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Check out our
Diamond Drill Bit
Summary Page!

Pro-Sintered Diamond Drill Bits /
Professional Diamond Core Drills

Pro-Sintered Diamond Drill Bits

Specifically Designed for Heavy-Duty Drilling In    
  Porcelain Tile Brick Concrete Marble
  Ceramic Tile Block Sandstone Granite
  Masonry Cement Limestone Quartz
 

Designed for materials to about 1-3/4" thick.
Not recommended for glass.
Diamond Drill Bit Sizes from 1/8" to 5"

DiamondSure Pro-Sintered Diamond Drill Bit

DiamondSure brand Pro-Sintered Diamond Drill Bits are also know as Sintered Diamond Core Drill Bits or Sintered Diamond Hole Saws.  These are professional quality, heavy-duty diamond drill bits designed for use on ceramic tile, porcelain tile, limestone, sandstone, marble, granite, quartz and other stone, plus bricks, masonry, concrete block, and concrete.  Water must be used for lubrication.

Sintered diamond drill bits are not very effective for glass type materials or softer stone materials such as slate and are not recommended for use on glass or slate.  Bonded diamond bits are much more effective for those types of materials.  See DiamondSure Bonded Diamond Drill Bits


Sintered Diamond Bit Tip View
Tip view shows the 3mm thick
sintered diamond segments on
tip of bit of the 2" size bit.


Sintered diamond drill bits have the diamonds embedded into the metal of the drill bit tip rather than merely "bonded" to the tip as with bonded diamond drill bits.  As the tip wears down on a sintered diamond drill bit, new diamonds come to the surface.  The tip sidewall of DiamondSure Pro-Sintered Diamond Drill Bits is 2mm thick on the smaller size bits (1" and below) and increases to 2.5mm to 3mm thick on larger size bits.

Sintered diamond drill bits are heavy-duty bits designed for long life.  Generally, sintered bits will have a long life of 20 to 30 or more times the life of a bonded diamond drill bit, if used properly.  The heavy-duty design provides long life when drilling in very hard materials such as porcelain tile, granite and hard stones.  However, there are some disadvantages.  Sintered bits are much more expensive than bonded diamond bits and the thick heavy-duty tip causes them to drill more slowly than thin-wall bonded diamond drill bits.

Diamond drill bits are easy to use, but there are many drilling techniques that are different from standard steel-bit drilling.  Diamond drill bit usage can also vary depending upon the diamond drill bit type and the specific manufacturer.  To assist our customers, we have compiled a detailed Drilling Tips & Techniques section.

 

 


Small sintered diamond drill bits

Large diamond hole saw 



DiamondSure
Pro-Sintered Diamond Drill Bits
Recommended Drill Speeds

DiamondSure - Sintered Bits

Recommended Drill Speed (rpm)

Material         Bit Size --> 

1/2"

1"

2"

3"

4"
 Glass & Fiberglass

Not recommended
 Slate or soft stone

Not recommended
 Limestone & Marble Stone

1600

800

400

300

200
 Concrete & Masonry

1600

800

400

300

200
 Ceramic Wall Tile

1600

800

400

300

200
 Porcelain Wall Tile

1200

600

300

225

150
 Porcelain Floor Tile

1200

600

300

225

150
 Granite Stone

1200

600

300

225

150

Designed for long-term use in materials up to 1-3/4" thick
(Not for use with Hammer Drills)

Because diamond drill bits are used to drill in extremely hard materials, it is very important to use proper drill pressure to keep from overheating the drill bit.  Excessive pressure is merely converted to heat energy and can burn up a bit or cause heat fractures in the material being drilled.
.

DiamondSure
Pro-Sintered Diamond Drill Bits
Recommended Drill Head Pressure

Material

Drill Head Pressure - Lbs*

Material         Bit Size --> 

to 1/2"

1/2" - 1"

1" - 2"

2" - 3"

3" - 4"
 Glass & Fiberglass

Not Recommended
 Slate or soft stone

Not Recommended
 Limestone & Marble Stone 12 to 18 18 to 26 24 to 36 32 to 50 45 to 60
 Porcelain Wall Tile 15 to 24 20 to 30 30 to 45 40 to 60 50 to 75
 Porcelain Floor Tile 20 to 30 30 to 45 40 to 60 50 to 75 60 to 95
 Granite & Quartz Stone 20 to 30 30 to 45 40 to 60 50 to 75 60 to 95

* WARNING:  Drill press arm gears leverage hand pressure by a factor of about 6 to 8.  So 2 lbs of hand pressure on the drill press arm can apply up to 16 lbs of pressure to the drill head.

 

 

Drill Water Swivel
Water Swivel

Pro-Sintered Drill Bits - Water Lubrication

Water must be used for lubrication.  There are many ways to lubricate the drilling, as explained in our Drilling Tips & Techniques page.  One of the most effective methods and the one used by most professionals, is to use a Water Swivel, also know as a Water Feed or a Water Feed System. 

All DiamondSure Pro-Sintered Drill Bits have a shaft size of 10mm.  Our water swivel section includes a swivel with a 10mm Collet which is designed for use with drill bits that have 10mm shafts, such as the DiamondSure Pro-Sintered bits.  See: Water Swivel Devices

IMPORTANT
Diamond drill bits require the use of proper lubrication, correct
drill speed and proper pressure.  Drilling methods and techniques
vary significantly depending upon the material being drilled.
Please See: Drilling Tips & Techniques <Click Here>



Diamond drill bit with center pilot bit
Sintered Diamond Drill Bit
with optional center pilot bit.

Starting a Hole Saw / Core Drill and
Using A Center Pilot Starter Bit

Starting a core drill / hole saw style drill bit can sometimes be difficult.  Our Drilling Tips & Techniques section discusses the various starting methods.  The Pro-Sintered Drill Bits over 1" in size are also designed to accept a Center Pilot Bit.  The optional Pilot Bit is available below.

If a Center Pilot Bit is used to start the drill bit, it is important to remove the pilot bit as soon as possible after the diamond drill bit has started drilling.  The carbide pilot bits cause the diamond bit to drill very slowly and the pilot bit can wear out quickly when drilling in very hard materials.




Pro-Sintered Diamond Drill Bits

Measurements Shown are Outside Diameter
(Click on individual drill bit pictures for detailed specifications)
.

Drill Bit Spacer

- - - Item - - -

  Price
   Qty     Order?
1/8" Sintered Diamond Drill Bits
Click for Large Picture & Specs

1/8" Pro-Sintered Diamond Drill Bit                

DX-103  1/8" Pro-Sintered Diamond Drill Bit
                                  (Dia 3.0mm/0.12"  Depth to 2-1/4")

49.75
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3/16" Sintered Diamond Drill Bit
Click for Large Picture & Specs

3/16" Pro-Sintered Diamond Drill Bit                

DX-105  3/16" Pro-Sintered Diamond Drill Bit
                                  (Dia 5.0mm/0.19"  Depth to 2-1/4")
47.75
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6mm Sintered Tile Drill Bits
Click for Large Picture & Specs

6mm Pro-Sintered Diamond Drill Bit                

DX-101  6mm Pro-Sintered Diamond Drill Bit
                                  (Dia 6.0mm/0.23"  Depth to 2-1/4")
39.75
.
   

 


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1/4" Sintered Diamond Drill Bit
Click for Large Picture & Specs

1/4" Pro-Sintered Diamond Drill Bit                

DX-107  1/4" Pro-Sintered Diamond Drill Bit
                                  (Dia 6.5mm/0.25"  Depth to 2-1/4")
42.75
.
   

 


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5/16" Sintered Diamond Drill Bits
Click for Large Picture & Specs

5/16" Pro-Sintered Diamond Drill Bit                

DX-108  5/16" Pro-Sintered Diamond Drill Bit
                                  (Dia 8.0mm/0.31"  Depth to 2-1/4")
45.75
.
   

 


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3/8" Sintered Diamond Drill Bit
Click for Large Picture & Specs

3/8" Pro-Sintered Diamond Drill Bit                

DX-115  3/8" Pro-Sintered Diamond Drill Bit
                                  (Dia 10mm/0.39"  Depth to 2-1/4")
48.75
.
   

 


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1/2" Sintered Tile Drill Bits
Click for Large Picture & Specs

1/2" Pro-Sintered Diamond Drill Bit                

DX-116  1/2" Pro-Sintered Diamond Drill Bit
                                  (Dia 13mm/0.51"  Depth to 2-1/8")
51.75
.
   

 


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5/8" Sintered Diamond Drill Bit
Click for Large Picture & Specs

5/8" Pro-Sintered Diamond Drill Bit                

DX-117  5/8" Pro-Sintered Diamond Drill Bit
                                  (Dia 16mm/0.63"  Depth to 2")
53.75
.
   

 


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3/4" Sintered Tile Drill Bit
Click for Large Picture & Specs

3/4" Pro-Sintered Diamond Drill Bit                

DX-118  3/4" Pro-Sintered Diamond Drill Bit
                                  (Dia 19mm/0.75"  Depth to 2")
55.75
.
   

 


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7/8" Sintered Diamond Drill Bit
Click for Large Picture & Specs

7/8" Pro-Sintered Diamond Drill Bit                

DX-119  7/8" Pro-Sintered Diamond Drill Bit
                                  (Dia 22mm/0.87"  Depth to 1-7/8")
63.75
.
   

 


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1" Sintered Diamond Drill Bits
Click for Large Picture & Specs

1" Pro-Sintered Diamond Drill Bit                

DX-120  1" Pro-Sintered Diamond Drill Bit
                                  (Dia 26mm/1.02"  Depth to 1-7/8")
59.75
.
   

 


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1-1/8" Tile Drill Bit
Click for Large Picture & Specs

1-1/8" Pro-Sintered Diamond Drill Bit                

DX-121  1-1/8" Pro-Sintered Diamond Drill Bit
                                  (Dia 29mm/1.14"  Depth to 1-7/8")
68.75
.
   

 


 

        1-1/4" Pro-Sintered Diamond Drill Bit (available in two lengths)

1-1/4" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-124  1-1/4" Pro-Sintered Diamond Drill Bit
                                 (Dia 32mm/1.26"  Depth to 1-3/4")
64.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-224  1-1/4" Long Pro-Sintered Diamondl Bit
                                 (Dia 32mm/1.26"  Depth to 3-1/4")
77.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        1-3/8" Pro-Sintered Diamond Drill Bit (available in two lengths)

1-3/8" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-125  1-3/8" Pro-Sintered Diamond Drill Bit
                                 (Dia 35mm/1.38"  Depth to 1-3/4")
69.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-225  1-3/8" Long Pro-Sintered Diamond Bit
                                 (Dia 35mm/1.38"  Depth to 3-1/4")
83.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        1-1/2" Pro-Sintered Diamond Drill Bit (available in two lengths)


Click for Large Picture & Specs

DX-126  1-1/2" Pro-Sintered Diamond Drill Bit
                                 (Dia 38mm /1.50"  Depth to 1-3/4")
74.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-226  1-1/2" Long Pro-Sintered Diamond Bit
                                  (Dia 38mm/1.50"  Depth to 3-1/4")
89.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        1-3/4" Pro-Sintered Diamond Drill Bit (available in two lengths)

1-3/4" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-128  1-3/4" Pro-Sintered Diamond Drill Bit
                                 (Dia 45mm /1.77"  Depth to 1-3/4")
79.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-228  1-3/4" Long Pro-Sintered Diamond Bit
                                 (Dia 45mm /1.77"  Depth to 3-1/4")
95.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        2" Pro-Sintered Diamond Drill Bit (available in two lengths)

2' Diamond Tile Drill
Click for Large Picture & Specs

DX-130  2" Pro-Sintered Diamond Drill Bit
                                 (Dia 51mm /2.01"  Depth to 1-3/4")
84.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-230  2" Long Pro-Sintered Diamond Bit
                                 (Dia 51mm /2.01"  Depth to 3-1/4")
99.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        2-1/4" Pro-Sintered Diamond Drill Bit (available in two lengths)

2-1/4" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-134  2-1/4" Pro-Sintered Diamond Drill Bit
                                 (Dia 57mm /2.25"  Depth to 1-3/4")
94.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-234  2-1/4" Long Pro-Sintered Diamond Bit
                                 (Dia 57mm /2.25"  Depth to 3-1/4")
109.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        2-1/2" Pro-Sintered Diamond Drill Bit (available in two lengths)

2-1/2" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-136  2-1/2" Pro-Sintered Diamond Drill Bit
                                 (Dia 64mm /2.52"  Depth to 1-3/4")
106.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-236  2-1/2" Long Pro-Sintered Diamond Bit
                                 (Dia 64mm /2.52"  Depth to 3-1/4")
123.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        2-3/4" Pro-Sintered Diamond Drill Bit (available in two lengths)

2-3/4" Diamond Tile Drill
Click for Large Picture & Specs

DX-138  2-3/4" Pro-Sintered Diamond Drill Bit
                                 (Dia 70mm /2.76"  Depth to 1-3/4")
118.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-238  2-3/4" Long Pro-Sintered Diamond Bit
                                 (Dia 70mm /2.76"  Depth to 3-1/4")
134.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        3" Pro-Sintered Diamond Drill Bit (available in two lengths)

3" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-140  3" Pro-Sintered Diamond Drill Bit
                                 (Dia 76mm /3.00"  Depth to 1-3/4")
129.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-240  3" Long Pro-Sintered Diamond Drill Bit
                                 (Dia 76mm /3.00"  Depth to 3-1/4")
146.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        3-1/2" Pro-Sintered Diamond Drill Bit (available in two lengths)

3-1/2" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-146  3-1/2" Pro-Sintered Diamond Drill Bit
                                 (Dia 89mm /3.50"  Depth to 1-3/4")
146.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-246  3-1/2" Long Pro-Sintered Diamond Bit
                                 (Dia 89mm /3.50"  Depth to 3-1/4")
164.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        4" Pro-Sintered Diamond Drill Bit (available in two lengths)

4" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-150  4" Pro-Sintered Diamond Drill Bit
                                 (Dia 102mm /4.00"  Depth to 1-3/4")
162.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-250  4" Long Pro-Sintered Diamond Bit
                                 (Dia 102mm /4.00"  Depth to 3-1/4")
179.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        4-1/2" Pro-Sintered Diamond Drill Bit (available in two lengths)

4-1/2" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-156  4-1/2" Pro-Sintered Diamond Drill Bit
                                 (Dia 115mm /4.52"  Depth to 1-3/4")
178.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-256  4-1/2" Long Pro-Sintered Diamond Bit
                                 (Dia 115mm /4.52"  Depth to 3-1/4")
197.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

        5" Pro-Sintered Diamond Drill Bit (available in two lengths)

5" Sintered Diamond Drill Bit
Click for Large Picture & Specs

DX-160  5" Pro-Sintered Diamond Drill Bit
                                 (Dia 127mm /5.00"  Depth to 1-5/8")
194.75
.
   
DX-199  Optional Center Pilot Starter Bit

2.75
   


DX-260  5" Long Pro-Sintered Diamond Bit
                                 (Dia 127mm /5.00"  Depth to 3-1/4")
209.70
.
   
DX-299  Optional Center Pilot Starter Bit - Long

3.50
   

 


 

 

 

 

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Half-Circle Diamond File
Half-Circle shaft profile
shown in lower left of picture.

All Purpose Diamond File

General Purpose File With 'Half-Circle' Shaft Profile

Diamond coated file is 7" long with "half-circle" shaft.  A perfect general purpose file for use on flat, rounded or curved edges.  Use on glass, stained glass, ceramic, marble, stone, fiberglass or plastic.  Blade of file is 3/8" wide, tapering to a point.  Perfect for filing off sharp edges, reshaping cuts or reaming drilled holes.  Handle is vinyl coated for safety and comfort.

DF-151  7" Diamond 'Half-Circle' File ........... ea 12.95 / 3+ 11.63 / 8+ 9.29

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