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Diamond Drill Bit

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Cahard introduces the patented technology specialized in the drilling for reinforced concrete of various labels. Cahard core drill bits are used for the drilling work in houses, buildings, roads, railways, bridges, etc. The speed of drilling for Cahard Diamond drill bits is much faster than any other diamond core drill bits brands. The service life can reach over 20 meters which is very high compared to normal standards.


Project case list of Cahard's special concrete blade
Take the drill of Φ102mm(4″)cutting the reinforced concrete wall of 24cm for example
Object being drilledDesign strength of concrete: C30Cement Mark:Pc42.5 Fine aggregate: 10-30mm detritus and cobblestone Slump: 10-30 Apparent density: 2400kg/m³ Sand Ratio: 32% Water cement ratio: 0.38 Ration: water 0.38 cement: 1.00 fine aggregate: 1.18 coarse aggregate: 2.5 Setting time: 720hours
speed of drilling3mins 30 seconds(24cm concrete wall, cut off two steel bars of 20mm)
length of drilling21.6m(concrete wall of 24cm, 90holes)
size of rebar(deformed steel bar of 20mm)
Amount of rebar2(rebar at the top and bottom layer)
time of bread of the single rebar45seconds
Specification of the Drill bit for Concrete
OD of DrillValid Length(mm)Specification of Drill Tooth(mm)Quantity of Drill Tooth
Φ25mm1″350(400)22×9×(3.5)43
Φ32mm1-1/4″350(400)22×9×(3.5)43
Φ36mm1-1/2″350(400)22×9×(3.5)43
Φ38mm1-1/2″350(400)22×9×(3.5)44
Φ40mm1-2/3″350(400)22×9×(3.5)44
Φ44mm1-3/4″350(400)22×9×(3.5)44
Φ46mm1-4/5″350(400)22×9×(3.5)44
Φ51mm2″350(400)22×9×(3.5)45
Φ56mm2-1/4″350(400)22×9×(3.5)45
Φ58mm2″350(400)22×9×(3.5)45
Φ63mm2-1/2″350(400)22×9×(3.5)46
Φ76mm3″350(400)22×9×(3.5)47
Φ83mm3-1/4″350(400)22×9×(3.5)48
Φ89mm3-1/2″350(400)22×9×(3.5)48
Φ102mm4″350(400)22×9×(3.5)49
Φ108mm4-1/4″350(400)22×9×(3.5)410
Φ114mm4-1/2″350(400)22×9×(3.5)410
Φ120mm4-3/4″350(400)22×9×(3.5)411
Φ127mm5″350(400)22×9×(3.5)411
Φ132mm5-1/4″350(400)22×9×(3.7)4.212
Φ140mm5-1/2″350(400)22×9×(3.7)4.212
Φ152mm6″350(400)22×9×(3.7)4.212
Φ159mm6-1/4″350(400)2×9×(4)4.514
Φ167mm6-1/2″350(400)22×9×(4)4.514
Φ180mm7″350(400)22×9×(4)4.515
Φ202mm8″350(400)22×9×(4)4.516
Φ229mm9″350(400)22×9×(4)4.518
Φ254mm10″350(400)22×9×(4)4.521
Φ300mm12″350(400)22×9×525
Φ355mm14″350(400)22×9×5.529
Φ400mm15-1/2″350(400)22×9×634

1. If any similar products of other diamond tools brands have a faster speed of strand cutting than Cahard Diamond Tools or any other brand's diamond tools have a service life longer than Cahard, the product can be returned to us.

2. If the strand cutting of Cahard Diamond Tools has any beading, deflected grind, or broken strand, the products can be returned to us.