8
Blind hole head
CBH 5
Raise diameter
1524 mm
60 in
Pilot Rod Head Stem Saddles Cutters
with saddles
in mm Part No. Part No. Part No. Position Part No. Number
1-2 7008-2006
12 1/4 311 7008-9187 7008-1215-30 7008-3831 3-4 7008-2005 8
5-8 7008-2007
Weights Kg lb
Pilot Rod 400 800
Stem 600 1320
Head 1900 4190
Saddles 600 1320
Gauge rollers 250 550
Cutters 800 1760
Total 4450 9820
Pilot hole drilling
Pilot Bits
Diameters
229 to 381 mm
9 to 15 in
SCMH = Sealed bit for any rock formation. IADC code 725. Other bit types on request.
XXX=
Professional nozzle size. Ex: 205 = 20.5 mm ((13/16”)
Diameter Pin size Weight Type Part No.
in mm API, reg kg lb
9 229 4 1/2” 45 100 229SCMH 7006-7229-7XXX
9 7/8 251 6 5/8” 62 137 251SCMH 7006-7251-7XXX
11 279 6 5/8” 75 165 279SCMH 7006-7279-7XXX
12 1/4 311 6 5/8” 100 220 311SCMH 7006-7311-7XXX
13 3/4 349 6 5/8” 120 164 349SCMH 7006-7349-7XXX
15 381 7 5/8” 160 353 381SCMH 7006-7381-7XXX
6-2/160
CBH 5 1524
8 4 5
1 2
7 3 6
Cutter position for required spacing
Spacing Cutter Cutters Gauge roller
Rock condition mm in type Part No. Number Part No.
Soft to medium 51 2 CMR-52 7008-4152-76 8
Medium to hard 22.5 1
CMR-41 7008-4141-76 4
7008-4851-72
CMR-52 7008-4152-76 4
1800
826
400