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Top Hammer Drilling 6 Degree 12 Degree R25 R28 R32 Pilot Adapter for Reamer Bit

Reaming Drill Bit with R28 / T45 / T5 1/ ST58 Reaming bits were widely used in quarrying or mining for blast hole drilling, with pilot adaptors, the drilling direction can be ensured and accurate. Pilot holes are drilled depth and then reamed out to a larger diameter in a second pass required...

Reaming Drill Bit with R28 / T45 / T51/ ST58


Reaming bits were widely used in quarrying or mining for blast hole drilling, with pilot adaptors, the drilling direction can be ensured and accurate. Pilot holes are drilled depth and then reamed out to a larger diameter in a second pass required when hole diameter exceeds the capabilities of the rock drill and drilling tools available.


This type of bit is used for making large cut holes in drifting and tunneling. A smaller hole is first drilled and then reamed to the final size in combination with a pilot adapter. Large diameter service holes from level to level for drainage, electrical cable or pipe lines routinely used to ream cut holes for development rounds and for long hole blasting of drop raise.


Applications

•Suitable for small hole range

•Widely used in Dimensional Stone Quarrying Industry

•Widely used in Underground Mining Industry 


Reaming bits model and specification:

PIC.

Model

Dia.

Gauge button

Front button

Taper

A

6° Taper reaming button bits (spherical or parabolic buttons)

64

8*Φ9mm

2*Φ10mm

64

8*Φ9mm

4*Φ8mm

65

8*Φ9mm

4*Φ8mm

76

8*Φ10mm

4*Φ10mm

76

8*Φ10mm

4*Φ9mm

76

8*Φ11mm

2*Φ11mm

76

7*Φ11mm

4*Φ11mm

76

8*Φ14mm

4*Φ13mm

89

8*Φ12mm

4*Φ12mm

89

8*Φ12mm

4*Φ11mm

89

8*Φ12mm

4*Φ10mm

89

8*Φ13mm

4*Φ10mm

89

8*Φ12mm

4*Φ11mm

102

8*Φ14mm

4*Φ12mm

12° Taper reaming button bits (spherical or parabolic buttons)

89

8*Φ12mm

4*Φ10mm 

12°

102

8*Φ12mm

4*Φ12mm

12°

102

8*Φ14mm

4*Φ12mm 

12°

127

10*Φ13mm

8*Φ13mm 

12°

127

10*Φ13mm

10*Φ13mm 

12°

B

6° Taper chisel reaming bits

60

carbide:12*8mm (4pcs)

64

65

70

76

carbide:12*10mm (4pcs)

80

89

10° Taper chisel reaming bits

70

carbide:12*8mm (6pcs)

10°

75

80

90

100

carbide:12*10mm (6pcs)

120

C

Pilot adaptors 6°

chisel:Φ26/28*12*8mm

L=240/300mm,thread:R25/28/32*12.7mm,6°

Pilot adaptors 12°

chisel:Φ35/40*15*10mm

L=250mm,thread:R25/28/32*12.7mm,12°

D

Thread chisel reaming bits

60

carbide:12*8mm (4pcs)

RF25

70

80

carbide:12*10mm (6pcs)

RF32

90

100

120

130

RF38

150

E

Integral reaming button bits 

89

12*Φ11mm

2*Φ11mm+1*Φ10mm

R32/R38*12.7

102

12*Φ12mm

2*Φ12mm+1*Φ10mm

R32/R38*12.7

102

12*Φ14mm

2*Φ10mm+1*Φ10mm

R32/R38*12.7

127

8*Φ14mm

8*Φ12mm+2*Φ12mm

R38*12.7

F

Dome reaming bit (spherical or parabolic buttons)

76

9*Φ13mm

1*Φ13mm

R32/T38/T45

89

14*Φ13mm

1*Φ13mm

R32/T38/T45

102

16*Φ13mm

1*Φ13mm

R32/T38/T45

127

18*Φ13mm

1*Φ13mm

R32/T38/T45

152

18*Φ14mm

2*Φ14mm

T45/T51/ST58/ST68

152

9*Φ16mm

6*Φ16mm

ST58/ST68

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