Drilling Motor
Selection Guide
115
in.
in.
ft.
1/2
3/4
4/5
5/6
6/7
7/8
3Þ
4Þ
m
mm
mm
l
l
l
l
l
l
l l
l
l
l
l l
l
l
l
l l
l
l
l
l
l l
l
l
l
l
l l
l
l
l
l l
l
l
l
l
l l
l
l l
l
l l
l
l
l
l l
l
l
l l
l l
l
l
l l
l l
l
l
l l
l l
l
l
l l
l l
l
l
l
l l
l l
l
l
l l
l
l
l l
l l
l
l
l l
l l
l
l
l l
l l
l l
l
l l
l l
l
l
l l l
l
l
l
l l
l l
l
l
l
l l
l l
l
l
l l
l l
l
l
l l l
l l
l
l l
l l
l
l
l l l
l
l l
l l
l l
1 7/16
to 2 1/4
7.1
2.16
to 57
37
111/16
to 3
11.1
3.38
to 76
43
2 1/8
to 3 3/4
10.7
3.26
to 95
54
2 3/8
2 7/8
13.9
4.24
73
to 4
13.1
3.99
to 102
60
13.4
4.08
3 1/2
8.4
2.56
89
2 7/8
to
12.6
3.84
to
73
4 1/2
8.2
2.50
114
7.3
2.23
4 1/2
21.9
6.68
114
3 3/8
to
17.0
5.18
to
86
5
17.4
5.30
127
4 1/4
15.7
4.79
108
3 1/2
to
12.0
3.66
to
4 3/4
9.1
2.77
121
89
16.5
5.03
4 3/4
21.2
6.46
121
3 3/4
to
17.2
5.24
to
95
5 7/8
21.0
6.40
149
16.2
4.94
25.6
7.80
23.6
7.19
6
15.6
4.75
152
4 3/4
to
13.9
4.24
to
121
6 3/4
23.6
7.19
171
16.4
5.00
21.2
6.46
Note: Overall lengths shown are maximum.
Imperial
Power Sections
Bearing Assy
Housing
Sub
Metric
u
u
u
u
u
u
u
u
u
u
u
u
u
u
u
u
u
u
Overall Length
Bearing Assembly
Adjustable
or Straight
Housing
Power Section
(Rotor & Stator)
Dump
or
Top
Sub
