DTH Hammer & Bits

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& Bits Full Catalogue
Black Diamond Drilling DTH Down the Hole Hammers and Bits
DTH Hammers
DTH Bits
DTH Hole Openers
Drill Pipes
Adapters
Breakout Bench

DTH Hammer

Selecting the Right Hammer

The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½”–10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.

In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.

As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127–130 mm).

Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Specifications

HammerBR2ADHD3.5HK4DHD45HQL4AHQL50HK5QHD55HQL60HQL6AHQL80HD85HK9QHSD10HSD12HK12YN125-R
Recommended bit size, mm7692-105112-127140-152165-178203-229216-229245-305305-445305-350305-445
Bit ShankBR2ADHD3.5DHD340AQL40QL50DHD350QL60QL80DHD380QL80SD10SD12HY12NUMA125R
External diameter, mm6382100100101126.5127.5126.5148146185185203225275275275
Length excl. thread, mm
(Less bit)		8378559151032.5105711479351167112111821471148713451413168015901812
Hammer weight, kg
(Less bit)		14.12537.540.64171.667.677.2105105203206228303526510.2546
Package case size(L)910
(W)90
(H)120		(L)1200
(W)110
(H)140		(L)1010
(W)130
(H)160		(L)1080
(W)125
(H)134		(L)1150
(W)130
(H)160		(L)1290
(W)150
(H)175		(L)1100
(W)155
(H)180		(L)1290
(W)150
(H)175		(L)1270
(W)170
(H)200		(L)1260
(W)180
(H)200		(L)1440
(W)230
(H)270		(L)1560
(W)230
(H)270		(L)1500
(W)240
(H)280		(L)1620
(W)275
(H)290		(L)1880
(W)320
(H)320		(L)1665
(W)320
(H)360		(L)1880
(W)310
(H)310
Top Sub threadRD502-3/8" API REG3-1/2" API REG4-1/2" API REG6-5/8" API REG6-5/8" API REG
7-5/8" API REG		6-5/8"
API REG
Working Pressure, PSI80-170150-250200-300250-350300-350300-380300-380150-350200-350
Air consumption, CFM250-350300-400500-700500-800600-900950-1200950-12001000-18001200-1500800-1800
Piston diameter, mm42.765828080104102100122121150150165185225
Piston weight, kg1.75.19.299171716242438425068110111111
Wrench flat, mmL47
W50		L57
W35		L74.5
W45		L64
W40		NO
wrench
flat		L89
W60		L88
W50		L89
W60		L101
W65		L101
W60		L128
W70		L140
W70		L128
W70		L140
W70		L140
W70		L140
W70		L140
L70
Feed force, kN2~63~85~156~257~2010~2515~3020~35
Rotation speed, r/min30-703-9025-8020-7025-6020-6015-35
Drilling conditions and project specifications may require larger air package to be used

Product Codes

Product codes are a valuable tool to describe and identify the product. In the code structure we have tried to describe the product features with an alphanumeric system and not always 100% logical, but with the attached key you will be able to find the product you are looking for or alternative products.

Black Diamond Drilling DTH Down the Hole Hammer Product Codes Guide

Air Consumption / Operating Pressure

Black Diamond Drilling DTH Down the Hole Hammer Air Consumption and Operating Pressure Chart

BR2A DTH Down the Hole Hammer - Compatibility: BR2, COP20

Download PDF  |  Compatibility: BR2, COP20

Black Diamond Drilling BR2A DTH Down the Hole Hammer schematic parts list and technical data

HD35 DTH Down the Hole Hammer - Compatibility: DHD3.5, COP35, TD35, QLX35, TERRANOX 3

Download PDF  |  Compatibility: DHD3.5, COP35, TD35, QLX35, TERRANOX 3

Black Diamond Drilling HD35 DTH Down the Hole Hammer schematic parts list and technical data

HK4-D DTH Down the Hole Hammer - Compatibility: DHD340A, COP44, QL340, TERRANOX 4

Download PDF  |  Compatibility: DHD340A, COP44, QL340, TERRANOX 4

Black Diamond Drilling HK4-D DTH Down the Hole Hammer schematic paerts list and technical data

HD45 DTH Down the Hole Hammer - Compatibility: DHD340A, COP44, QL340, TERRANOX 4

Download PDF  |  Compatibility: DHD340A, COP44, QL340, TERRANOX 4

Black Diamond Drilling HD45 DTH Down teh Hole Hammer schematic parts list and technical data

HQL4A DTH Down the Hole Hammer - Compatibility: QL40

Download PDF  |  Compatibility: QL40

Black Diamond Drilling HQL4A DTH Down the Hole Hammer schematic parts list and technical data

HQL50 DTH Down the Hole Hammer - Compatibility: QL50, TD50, COP54G

Download PDF  |  Compatibility: QL50, TD50, COP54G

Black Diamond Drilling HQL50 DTH Down the Hole Hammer schematic parts list and technical data

HK5-Q DTH Down the Hole Hammer - Compatibility: QL50, TD50, COP54G

Download PDF  |  Compatibility: QL50, TD50, COP54G

Black DIamond Drilling HK5-Q DTH Down the Hole Hammer schematic parts list and technical data

HD55 DTH Down the Hole Hammer - Compatibility: COP54, TERRANOX 5

Download PDF  |  Compatibility: COP54, TERRANOX 5

Black Diamond Drilling HD55 DTH Down the Hole Hammer schematic parts list and technical data

HQL60 DTH Down the Hole Hammer - Compatibility: QL60, COP64G

Download PDF  |  Compatibility: QL60, COP64G

Black Diamond Drilling HQL60 DTH Hammer schematic parts list and technical data

HQL60A DTH Down the Hole Hammer - Compatibility: QL60, COP64G

Download PDF  |  Compatibility: QL60, COP64G

Black Diamond Drilling HQL60A DTH Down the Hole Hammer schematic parts list and technical data

HQL80 DTH Down the Hole Hammer - Compatibility: QL80, TD80, TD85

Download PDF  |  Compatibility: QL80, TD80, TD85

Black Diamond Drilling HQL80 DTH Down the Hole Hammer schematic parts list and technical data

 

HD85 DTH Down the Hole Hammer - Compatibility: DHD380, TERRANOX 8

Download PDF  |  Compatibility: DHD380, TERRANOX 8

Black Diamond Drilling HD85 DTH Hammer schematic parts list and technical data

HK9-Q DTH Down the Hole Hammer
HSD10 DTH Down the Hole Hammer - Compatibility : NUMA100, SD10, DHD1100, MP100, HYPER  101

Download PDF | Compatibility : NUMA100, SD10, DHD1100, MP100, HYPER  101

Black Diamond Drilling HSD10 DTH Down the Hole Hammer schematic and parts list

Black Diamond Drilling HSD10 DTH Down the Hole Hammer technical data

HSD12 DTH Down the Hole Hammer - Compatibility : NUMA125, SD12, DHD1120, MP120, HYPER 121, QL120

Download PDF | Compatibility : NUMA125, SD12, DHD1120, MP120, HYPER 121, QL120

Black Diamond Drilling HSD12 DTH Down the Hole Hammer schematic and parts list

Black Diamond Drilling HSD12 DTH Down the Hole Hammer technical data

HK12-Y DTH Down the Hole Hammer - Compatibility : NUMA125, SD12, DHD1120, MP120, HYPER 121, QL120

Download PDF - Compatibility : NUMA125, SD12, DHD1120, MP120, HYPER 121, QL120

Black Diamond Drilling HK12-Y DTH Down the Hole Hammer schematic parts list and technical data 

N125-R DTH Down the Hole Hammer - Compatibility : NUMA125, SD12, DHD112, MP120, HYPER 121, QL120

Download PDF | Compatibility : NUMA125, SD12, DHD112, MP120, HYPER 121, QL120

Black Diamond Drilling N125-R DTH Down the Hole Hammer schematic and parts list

Black Diamond Drilling N125-R DTH Down the Hole Hammer technical data

DTH Bits

Selecting the Right Bit

Black Diamond has a comprehensive range of DTH drill bits to match all conceivable applications. Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons manufactured in-house. These are deigned for specific applications for all rock types, hardness's and condition. Bit life and rate of penetration are the most important criteria in selecting the right bit for a particular application.

Bit Face Shape Selection

Black Diamond Drilling DTH Down the Hole Bit Face Shape selection guide

Black Diamond Drilling DTH Down the Hole Bit Face Shape and Hardness Graph

Carbide Button Shape Selection

Black Diamond Drilling DTH Down the Hole Carbide Button Shape selection guide

Product Codes

Product codes are a valuable tool to describe and identify the product. In the code structure we have tried to describe the product features with an alphanumeric system and not always 100% logical, but with the attached key you will be able to find the product you are looking for or alternative products.

Black Diamond Drilling DTH Down the Hole Bits Product Codes Guide

Bit Shanks
3" Hammer Compatible Bits
4" Hammer Compatible Bits
5" Hammer Compatible Bits
6" Hammer Compatible Bits
8" Hammer Compatible Bits

DTH Hole Openers

DTH Hole Openers

Download PDF

Black Diamond Drilling DTH Down the Hole Hole Openers

DTH hole openers are used to enlarge the size of a pilot hole most commonly used in industrial applications. Benefits of drilling a smaller pilot hole are:

  • The ability to use less powerful equipment than that required to drill the large diameter hole
  • Straighter holes result from the small pilot hole
  • Better cleaning of cut material

Black Diamond Drilling Services has a large variety of Hole Openers on the shelf, and if we don't have what you are looking for we can have one custom-made to your specification.

Black Diamond Drilling DTH Down the Hole Hole Opener reference table

Black Diamond Drilling DTH Down the Hole Hole Opener ordering guide

Drill Pipes

Drill Pipes Detail

Black Diamond Drilling DTH Down the Hole Drill Pipes Detail and Specifications

Adapters

Adapters Detail

Black Diamond Drilling DTH Down the Hole Adapters detail and specifications

Breakout Bench

Breakout Bench

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The threaded connections of the driver chuck and top sub may become very tightly tensioned during drilling. It is convenient to break the hammer threads on the rig, but if the threads cannot be loosened or tend to get stuck, a breakout bench is the solution.

This handy but powerful breakout bench can easily be placed in a workshop or container and it breaks DTH hammers between 3" and 10". Select the right breakout bench depending on voltage and power source.

Black Diamond Drilling Breakout Bench Specifications