South Mining Supply — soluciones en perforación
DTH

SM40 - HD (DHD 340)

Medium-diameter SM40-HD (DHD 350) DTH hammer.

Technical catalog

SM40-HD technical catalog

Hover over a number on the image or a row in Parts detail to link both views of SM40 - HD (DHD 340).

SM40-HD: assembly and exploded view
Assembly / exploded view · Hover to link with the detail
Parts detailWeight kgPart no.
1、Top Sub8.70SM4501
2、Carbide Button0.16SM4502
3、“O”-Ring0.01SM4503
4、Check Valve0.42SM4504
5、Spring0.04SM4505
6、Compression Buffer0.04SM4506
7、Air Distributor2.20SM4507
8、“O”-Ring0.01SM4508
9、Internal Cylinder2.30SM4509
10、Piston8.80SM4510
11、External Cylinder14.80SM4511
12、“O”-Ring0.01SM4512
13、Stop Ring0.20SM4513
14、Drive Chuck3.40SM4514
15、Drill Bit8.30SM4515
Technical data sheet
Length (without bit)
1030 mm
Weight (without bit)
39.20 kg
Outside diameter
φ99 mm
Bit Shank
DHD 340
Bit range
φ110 — φ135
Top thread
API 2 ⅜" Reg
Working pressure
0.5 — 2.5 MPa
Impact rate at 17 bar
27 Hz
Recommended rotation speed
25 — 40 rpm
Air consumption
10 bar
6.0 m³/min
18 bar
10.8 m³/min
24 bar
15.0 m³/min
SM40 - HD (DHD 340)

Features

The current model's column is highlighted. Hover over another column to compare or click any cell to go to that product.

DTH Hammers 3" to 12"

MODELSM35 - HDSM40 - HDSM50 - HDSM60 - HD/XLSM60 - QLSM80 - HDSM80 - QLSM60-HDW QL
TOP THREAD2 3/8" REG2 3/8" REG3 1/2" REG3 1/2" REG3 1/2" REG4 1/2" REG4 1/2" REGBECO 3
TUNGSTEN CARBIDE INSERTNOYESYESYESYESYESYESYES
OUTSIDE DIAMETER81 mm99 mm125 mm142 mm146 mm180 mm184 mm150 mm
LENGTH W/O BIT930 mm1030 mm1170 mm1248 / 1308 mm (XL)1057 mm1487 mm1434 mm1212 mm
TOTAL WEIGHT24,5 kg39,2 kg71,5 kg98 / 102 kg (XL)95 kg188 kg182 kg95 kg (sin bit)
PISTON WEIGHT5,4 kg8,8 kg17,5 kg23,6 kg20,44 kg41,80 kg39,80 kg23,6 kg
SHANKDHD 3.5DHD 340DHD 350DHD360 / SM60XLQL60DHD 380QL80QL60
AIR CONSUMPTION 10 BAR4,8 m³/min6 m³/min8,7 m³/min10,5 m³/min10,3 m³/min11,4 m³/min11,2 m³/min10,5 m³/min
AIR CONSUMPTION 18 BAR9,6 m³/min10,8 m³/min16,8 m³/min20,4 m³/min19,9 m³/min22,2 m³/min21,8 m³/min20,4 m³/min
AIR CONSUMPTION 24 BAR12,6 m³/min15 m³/min23,4 m³/min28,5 m³/min27,3 m³/min29,7 m³/min29,4 m³/min28,5 m³/min

DTH Hammers 3" to 12"

12 filas · scroll para ver el resto

MODELSM35 - HDSM40 - HDSM50 - HDSM60 - HD/XLSM60 - QLSM80 - HDSM80 - QLSM60-HDW QL
TOP THREAD2 3/8" REG2 3/8" REG3 1/2" REG3 1/2" REG3 1/2" REG4 1/2" REG4 1/2" REGBECO 3
TUNGSTEN CARBIDE INSERTNOYESYESYESYESYESYESYES
OUTSIDE DIAMETER81 mm99 mm125 mm142 mm146 mm180 mm184 mm150 mm
LENGTH W/O BIT930 mm1030 mm1170 mm1248 / 1308 mm (XL)1057 mm1487 mm1434 mm1212 mm
TOTAL WEIGHT24,5 kg39,2 kg71,5 kg98 / 102 kg (XL)95 kg188 kg182 kg95 kg (sin bit)
PISTON WEIGHT5,4 kg8,8 kg17,5 kg23,6 kg20,44 kg41,80 kg39,80 kg23,6 kg
SHANKDHD 3.5DHD 340DHD 350DHD360 / SM60XLQL60DHD 380QL80QL60
AIR CONSUMPTION 10 BAR4,8 m³/min6 m³/min8,7 m³/min10,5 m³/min10,3 m³/min11,4 m³/min11,2 m³/min10,5 m³/min
AIR CONSUMPTION 18 BAR9,6 m³/min10,8 m³/min16,8 m³/min20,4 m³/min19,9 m³/min22,2 m³/min21,8 m³/min20,4 m³/min
AIR CONSUMPTION 24 BAR12,6 m³/min15 m³/min23,4 m³/min28,5 m³/min27,3 m³/min29,7 m³/min29,4 m³/min28,5 m³/min
WORKING PRESSURE0.5 - 2.5 MPa0.5 - 2.5 MPa0.5 - 2.5 MPa0.5 - 2.5 MPa0.5 - 2.5 MPa0.5 - 2.5 MPa0.5 - 2.5 MPa0,5 - 2,5 MPa
IMPACT FREQ. 17 BAR28 Hz27 Hz25 Hz23 Hz25 Hz20 Hz21 Hz23 Hz

Applications

  • Mining
  • Water wells
  • Anchoring
  • Micropiles

Compatible DTH bits

Brocas recomendadas para SM40 - HD (DHD 340)

Relación catálogo 2026: shank DHD 340. Diámetros tolerados por este martillo.

  • 108 mm
  • 110 mm
  • 114 mm
  • 121 mm
  • 127 mm
  • 140 mm
  • 149 mm
  • 152 mm
Ver familia dhd 35 340Ver familia dhd 340 350View small-diameter bits

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".