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Air leg and Small Hole Drilling Tools

Air Leg and Small Hole drilling tools are essential equipment used in mining, construction, geotechnical engineering, and tunneling. These tools are designed to drill holes in the ground for purposes such as exploration, rock excavation, and installation of support structures.

The required drilling tool depends on factors such as the type of rock or soil, required hole diameter, depth of drilling, and specific project requirements.

Black Diamond Drilling works closely with it’s clients to deliver a World Class product that meets their project needs.

H22 (7/8") Tapered Tools

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
H22 12° Taper Drill Bits
BITSButtons,
mm
Flushing
Hole, mm
AngleDimensions,
D
Part NumberCompatibility
Front
No Size
Gauge
No Size
Front
No Size
Gauge
No Size
ImperialMetric
Cross Bit
Black Diamond Drilling Top Hammer Air leg tools THU-N45X-R321×62×4.51 1/4″32mmTHU-HH-TCB32-H22/127770-9032-42
90503024
90512643
1×6.352×4.51 3/8″45mmTHU-HH-TCB45-H22/127770-9045-42
90503069
Button Bit
Black Diamond Drilling Top Hammer Air Leg tools THU-HH-TBB28FF-H22-121×74×71×51×535°1 1/8″28mmTHU-HH-TBB28FF-H22/127795-6428-B48
90510695
90516429
1×74×71×51×535°1 3/16″30mmTHU-HH-TBB30FF-H22/127795-6430-B48
90510181
Button Bit
Black Diamond Drilling Top Hammer Air Leg tools THU-N33FF-R25-parabolic2×75×72×41×440°1 1/4″32mmTHU-HH-TBB32FF-H22/127795-5232-B48
90509650
90509841
2×75×82×41×440°1 3/8″35mmTHU-HH-TBB35FF-H22/127795-5235-B48
90509535
2×75×92×51×540°1 1/2″38mmTHU-HH-TBB38FF-H22/127795-5238-B48
90512658
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.

 

H22 12° Taper Drill Rods
DRILL RODSDimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
Tapered rod, shank 22 x 108, carburized
Black Diamond Drilling 22mm Shank Air leg 22-108-Carburised2′610mm7/8″22mmTHU-HHTR-H22/6107870-6106-11
90504832
3′910mm7/8″22mmTHU-HHTR-H22/910
4′1220mm7/8″22mmTHU-HHTR-H22/12207870-6112-11
90505433
5′1600mm7/8″22mmTHU-HHTR-H22-1600
6′1830mm7/8″22mmTHU-HHTR-H22/18307870-6118-11
90505434
8′2440mm7/8″22mmTHU-HHTR-H22/24407870-6124-11
90505436
10′3050mm7/8″22mmTHU-HHTR-H22/30507870-6131-11
90505437
Tapered rod, shank 22 x 108, Hardened
Black Diamond Drilling 22mm Shank Air leg 22-108-Carburised8′2440mm7/8″22mmTHU-H22-2440H7870-1124-11
90504841
10’6″3200mm7/8″22mmTHU-H22-3200H7870-1132-11
90504844
13′ 1 1/2″4000mm7/8″22mmTHU-H22-4000H7870-1140-11
90504846
14’5″4400mm7/8″22mmTHU-H22-4400H7870-1144-11
15’9″4800mm7/8″22mmTHU-H22-4800H7870-1148-11
90504847
18′ 4 1/2″5600mm7/8″22mmTHU-H22-5600H7870-1156-11
90504848
21′6400mm7/8″22mmTHU-H22-6400H7870-1164-11
90504849
23′ 7 1/2″7200mm7/8″22mmTHU-H22-7200H7870-1172-11
90504850
26’3″8000mm7/8″22mmTHU-H22-8000H7870-1180-11
90504851
28′ 10 1/2″8800mm7/8″22mmTHU-H22-8800H7870-1188-11
Tapered rod, shank 25 x 108, Carburized
Black Diamond Drilling 22mm Shank Air leg 25-108-Carburised14′4300mm1″25mmTHU-H25-4300C7870-7143-30
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.

 

H22 11° Taper Drilling Tools
BITSFlushing
Hole, mm
Buttons,
mm
AngleDimensions,
D
Part NumberCompatibility
Front
No Size
Gauge
No Size
Front
No Size
Gauge
No Size
ImperialMetric
Button Bit
Black Diamond Drilling Top Hammer Air Leg tools THU-N33FF-R25-parabolic1×51×52×75×740°1 1/4″32mmTHU-N32-11-H227776-4432-B48
90512816
1×51×52×75×840°1 3/8″35mmTHU-N35-11-H227776-4435-B48
90512818
1×51×52×75×835°1 7/16″36mmTHU-N36-11-H227776-4436-B48
90509968
1×51×62×75×835°1 1/2″38mmTHU-N38-11-H227776-4438-B48
90509966
1×51×62×85×935°1 37/64″40mmTHU-N40-11-H227776-4440-B48
90509962
DRILL RODSDimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
Tapered rod, shank 22 x 108, Carburized
Black Diamond Drilling 22mm Shank Air leg 22-108-Carburised2′610mm7/8″22mmTHU-H22/11-610C7876-6106-11
2′ 7 1/2″800mm7/8″22mmTHU-H22/11-800C7876-6108-11
90504864
4′1220mm7/8″22mmTHU-H22/11-1220C7876-6112-11
90504865
5’3″1600mm7/8″22mmTHU-H22/11-1600C7876-6116-11
90500144
6′1830mm7/8″22mmTHU-H22/11-1830C7876-6118-11
90504868
6’7″2000mm7/8″22mmTHU-H22/11-2000C7876-6120-11
90504869
8′2440mm7/8″22mmTHU-H22/11-2440C7876-6124-11
90505441
10′3050mm7/8″22mmTHU-H22/11-3050C7876-6131-11
11′ 9 1/2″3600mm7/8″22mmTHU-H22/11-3600C7876-6136-11
90510203
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
H22 7° Taper Drilling Tools
BITSFlushing
Hole, mm
Buttons,
mm
AngleDimensions,
D
Part NumberCompatibility
Front
No Size
Gauge
No Size
Front
No Size
Gauge
No Size
ImperialMetric
Button Bit
Black Diamond Drilling Top Hammer Air Leg tools THU-N33FF-R25-parabolic2×51×52×75×740°1 1/4″32mmTHU-N32-7-H227788-5232-B48
90512799
2×41×42×75×740°1 9/64″33mmTHU-N33-7-H227788-5233-B48
90515546
2×41×42×75×840°1 3/8″35mmTHU-N35-7-H227788-5235-B48
90512922
2×41×42×75×835°1 1/2″38mmTHU-N38-7-H227788-5238-B48
90515584
DRILL RODSDimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
Tapered Rod Shank Hex 22mm 7° Tapered Carburized
Black Diamond Drilling 22mm Shank Air leg 22-108-Carburised8′2400mm7/8″22mmTHU-H22/7-2400C7888-6124-11
90515483
10′ 6″3200mm7/8″22mmTHU-H22/7-3200C7888-6132-11
90516583
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
H22 6.5° Taper Reaming Tools
REAMER BITSButtons,
mm
Dimensions,
D
Part NumberCompatibility
Front
No Size
Gauge
No Size
ImperialMetric
Reamer Bit
Black Diamond Drilling air leg drilling tools 6 degree taper reaming bit2×108×112 7/16″62mmTHU-HH-R62FF-H22/6.5
2×118×113″76mmTHU-HH-R76FF-H22/6.5
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
REAMER RODSDimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
Reamer Rod H22 6.5° Taper
Black-Diamond-Drilling-22mm-Shank-Hand-held-reamer-rod2′610mm7/8″22mmTHU-HHRR-H22/6.5-610
4′1220mm7/8″22mmTHU-HHRR-H22/6.5-1220
6′1830mm7/8″22mmTHU-HHRR-H22/6.5-1830
8′2440mm7/8″22mmTHU-HHRR-H22/6.5-2440
10′3050mm7/8″22mmTHU-HHRR-H22/6.5-3050
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
H22 (7/8″) Integral Drill Steels
Shank 22x108mm (7/8″x4 1/4″)SeriesDIMENSIONSPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
Black Diamond Drilling 22mm Shank Hand held drilling rod112’7″800mm1 11/32″34mmTHU-H22-800/34714-0834-65
90503753
5’3″1600mm1 19/64″33mmTHU-H22-1600/33714-1633-65
90503757
7’10”2400mm1 1/4″32mmTHU-H22-2400/32714-2432-65
90503761
10’6″3200mm1 7/32″31mmTHU-H22-3200/31714-3231
90503763
13’1″4000mm1 3/16″30mmTHU-H22-4000/30714-4030
90503764
15’9″4800mm1 9/64″29mmTHU-H22-4800/29714-4829
90503765
18’4″5600mm1 7/64″28mmTHU-H22-5600/28714-5628-50
90503766
21′6400mm1 1/16″27mmTHU-H22-6400/27714-6427-50
90503767
23′ 8″7200mm1 1/32″26mmTHU-H22-7200/26714-7226-50
90504197
122’7″800mm1 37/64″40mmTHU-H22-800/40714-0840-65
90503754
5’3″1600mm1 17/32″39mmTHU-H22-1600/39714-1639-65
90503758
7’10”2400mm1 1/2″38mmTHU-H22-2400/38714-2438-65
90503762
10’6″3200mm1 29/64″37mmTHU-H22-3200/37714-3237-65
90503801
13’1″4000mm1 27/64″36mmTHU-H22-4000/36714-4036-65
90503798
15’9″4800mm1 3/8″35mmTHU-H22-4800/35714-4835-65
90503866
18’4″5600mm1 11/32″34mmTHU-H22-5600/34714-5634-65
90503867
21′6400mm1 19/64″33mmTHU-H22-6400/33714-6433-65
90503868
23’8″7200mm1 1/4″32mmTHU-H22-7200/32714-7232-65
90504222
131’4″400mm1 11/32″34mmTHU-H22-400/34714-0434-65
90503769
2’7″800mm1 19/64″33mmTHU-H22-800/33714-0833-65
90504245
3’11”1200mm1 1/4″32mmTHU-H22-1200/32714-1232-65
90503755
6’7″2000mm1 3/16″30mmTHU-H22-2000/30714-2030
90503759
142′600mm1 3/8″35mmTHU-H22-600/35714-0635-65
90503752
3’11”1200mm1 11/32″34mmTHU-H22-1200/34714-1234-65
90503756
5’11”1800mm1 19/64″33mmTHU-H22-1800/33714-1833-65
90503855
7’10”2400mm1 1/4″32mmTHU-H22-2400/32714-2432-65
90503761
152′600mm1 5/8″41mmTHU-H22-600/41714-0641-65
90504195
3’11”1200mm1 37/64″40mmTHU-H22-1200/40714-1240-65
90503852
5’11”1800mm1 17/32″39mmTHU-H22-1800/39714-1839-65
90503851
7’10”2400mm1 1/2″38mmTHU-H22-2400/38714-2438-65
90503762
166’7″2000mm1 19/64″33mmTHU-H22-2000/33714-2033-65
90503760
26’3″8000mm1 1/32″26mmTHU-H22-8000/26714-8026-50
90504198
28’11”8800mm1″25mmTHU-H22-8800/25714-8825-5005
31’6″9600mm1″25mmTHU-H22-9600/25714-9625-5005
90504798
175’3″1600mm1 7/64″28mmTHU-H22-1600/28714-1628-50
90504420
7’10”2400mm1 1/16″27mmTHU-H22-2400/27714-2427-50
90503641
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.

R23, R25 and R28 Drilling Tools

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
BITSFlushing
Hole, mm
Buttons,
mm
AngleDimensions,
D
Part NumberCompatibility
Front
No Size
Gauge
No Size
Front
No Size
Gauge
No Size
ImperialMetric
Button Bit
Black Diamond Drilling Top Hammer Air Leg tools THU-N33FF-R25-parabolic1×41×62×75×735°1 5/16″33mmTHU-N33-R237737-4433-R48
1×61×62×75×840°1 3/8″35mmTHU-N35-R237737-5235-R48
1×61×62×75×935°1 1/2″38mmTHU-N38-R237737-5238A-R48
1×61×62×85×935°1 5/8″41mmTHU-N41-R237737-5241-R48
Button Bit
Black Diamond Drilling Top Hammer Hand Held Tools N45FF6-BD33A-300W3×4.53×86×940°1 3/4″45mmTHU-N45-R237737-5345-R48
DRILL RODSDimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
Shank adapter, Hex 22 – R23
Black Diamond Drilling Air Leg Shank-adapter-Hex22-R2310 3/4″255mm7/8″22mmTHU-H22-R23-255/227807-6103-11
2’7″800mm7/8″22mmTHU-H22-R23-800/227807-6108-11
5’3″1600mm7/8″22mmTHU-H22-R23-1600/227807-6116-11
8′2440mm7/8″22mmTHU-H22-R23-2440/227807-6124-11
10′3200mm7/8″22mmTHU-H22-R23-3200/227807-6132-11
11′ 9 5/8″3600mm7/8″22mmTHU-H22-R23-3600/227807-6136-11
MF Rod, R23 – H22 – R23
Black Diamond Drilling Air Leg MF-rod-R23-H22-R236′ 10 1/2′2095mm7/8″22mmTHU-R23-H22-R23-20957857-4821-20
10′3050mm7/8″22mmTHU-R23-H22-R23-30507857-4831-20
Shank adapter, Hex 25 – R23
Black Diamond Drilling Air Leg Drilling Tools Shank-adapter-Hex25-R2310 3/64255mm1″25mmTHU-H25-R23-255/257807-7103-30
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
BITSFlushing
Hole, mm
Buttons,
mm
AngleDimensions,
D
Part NumberCompatibility
Front
No Size
Gauge
No Size
Front
No Size
Gauge
No Size
ImperialMetric
Cross Bit
Black Diamond Drilling Top Hammer Air leg tools THU-N45X-R321×52×51 3/8″35mmTHU-X35-R257732-1435-42
90514221
Button Bit
Black Diamond Drilling Top Hammer Air Leg tools THU-N33FF-R25-parabolic1×51×62×75×745°1 5/16″33mmTHU-N33-R257732-4433C-S48
90510448
1×41×62×75×930°1 3/8″35mmTHU-N35-R257732-4435-S48
90505181
1×51×62×75×930°1 7/16″37mmTHU-N37-R257732-4437C-S48
90513899
1×61×62×75×840°1 3/8″35mmTHU-N35-R25/B7732-5235-R48
90509723
1×61×62×75×935°1 1/2″38mmTHU-N38-R257732-5238-R48
90505179
1×61×62×85×935°1 5/8″41mmTHU-N41-R257732-5241-S48
90505175
Button Bit
Black Diamond Drilling Underground Drilling Face and Development Drilling Bit THU-N64DC-T383×4.53×86×940°1 3/4″45mmTHU-N45-R257732-5345F-R48
90510208
3×4.51×4.53×86×1030°1 7/8″48mmTHU-N48-R257732-5348A-S48
90513912
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
DRILL RODSDimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
MF-Rod, R25 – Hex 25 – R25#colspan
Black Diamond Drilling Air Leg Drilling Tools MF-rod-R25-H25-R254′1220mm1″25mmTHU-R25-1220/257852-3112-20
10′3025mm1″25mmTHU-R25-3025/257852-313025-20
12′3660mm1″25mmTHU-R25-3660/257852-3137-20
Shank Adapter, Hex 25 – R25
Black Diamond Drilling Air Leg Drilling Tools Shank-Adapter-Hex25-R257’10”2400mm1″25mmTHU-R25-2400/257802-7124-30
90500568
12’3″3735mm1″25mmTHU-R25-3735/257802-71373-30
Shank Adapter, Hex 22 – R25
Black Diamond Drilling Air Leg Drilling Tools Shank-Adapter-Hex22-R2510 3/64″255mm7/8″22mmTHU-R25-255/227802-6103-11
90000237
2’7″800mm7/8″22mmTHU-R25-800/227802-6108-11
90510004
3’3″1000mm7/8″22mmTHU-R25-1000/227802-6110-11
90531258
Extension Rod, R25 – Hex 25 – R25
Black Diamond Drilling Air Leg Drilling Tools Extension-Rod-R25-Hex25-R253′915mm1″25mmTHU-R25-915/25-E7852-2309-20
4′1220mm1″25mmTHU-R25-1220/25-E7852-2312-20
5′1525mm1″25mmTHU-R25-1525/25-E7852-2315-20
6′1830mm1″25mmTHU-R25-1830/25-E7852-2318-20
8′2435mm1″25mmTHU-R25-2435/25-E7852-2324-20
10′3050mm1″25mmTHU-R25-3050/25-E7852-2331-20
Coupling Sleeve, R25
Black Diamond Drilling Coupling Sleeve Guide6 1/4″160mm1 3/8″35mmTHU-R25-160/357992-3335
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
BITSFlushing
Hole, mm
Buttons,
mm
AngleDimensions,
D
Part NumberCompatibility
Front
No Size
Gauge
No Size
Front
No Size
Gauge
No Size
ImperialMetric
Button Bit
Black Diamond Drilling Underground Drilling Face and Development Drilling Bit THU-N64DC-T381×51×62×75×930°1/16″37mmTHU-N37-R287739-5237-S48
90514167
1×61×62×75×935°1 1/2″38mmTHU-N38-R287739-5238-R48
90514282
1×61×62×75×935°1 1/2″38mmTHU-N38-R28/B7739-5238-S48
90514705
1×61×62×75×935°1 1/2″38mmTHU-N38-R28/C7739-5238-S70
1×61×62×75×935°1 1/2″38mmTHU-N38-R28/D7739-5238-S80
1×61×62×85×935°1 5/8″41mmTHU-N41-R287739-5241-S48
90515379
1×61×62×85×1035°1 11/16″43mmTHU-N43-R287739-5243-S48
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
REAMING TOOLSButtons,
mm
AngleDimensionsPart NumberCompatibility
Front
No Size
Gauge
No Size
ImperialMetric
R28 Reaming Bit, 6° Taper
Black Diamond Drilling air leg drilling tools 6 degree taper reaming bit4×88×925°2 1/2″64mmTHU-R64-R287722-4864-S48
90510459
4×108×1030°3″76mmTHU-R76-R287722-4876-S48
90510460
6×108×1235°3 1/2″89mmTHU-R89-R287722-4889-S48
90510461
DimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
Pilot Adapter, 6° Taper
Black Diamond Drilling air leg drilling tools 6 degree taper pilot adaptor11 1/4″285mm1 1/32″26mmTHU-R285/26-R287822-1526
90516259
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.
DRILL RODSDimensionsPart NumberCompatibility
LengthDiameter
ImperialMetricImperialMetric
MF Rod , R28 – Round 32 – R28
Black Diamond Drilling Air Leg Drilling Tools MF-rod-R28-R32-R2810′3050mm1 1/4″32mmTHU-R28-32-R28-30507859-5131-20
12′3660mm1 1/4″32mmTHU-R28-32-R28-36607859-5137-20
Drifter Rod, R32 – Hex 28 – R28
Black Diamond Drilling Air Leg Drilling Tools Drifter-Rod-R32-Hex28-R288′ 1 1/2″2475mm1 1/8″28mmTHU-R32-H28-R28-24757853-7624-20
90514370
9′ 1 5/8″2785mm1 1/8″28mmTHU-R32-H28-R28-27857853-7627-20
90514164
10′ 1 5/8″3090mm1 1/8″28mmTHU-R32-H28-R28-30907853-7631-20
90514168
10′ 11 1/2″3340mm1 1/8″28mmTHU-R32-H28-R28-33407853-7633-20
90515496
12′ 1 5/8″3700mm1 1/8″28mmTHU-R32-H28-R28-37007853-7637-20
90514966
14′ 1 1/2″4305mm1 1/8″28mmTHU-R32-H28-R28-43057853-7643-20
Coupling Sleeve, R32
Black Diamond Drilling Coupling Sleeve Guide5 29/32″150mm1 47/64″44mmTHU-R28-150/447993-3644
90515731
While every effort has been made to ensure compatibility it is the clients responsibility to ensure product compatibility before use.