1 min | d2 max | L max | Lc max | h2 max | t/T max | q | |
| mm | mm | mm | mm | mm | mm | mm | mm | Kg/m | |
| 81X | 66.27 | 23.00 | 27.00 | 11.10 | 49.0 | 53.5 | 28.50 | 4.00 | 3.78 |
