1. Adopt tungsten carbide with a unique button shape.
2. Use wear-resistant buttons to minimize the wear of the roller cutter.
3. The bearing structure is a pair of tapered roller bearings.
4. Use high-quality metal seals.
5. The roller cutters can be repaired and customized.
1. Applicable rock hardness: protodyakonov scale of hardness 11≤f≤15.
2. Recommended WOB of roller cutter: 100KN~200KN.
3. Maximum WOB (weight on bit): 245KN.
4. Recommended cutterhead rotation speed: 3-15 RPM.
5. Maximum linear velocity: 90m/min.
NO. | Model | A | B | C | E | F | Rows | Taper |
1 | LT347521-00A | 336 | 246 | 347 | 76 | 76 | 5 | 20° |
NO. | Model | A | B | C | E | F | Rows | Taper |
2 | LT347521-00B | 336.2 | 246 | 346.7 | 76 | 76 | 5 | 20° |
NO. | Model | A | B | C | D | E | F | Rows | Taper | |
3 | LT340420-00 | 335 | 239.5 | 340 | 40 | 80 | 80 | 4 | 20° | |
4 | LT340520-00B | 335 | 239.5 | 340 | 40 | 82 | 82 | 5 | 20° | |
NO. | Model | A | B | C | D | E | F | Rows | Taper | |
5 | LT320520-00 | 331 | 227 | 320 | 45 | 86 | 80 | 5 | 20° | |
6 | LT320620-00 | 331 | 227 | 320 | 45 | 86 | 80 | 6 | 20° | |