Bit face shape selection:

1. Drop Center Bit

For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.

2. Concave Face

The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.

3. Convex Face

For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.

4. Double Gauge Face

This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.

5. Flat Face Bit

This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

Carbife button shape selection:

1. Domed/Round Button

Domed/Round Buttons are usually used as gauge buttons of DTH Bits, suitable for every abrasive and very hard formations.

2. Parabolic/Semi-Ballistic Buttons

Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations.

3. Ballistic Button

Ballistic Buttons are usually used as front buttons of DTH Bits, suitable for medium abrasive and mesium hard formations. They can also be used as gauge buttons if the rock is soft.

4. Sharp Button

Sharp Buttons are usually used as front buttons of DTH Bits for soft formations where fast penetration rates are possible.

5. Flat Button

Flat buttons are usually used as protection buttons to reduce wear on rubbing surfaces of dth bits.

About us:


Sollroc offer THE COMPLETE SOLUTION including DTH drill bits, DTH hammer, RC hammers, RC bits, ODEX system, Symemtrix system, drill rods, shank adapters, accessories and added value services.
- We offer top hammer equipment for every application, such as underground mining and quarries, road and construction.
- We've been involved in the mining industry for 10 years. We look for excellent performance in our products and service.




shank can be available:

1), Dia. 64mm-70mm shank Bulroc BR1
2), Dia. 70mm-95mm shank Halco MACH20, Bulroc BR2
3), Dia. 90mm-102mm shank COP32, COP34, Halco MACH303, M30, DHD3.5, Bulroc BR3
4), Dia. 105mm-152mm shank COP44, DHD340, Halco MACH44, SD4, M40, QL40, Bulroc BR4
5), Dia. 135mm-165mm shank COP54, DHD350R, COP54, Halco MACH50, SD5, M50, QL50, Bulroc BR5
6), Dia. 152mm-254mm shank COP64, DHD360, SD6, M60, QL60, Bulroc BR6
7), Dia. 203mm-330mm shank COP84, DHD380, SD8, QL80
8), Dia. 254mm-380mm shank SD10, Numa100
9), Dia. 305mm-508mm shank DHD1120, SD12, N120, N125
10), Dia. 405mm-864mm shank SD15, SD18
11), VKP80, VKP95, CIR90, CIR100, CIR110, CIR150, CIR200...


We can also provide related products DTH hammers, ODEX system, symmetrix systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc


Product photos












Quality warranty:

Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.