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Top Hammer Drilling Tools for Drifting and Tunneling

Bit Diameter: 38mm-45mm
Length of drill rod: 2800mm-4310mm
Button bit design: Flat face, drop center, normal and retrac body.
Tungsten carbide (Buttons): Spherical, ballistic and conical.
Applications: Drifting, tunneling, bench

We have different designs for various rock formations, and a longer service life to decrease use costs for users.

Button bit	Dimensions D		Flushing hole (mm)		Buttons (mm)		Angle	Class	Part no.
Button bit	mm	in	Front No size	Gauge No size	Front.,No size	Gauge.,No size	Angle	Class	Part no.
	38 41 43 45	1 1/2 1 5/8 1 11/16 1 3/4	1×5 1×5 1×5 1×5	2×5 2×5 2×5 2×5	2×7 2×8 2×8 2×9	5×9 5×9 5×10 5×11	30° 30° 30° 30°	H H H H	3038R2807 3041R2807 3043R2807 3045R2807
	41	1 5/8	2×5.5	2×5	2×8	6×9	30°	S	3041R2808
	43 45	1 11/16 1 3/4	3×5 3×5	- 1×5	3×8 3×8	6×9 6×10	30° 30°	M M	3043R2809 3045R2809
Reaming tools
Pilot bit 6° taper	40	1 37/64 3	2×5	2×5.5	2×8	4×9	30°	-	3040R2806KP
Reaming bit 6° taper	76	3	-	-	-	8×11	35°	-	3076R2808KR
Dome bit	76	3	2×9	2×7	1×11	14×11	35°	-	3076R2815KD

Drill rod	Dimensions L			Dimensions D		Part no
Drill rod	mm	ft	in	mm	in	Part no
Hex rod 28 with thread R28/ R32	2800 3100 3700	9 10 12	2 2 2	28 28 28	1 1/8 1 1/8 1 1/8	2128R32R2828 2128R32R2831 2128R32R2837
Hex rod 32 with threads R28/ R32	4310	14	2	32	1 1/4	2132R32R2843

Coupling	L (mm)	Dimensions D		Part no
Coupling	L (mm)	mm	in	Part no
R32-R28	160	37	1 29/64	MX-R283716
Crossover coupling R28-R32	171	45	1 3/4	MX-R28R324517