Main application
Mining
DTH hammers, tricone bits, RC and drill string for continuous operation in underground and open-pit mining.
DTH
SM50 - HD
SM50-HD DTH hammer for larger-section drilling.
Technical catalog
SM50-HD technical catalog
Hover over a number on the image or a row in Parts detail to link both views of SM50 - HD.
| Parts detail | Weight kg | Part no. |
|---|---|---|
| 1、Top Sub | 13.20 | SM55C01 |
| 2、Carbide Button | 0.18 | SM55C02 |
| 3、“O”-Ring | 0.01 | SM55C03 |
| 4、Check Valve | 0.80 | SM55C04 |
| 5、Spring | 0.04 | SM55C05 |
| 6、Compression Buffer | 0.06 | SM55C06 |
| 7、Air Distributor | 3.80 | SM55C07 |
| 8、“O”-Ring | 0.01 | SM55C08 |
| 9、Internal Cylinder | 4.00 | SM55C09 |
| 10、Piston | 17.50 | SM55C10 |
| 11、External Cylinder | 25.00 | SM55C11 |
| 12、“O”-Ring | 0.01 | SM55C12 |
| 13、Stop Ring | 0.30 | SM55C13 |
| 14、Drive Chuck | 6.40 | SM55C14 |
| 15、Drill Bit | 16.0 | SM55C15 |
Technical data sheet
Length (without bit)
1170 mm
Weight (without bit)
71.5 kg
Outside diameter
φ125 mm
Bit Shank
DHD 350
Bit range
φ135 — φ155
Connection thread
API 3 1/2" Reg
Working pressure
0.5 — 2.5 MPa
Impact rate at 17 bar
25 Hz
Recommended rotation speed
20 — 30 rpm
Air consumption
10 bar
8.7 m³/min
18 bar
16.8 m³/min
24 bar
23.4 m³/min
Features
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DTH Hammers 3" to 12"
| MODEL | SM35 - HD | SM40 - HD | SM50 - HD | SM60 - HD/XL | SM60 - QL | SM80 - HD | SM80 - QL | SM60-HDW QL |
|---|---|---|---|---|---|---|---|---|
| TOP THREAD | 2 3/8" REG | 2 3/8" REG | 3 1/2" REG | 3 1/2" REG | 3 1/2" REG | 4 1/2" REG | 4 1/2" REG | BECO 3 |
| TUNGSTEN CARBIDE INSERT | NO | YES | YES | YES | YES | YES | YES | YES |
| OUTSIDE DIAMETER | 81 mm | 99 mm | 125 mm | 142 mm | 146 mm | 180 mm | 184 mm | 150 mm |
| LENGTH W/O BIT | 930 mm | 1030 mm | 1170 mm | 1248 / 1308 mm (XL) | 1057 mm | 1487 mm | 1434 mm | 1212 mm |
| TOTAL WEIGHT | 24,5 kg | 39,2 kg | 71,5 kg | 98 / 102 kg (XL) | 95 kg | 188 kg | 182 kg | 95 kg (sin bit) |
| PISTON WEIGHT | 5,4 kg | 8,8 kg | 17,5 kg | 23,6 kg | 20,44 kg | 41,80 kg | 39,80 kg | 23,6 kg |
| SHANK | DHD 3.5 | DHD 340 | DHD 350 | DHD360 / SM60XL | QL60 | DHD 380 | QL80 | QL60 |
| AIR CONSUMPTION 10 BAR | 4,8 m³/min | 6 m³/min | 8,7 m³/min | 10,5 m³/min | 10,3 m³/min | 11,4 m³/min | 11,2 m³/min | 10,5 m³/min |
| AIR CONSUMPTION 18 BAR | 9,6 m³/min | 10,8 m³/min | 16,8 m³/min | 20,4 m³/min | 19,9 m³/min | 22,2 m³/min | 21,8 m³/min | 20,4 m³/min |
| AIR CONSUMPTION 24 BAR | 12,6 m³/min | 15 m³/min | 23,4 m³/min | 28,5 m³/min | 27,3 m³/min | 29,7 m³/min | 29,4 m³/min | 28,5 m³/min |
Applications
- Mining
- Water wells
- Anchoring
- Micropiles
Compatible DTH bits
Brocas recomendadas para SM50 - HD
Relación catálogo 2026: shank DHD 350. Diámetros tolerados por este martillo.
- 140 mm
- 149 mm
- 152 mm
- 165 mm
Highlights
- High impact frequency and good performance at standard working pressures.
- Compatible with industry DHD and QL standards.
- South Mining Supply spare parts and technical support.
High-performance percussive drilling equipment, including down-the-hole (DTH) and reverse circulation (RC) systems, designed to maximize energy transfer to the bit. They operate efficiently across a range of pressures and are available in multiple configurations covering drilling diameters from 3" to 38".