GQL 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 GQL Series DTH Drill Bit(High 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 GQL30 Hammers
90	3 9/16	8x12	7x11	38	2	4.7
95	3 3/4	8x12	7x11	38	2	4.9
100	3 15/16	8x12	7x12	38	2	5.0
105	4 1/8	8x14	7x12	38	2	5.5
Drill Bits for GQL40 Hammers
105	4 1/8	7x16	6x14	38	2	9.0
110	4 5/16	7x16	6x14	38	2	9.2
115	4 1/2	7x16	6x14	38	2	9.5
120	4 3/4	8x16	8x13	38	2	10.3
125	4 15/16	8x16	10x13	38	2	11.5
130	5 1/8	8x16	8x14	38	2	12.3
Drill Bits for GQL50 Hammers
138	5 1/2	7x18	7x15	38	2	15.6
146	5 3/4	7x18	7x15	38	2	16.5
152	6	8x16	8x15	38	2	17.0
165	6 1/2	8x18	8x16	38	2	18.0
178	7	8x18	10x16	38	2	24.0
185	7 1/4	8x18	10x16	38	2	26.0
203	8	10x18	8x18 +6x16	38	2	31.0
Drill Bits for GQL60 Hammers
152	6	8x18	4x16 +4x14	38	2	24.0
165	6 1/2	8x18	8x16	38	2	25.0
178	7	8x18	10x16	38	2	27.0
185	7 1/4	8x18	10x16	38	2	28.0
194	7 1/2	10x18	13x16	38	2	29.0
203	8	10x18	8x18 +6x16	38	2	33.0
216	8 1/2	10x18	8x18 +6x16	38	2	51.0
235	9 1/4	12x18	30x16	38	2	60.0
254	10	12x18	12x18 +8x16	38	2	69.0
Drill Bits for GQL80 Hammers
203	8	10x18	8x18 +6x16	38	2	35.0
216	8 1/2	10x18	8x18 +6x16	38	2	49.0
235	9 1/4	12x18	30x16	38	2	58.0
254	10	12x18	12x18 +8x16	38	2	71.0
275	11	12x18	12x18 +9x16	38	2	85.0
305	12	12x18	12x18 +9x16	38	2	95.0