BIT 38 MM SR28(R28) for drifting ,tunneling and stone quarrying
Made from high alloy steel and tungsten carbide as same grade as internationally well-known brand
Apply “hot (thermal) -insertion” processing procedure to insert the buttons as same as internationally well-known brand
Entire CNC processing procedure ensure the quality consistency
Military grade requirements of heat-treatment guarantee durability Fast penetration rates, and straight and clean hole quality. Long life of drilling holes.
BIT -38MM -SR28(R28) is drilling accessories for fortification R28 series Threaded drill bits used in drifting and tunneling, or dimensional natural stone quarrying
Rock drilling tools manufacturer OED provides a wide of threaded button bit as per different thread type, diameter, skirt body, face, and carbide shape as for your drilling job.
BIT 38 MM SR28(R28) Drilling accessories for fortification
Thread: SR28 Diameter: 38mm
Product code: 125-5038-27,39-20(Atlas Copco)
No. Of buttons: 7 | Gauge buttons × gauge button diameter (mm): 5×9
Center buttons × center button diameter (mm): 2×7
Gauge buttons angle° 30° | Side flushing hole 1
Center flushing hole 1 | Weight approx: 0,5 kg.
R22, R25, R28 Threaded Button Bits of rock drill bits.
Diameter 40mm, 41mm, 43mm, 45mm.
7 Semi-ballistic buttons, SR28 Threaded Drill Bit.
R28 series Threaded drill bits used in drifting and tunneling, or dimensional natural stone quarrying. To match shank rod, and MM or MF Hex drifter rod for light-duty top hammer such as Drift HEX rod : R32-H28-SR28(S28) 2600mm,3100mm,3700mm
R28-38 mm, 43mm, 45mm, with MM Drift HEX rod : R32-H28-SR28(S28) 2600mm,3100mm,3700mm work for copper mine in Peru.
| Diameter | Product No. | Product code | No. of buttons | Buttons × button diameter (mm) | Flushing hole | Weight approx. kg |
| inch | Gauge | Centre | Side | Centre | |
| BUTTON BIT - Spherical buttons |
| 15∕16 | 90510448 | 102-5033-17,39-20 | 7 | 5×7 | 2×7 | 1 | 1 | 0,4 | |
| 13∕8 | 90505181 | 102-5035-27,39-20 | 7 | 5×9 | 2×7 | 1 | 1 | 0,5 | |
| 115∕32 | 90505295 | 102-5037-27,39-20 | 7 | 5×9 | 2×7 | 1 | 1 | 0,4 | |
| 115∕32 | 90513899 | 102-5037-99,39-20 | 7 | 5x9 | 2x7 | 1 | 1 | 0,5 | |
| 1½ | 90505179 | 102-5038-27,39-20 | 7 | 5×9 | 2×7 | 1 | 1 | 0,6 | |
| 1½ | 90510206 | 102-5038-56,39-20 | 6 | 4×9 | 2×8 | 2 | 1 | 0,5 | |
| 15∕8 | 90505175 | 102-5041-27,39-20 | 7 | 5×9 | 2×8 | 1 | 1 | 0,6 | |
| 15∕8 | 90510207 | 102-5041-56,39-20 | 6 | 4×9 | 2×9 | 2 | 1 | 0,6 | |
| 1¾ | 90505145 | 102-5045-27,39-20 | 7 | 5×11 | 2×8 | 2 | 1 | 0,7 | |
| 1¾ | 90510208 | 102-5045-56,39-20 | 6 | 4×11 | 2×9 | 2 | 1 | 0,6 | |
| 17∕8 | 90513912 | 102-5048-27,39-20 | 7 | 5x11 | 2x9 | 2 | 1 | 1,0 | |
| BUTTON BIT - Ballistic buttons |
| 15∕16 | 90510274 | 102-5033-17-67,39-20 | 7 | 5×7 | 2×7 | 1 | 1 | 0,4 | |
| 15∕16 | 90514118 | 102-5033-41-67,39-20 | 7 | 5x8 | 2x7 | 1 | 1 | 0,4 | |
| 13∕8 | 90509723 | 102-5035-27-67,39-20 | 7 | 5×9 | 2×7 | 1 | 1 | 0,5 | |
| 115∕32 | 90513900 | 102-5037-99-67,39-20 | 7 | 5x9 | 2x7 | 1 | 1 | 0,5 | |
| 1½ | 90505180 | 102-5038-27-67,39-20 | 7 | 5×9 | 2×7 | 1 | 1 | 0,5 | |
| 15∕8 | 90505176 | 102-5041-27-67,39-20 | 7 | 5×9 | 2×8 | 1 | 1 | 0,6 | |
| 15∕8 | 90510662 | 102-5041-27-30-67,39-20 | 7 | 5×9 | 2×8 | 1 | 1 | 0,8 | |
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BIT 38MM SR28 R28 Rock Drilling Tools For Drifting Tunneling And Stone Quarrying Images
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