11° Tapered Drilling Tool

According to the different choices of customers, we offer four quality products, including Grade A, Grade B, Grade C and Grade D. Customers can choose suitable drill rod according to different hardness of rock and types of rock drilling tools. Grade A drill rod QSAAA and GTIII can be applied to solid rock, III level or above and f≥12 rocks according to Protodikonov’s Hardness Coefficient of Rock. Grade B drill rod QSAA and G30 is suitable for IV level or above and f≥12 rocks, Grade C and Grade D drill rod suitable for IV level or below and f≤8 rocks.

11°  tapered drilling tools

Button bit  (11°)	Dimensions (D)		Flushing hole (mm)		Buttons (mm)		Angle	Part no.
	mm	inch	Front No size	Gauge No size	Front No size	Front No size
H22	34 36 38 41	1 11/32” 1 27/64” 1 1/2” 1 5/8”	2×4.5 2×5 2×5 2×5.5	1×4.5 1×5 1×5.5 1×5.5	5×7 5×8 5×9 5×9	2×7 2×7 2×7 2×7	35° 35° 35° 35°	30342207-11 30362207-11 30382207-11 30412207-11
H22	34 36 38 41	1 11/32” 1 27/64” 1 1/2” 1 37/64”	1×4 1×4 1×5 1×5	2×4 2×4 2×5 2×5	6×7 6×7 6×8 6×8	2×7 2×7 2×7 2×8	35° 35° 35° 35°	30342208-11 30362208-11 30382208-11 30412208-11
H25	36 38 41 43	1 27/64” 1 1/2” 1 5/8” 1 11/16”	1×4 1×5 1×5 1×5	2×4 2×5 2×5 2×5	5×8 5×8 5×9 5×9	2×7 2×8 2×7 2×8	35° 35° 35° 35°	30362507-11 30382507-11 30412507-11 30432507-11

Chisel bit

H22	30 32 34 36 38 40	1 3/16” 1 1/4” 1 11/32” 1 27/64” 1 1/2” 1 37/64”	2×5 2×5 2×5 2×5 2×5.5 2×5.5	– – – – – –	– – – – – –	– – – – – –	– – – – – –	313022-11 313222-11 313422-11 313622-11 313822-11 314022-11
H25	30 32 34 36 38 40	1 3/16” 1 1/4” 1 11/32” 1 27/64” 1 1/2” 1 37/64”	2×5 2×5 2×5 2×5 2×5.5 2×5.5	– – – –	– – – –	– – – –	– – – –	313025-11 313225-11 313425-11 313625-11 313825-11 314025-11

Tapered drill rod (11°)	Dimensions L			Dimensions D		Part no.
	mm	ft	inch	mm	inch
Hex shank 22*108mm	610 1220 1830 2000 2440 3050 3200 3660	2 4 6 6 8 10 10 12	– – – 7 – – 6 –	22 22 22 22 22 22 22 22	7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8	10220611 10221211 10221811 10222011 10222411 10223011 10223211 10223611