CIR Series DTH Drill Bit

DTH bits (also called DTH bits or spline connection bit) is connected through the drill bit spline and impactor, for impact orientation and rotation of a transmission, braze the broken rock. Mainly used in large mines (open pit and underground mining), open architecture, and a large stone mining engineering construction conditions.

Technical Data of CIR Series DTH Drill Bit(Middle ＆ Low Air Pressure)

Diameter		No x Buttons Diameter(mm)		Button Angle	Air Holes	Weight(kg)
mm	inch	Gauge Buttons	Front Buttons	Button Angle	Air Holes	Weight(kg)
Drill Bits for CIR76A Hammers
76	3	5x13	3x12	45	2	2.2
80	3 1/5	5x13	3x12	45	2	2.5
Drill Bits for CIR90A Hammers
90	3 1/2	6x14	2x13 +2x12	45	2	3.6
100	4	6x14	3x13 +2x12	45	3	4.0
110	4 1/3	6x14	3x13 +2x12	45	3	4.7
120	4 3/4	6x14	3x13 +2x12	45	3	5.2
130	5 1/8	6x14	3x14 +2x12	45	3	6.2
140	4 1/2	9x14	3x14 +2x12	45	3	7.8
150	6	9x14	3x14 +2x12	45	3	8.4
Drill Bits for CIR110A Hammers
110	4 1/3	6x14	3x13 +3x12	45	3	6.0
120	4 3/4	6x14	3x13 +4x12	45	3	6.5
130	5 1/8	6x14	3x14 +4x12	45	3	6.9
140	5 1/2	9x14	3x14 +5x12	45	3	8.5
150	6	9x14	3x14 +5x12	45	3	9.1
165	6 1/2	9x14	3x14 +6x12	45	3	9.9
175	7	9x14	3x14 +6x12	45	3	11.2
Drill Bits for CIR150A Hammers
155	6 1/5	9x16	6x16 +3x14	45	3	16.6
165	6 1/2	9x16	6x16 +4x14	45	3	18.6
180	7	9x16	9x16 +4x14	45	3	20.8
200	8	9x16	9x16 +4x14	45	3	23.0