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Down the hole bit&hole opener

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Bit face selection
Face type Type

Application

Flat face Very hard and abrasive rock formation
Concave face All kinds of rock formation, especially for medium-hard and homogenous formation
Convex face Soft to medium-hard
Drop center bit Soft to medium-hard and fissured rock formation

Carbide Button shape selection

                                                                                                                                                                           Double step         Spherical              Ballistic              Semi-ballistic

Down the hole bit for 3.5inch hammer

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front
85 6*13 4*12 2 4.8
90 6*14 4*13 2 4.9
95 6*14 4*13 2 5.2
100 6*14 5*13 2 5.8
102 6*14 5*13 2 5.9
105 6*14 5*13 2 6.2
115 8*14 7*13 2 6.7
125 8*14 7*13 2 7.2

Down the hole bit for 4inch hammer

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front
105 7*14 6*13 2 8.0
110 8*14 6*13 2 8.6
115 8*14 7*13 2 8.5
125 8*14 7*13 2 9.5
130 8*14 7*13 2 10.1
135 8*16 7*14 2 10.8
138 8*16 8*14 2 11.7
150 8*16 8*14 2 11.6

Down the hole bit for 5inch hammer

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front
135 7*18 7*14 2 15.2
140 8*16 9*14 2 15.5
146 8*18 8*14 2 15.7
150 8*16 9*14 2 15.8
155 8*18 8*14 2 16.4
160 8*16 8*16 2 17.1
165 8*18 8*16 2 17.7
178 9*18 10*16 2 20.7

Down the hole bit for 6inch hammer

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front
152 8*16 4*16+4*14 2 23.2
165 8*18 4*18+5*16 2 24.0
172 8*18 4*18+4*16 2 25.1
178 9*18 5*18+5*16 2 26.0
185 8*19 5*19+5*16 2 26.5
190 10*18 5*16+5*16 2 29.2
195 10*18 5*18+5*16 2 29.9
204 10*18 6*18+7*16 2 32.4

Down the hole bit for 8inch hammer

 

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front
242 10*18 6*18+9*16 2 75
254 12*18 12*18+9*16 2 80
280 12*18 12*18+11*16 2 100
305 14*18 14*18+11*16 2 110
313 14*18 16*18+12*16 2 112
320 14*18 16*18+13*16 2 115
330 14*18 16*18+13*16 2 120
350 16*18 16*18+17*16 2 125

Down the hole bit for 12inch hammer

 

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front Back
310 15*19 9*19+10*19+9*16 12*12 3 140
315 18*18 9*18+15*18+9*16 6*16 3 145
320 18*18 9*18+15*18+9*16 6*16 3 150
333 18*19 9*18+15*18+14*16 6*12+6*16 3 155
350 15*19 9*19+15*19+15*16 12*12 3 170
381 18*18 12*18+18*18+21*16 9*14 3 190
400 18*18 12*19+18*19+29*16 12*12 3 230
420 18*19 12*19+18*19+30*16 12*12 3 235

Down the hole bit for 20inch hammer

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front
500 24*19 18*19+48*19+32*16 3 480
550 24*20 20*20+15*36+33*16 3 510

Down the hole bit for 32inch hammer

Order guide: Bit Dia.+Shank+Face shape+Carbide button shape

Bit Dia. mm Qty*Button Dia. mm Qty air holes Weight kg
Quter Front
800 30*20 24*20+60*20+48*18+42*18 6 680
1000 48*20 36*20+192*20+42*18+39*18 6 984

 

 

 

 

 

 

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