QL50 Shank
Mincon has a comprehensive range of DTH Drill Bits to suit all types of applications and drilling processes. There are a number of different drill bit head designs for the QL50 shank and Mincon Sales Technicians can work with you to determine the ideal design for your application.
Key Features and Benefits
- Manufactured from premium alloy steels.
- Proprietary heat treatment processes to provide maximum service life and durability.
- Compressive residual stress layer added to improve metal fatigue resistance.
For more information:
+40 314 253 800
info@romned.ro
Ron van Dam
CEO
| Specifications | Metric | Imperial |
| Minimum Hole Size | 130mm | 5″ |
| Number of Splines | 12 | |
| Height of Foot Valve Above Strike Face | 54.4mm | 2.030″ |
| Length of Shank | 240mm | 9.47″ |
| Bearing Surface Diameter | 76.65mm | 3.018″ |
| Mincon DTH Hammer(s) | MP50, MP55, 5DHQL |
Note: The Part Numbers below require the Carbide Insert type code to be added on the end to complete them. For a combination of carbide inserts use the gauge row code first and then the face code.
| Carbide Insert Codes | |
| Dome (Spherical) | D |
| Ballistic | B |
| Semi-Ballistic (Parabolic) | P |
| Conical (Spike) | S |
| Dome PCD | Y |
| Diameter | Face Type | Part Number | No. x Button Dia (inch) | Flushing holes | Weight Approx. | ||||
| mm | inch | Outer | Inner | Front | Kgs. | Lbs. | |||
| 127 | 5 | Concave | 50QL50C58 | 8 – 5/8″ | 4 – 1/2″ | 3 – 1/2″ | 2 | 15.9 | 35 |
| 130 | 5 1/8″ | Concave | 51QL50C58 | 8 – 5/8″ | 4 – 1/2″ | 3 – 1/2″ | 2 | 15.9 | 35 |
| 133 | 5 1/4″ | Concave | 52QL50C58 | 8 – 5/8″ | 4 – 9/16″ | 3 – 9/16″ | 2 | 16.3 | 36 |
| 140 | 5 1/2″ | Concave | 54QL50C58 | 8 – 5/8″ | 4- 9/16″ | 4- 9/16″ | 2 | 17.3 | 38 |
| 140 | 5 1/2″ | Concave | 54QL50C59 | 9 – 5/8″ | 6 – 9/16″ | 6- 9/16″ | 3 | 17.3 | 38 |
| 140 | 5 1/2″ | Flat Face | 54QL50F58 | 8 – 5/8″ | 7 – 5/8″ | 2 | 17.3 | 38 | |
| 140 | 5 1/2″ | Flat Face | 54QL50F59 | 9 – 5/8″ | 9 – 9/16″ | 3 | 17.3 | 38 | |
| 140 | 5 1/2″ | Convex | 54QL50V59 | 9 – 5/8″ | 6- 9/16″ | 4- 9/16″ | 3 | 17.3 | 38 |
| 146 | 5 3/4″ | Concave | 56QL50C58 | 8 – 5/8″ | 4- 5/8″ | 4- 5/8″ | 2 | 17.7 | 39 |
| 140 | 5 3/4″ | Concave | 56QL50C59 | 9 – 5/8″ | 6 – 9/16″ | 6- 9/16″ | 3 | 17.7 | 39 |
| 146 | 5 3/4″ | Flat Face | 56QL50F58 | 8 – 5/8″ | 8 – 5/8″ | 2 | 17.7 | 39 | |
| 140 | 5 3/4″ | Convex | 56QL50V59 | 9 – 5/8″ | 3 – 5/8″ | 5 – 5/8″ | 3 | 17.7 | 39 |
| 149 | 5 7/8 | Concave | 60QL50C58 | 8 – 5/8″ | 4 – 5/8″ | 4 – 5/8″ | 2 | 18.6 | 41 |
| 152 | 6 | Concave | 60QL50C58 | 8 – 5/8″ | 4 – 5/8″ | 4 – 5/8″ | 2 | 18.6 | 41 |