Roller Cutter
Roller cutter, also known as raise boring equipment, is mainly used to excavate the ventilation shaft of the underground mine.
- Ultra Series Roller Cutters for Extremely Hard Rock
- Product Selection SXG5A5 + SXG5B5, customized design available
- Applicable Working Condition Rock hardness f≥14 (For cutterheads with reaming diameter over 3.5m, select model per product selection spectrum)
- Selection Features Suitable for extremely hard rock and highly abrasive strata
Bearing Structure
Ball lock bearing with high load capacity, built in pressure balance system
Seal Structure
Double metal sealed bearing assembly
Cutting Structure
Customized carbide insert with special strengthened treatment and cutting structure for hard to extremely hard or highly abrasive strata, scientific full ring layout of Type A+B roller cutters (double row at large end + double row at small end). On the premise of effectively mitigating carbide insert breakage, it improves carbide insert wear resistance and thus penetration efficiency, widely applicable to hard to extremely hard rock formations.
Recommended Operating Parameters
| No. | Operating Parameter | SXG5A5 | SXG5B5 |
|---|---|---|---|
| 1 | Applicable Rock Hardness | f ≥ 14 | f ≥ 14 |
| 2 | Recommended Single Roller Cutter Thrust Force | 160KN‑240KN | 160KN‑240KN |
| 3 | Maximum Allowable Thrust Force Per Cutter | 270KN | 270KN |
| 4 | Recommended Cutterhead Rotation Speed | 4~8 RPM | 4~8 RPM |
| 5 | Maximum Cutting Linear Speed | 75M/min | 75M/min |
- Pro Series Roller Cutters for Hard Rock
- Product Selection SXG5A4 + SXG5B4, customized design available
- Applicable Working Condition Rock hardness 10＜f＜14, or cutterhead with reaming diameter φ1.5~φ3.0m
- Selection Features Suitable for medium hard to hard rock strata (conventional homogeneous strata)
Bearing Structure
Ball lock bearing with built in pressure balance system
Seal Structure
Double metal sealed bearing assembly
Cutting Structure
Customized carbide insert and cutting structure for medium hard to hard strata, scientific full ring layout of Type A+B roller cutters (double row at large end + double row at small end), which improves penetration efficiency, widely applicable to medium hard to hard rock formations.
Recommended Operating Parameters
| No. | Operating Parameter | SXG5A4 | SXG5B4 |
|---|---|---|---|
| 1 | Applicable Rock Hardness | 10 ＜ f ＜ 14 | 10 ＜ f ＜ 14 |
| 2 | Recommended Single Roller Cutter Thrust Force | 100KN‑180KN | 100KN‑180KN |
| 3 | Maximum Allowable Thrust Force Per Cutter | 200KN | 200KN |
| 4 | Recommended Cutterhead Rotation Speed | 8~15 RPM | 8~15 RPM |
| 5 | Maximum Cutting Linear Speed | 90 m/min | 90 m/min |
- Alpha Series Roller Cutters for Medium-Hard Rock
- Product Selection SXG6A3 + SXG6B3, customized design available
- Applicable Working Condition Rock hardness 5≤f≤10, cutterhead with reaming diameter φ1.5~φ3.0m
- Selection Features Suitable for soft to medium hard strata
Bearing Structure
Ball lock bearing with built in pressure balance system
Seal Structure
Double metal sealed bearing assembly
Cutting Structure
Customized carbide insert and cutting structure for soft to medium hard strata, scientific full ring layout of Type A+B roller cutters (double row at large end + double row at small end), which reduces carbide insert breakage risk and improves penetration efficiency, widely applicable to soft to medium hard rock formations.
Recommended Operating Parameters
| No. | Operating Parameter | SXG6A3 | SXG6B3 |
|---|---|---|---|
| 1 | Applicable Rock Hardness | 5≤f≤10 | 5≤f≤10 |
| 2 | Recommended Single Roller Cutter Thrust Force | 80KN‑150KN | 80KN‑150KN |
| 3 | Maximum Allowable Thrust Force Per Cutter | 180KN | 180KN |
| 4 | Recommended Cutterhead Rotation Speed | 10~18 RPM | 10~18 RPM |
| 5 | Maximum Cutting Linear Speed | 90 M/min | 90 M/min |
- Recommended Cases of Complex Formations
- Product Selection SXG7A47B4, customized design available
- Applicable Working Condition Rock hardness f≥12, cutterhead with reaming diameter ≥ φ3.5m
- Selection Features Multi row insert structure suitable for hard strata, high quartz content and large diameter cutterheads
Bearing Structure
Ball lock bearing with built in pressure balance system
Seal Structure
Double metal sealed bearing assembly
Cutting Structure
6 row and 7 row multi row carbide insert layout design, scientific full ring alternating layout of Type A+B roller cutters (double row at large end + double row at small end), which reduces carbide insert breakage risk and improves penetration efficiency, widely applicable to medium hard to hard rock formations.
Recommended Operating Parameters
| No. | Operating Parameter | SXG7A4 | SXG7B4 |
|---|---|---|---|
| 1 | Applicable Rock Hardness | f≥12 | f≥12 |
| 2 | Recommended Single Roller Cutter Thrust Force | 160KN‑240KN | 160KN‑240KN |
| 3 | Maximum Allowable Thrust Force Per Cutter | 270KN | 270KN |
| 4 | Recommended Cutterhead Rotation Speed | 4~8 RPM | 4~8 RPM |
| 5 | Maximum Cutting Linear Speed | 90 M/min | 90 M/min |
- Recommended Selection of Center Cutters
- Product Selection SXG12C4, customized design available
- Applicable Working Condition Raiseboring cutterhead equipped with only one center roller cutter
- Selection Features Widely applicable to raiseboring cutterheads with one center cutter installed; It is also widely used in reverse circulation engineering bridge cutters and double wheel milling cutters.
Bearing Structure
Ball lock bearing with built in pressure balance system
Seal Structure
Double metal sealed bearing assembly
Cutting Structure
Multi row random carbide insert layout with optimized full ring arrangement, which reduces carbide insert breakage risk and improves penetration efficiency, widely applicable to cutterheads fitted with a single center roller cutter.