- Product category：Conventional PDC Bits
- Name：12-1/4"STS915
- Product Type：12713
- Hits：1691
Introduction
12-1/4" STS915/ S123
Recommended Operating Parameters
| Blade Count | 5 Straight Blades |
| Primary Cutter Size | Ф19 mm |
| Face Cutters（Count） | Ф19 mm ( 18 ) |
| Cone Cutters（Count） | Ф19 mm ( 9 ) |
| Gauge Cutters（Count） | Ф19 mm ( 8 ) |
| Back-Up Cutters（Count） | / |
| Nozzles | 7 Standard Series (SP) |
| Gauge Length | 3", Options available |
| Junk Slot Area | 39 in2 |
| Bit Connection | 6-5/8" API REG |
| Bit Length | Make-Up: 13.5" Overall: 18.5" |
| Fishing Neck | Diameter: 8" Length: 5.2" |
Recommended Operating Parameters
| Flow Rate | 38~62 LPS |
| Rotary Speed | 60~300 RPM |
| Weight-on-Bit | 20~160 KN |
| Max. Weight-on-Bit | 180 KN |
| Make-Up Torque | 49.6~51.4KN.m |