Dynomax Drilling Tools Inc mud motors

Motor specifications

8 in (203 мм) 6-7 Lobe 4.0 Stage HR ML
6 ¾ (172 мм) in 7-8 Lobe 5.0 Stage HR ML
5 in (127 мм) 7-8 Lobe 3.8 Stage HR Series 2
4 ¾ (120.7 мм) in 7-8 Lobe 3.8 Stage HR ML
3 ¾ in (95 мм) 7-8 Lobe 2.3 Stage Series 1
Description Specifications
Section type
Mud lube
Mud lube
Oil sealed
Mud lube
Oil sealed
Recommended drill bit diameter, mm
251-311
200-251
152-171
143-171
121-149
Drill bit thread
6 5/8 REG (З-152)
4 ½ REG (З-117)
3 ½ REG (З-88)
3 ½ REG (З-88)
2 7/8 REG (З-76)
Drill bit load limit, daN
64920
42000
31800
22000
14170
Tensile load limit during tool trip, daN
64920
42000
31800
22000
14170
Tensile load limit, after which motors can be reused, daN
241000
167700
146000
116000
69000
Tensile load limit during emergency hoisting, daN
243000
279400
243000
193300
114000
Make-up torque of adjustable bend angle section, N*m
54233
33900
16270
13600
4745
The distance from the drill bit to adjustable bend angle section, mm
1902
1670
1430
1410
1285
Mass, kg
1265,6
914
496,2
497
198,7
PDM motor lobe configuration
6/7
7/8
7/8
7/8
44050
Rotor working section length, m
4
5
3,8
3,8
2,3
Motor shaft rotation without load, rpm
0,04
0,07
0,14
0,14
0,2
Maximum differential drop, kPa
6481
8136
7481
6205
2413
Maximum torque, N*m
18737
14439
6730
5600
1505
Maximum power, kW
267
219
89
67
17
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