M41 Long-Stack Mud Lubricated Bearing Assembly
M41 Long-Stack Mud Lubricated Bearing Assembly
M41 Mud Motor
The Future is Now
By lengthening bit-to-bend, our engineers have packed even more into our industry-leading mud lubricated motor design to give drillers more power—and more confidence—to deliver high torque and high ROP.
Key features
- Lengthened bit-to-bend, fixed bend and adjustables
- Greatly reduced side load on lower restrictor bearings
- Increased weight-on-bit capacity
- Longer, 3-part bearing stack compression system
- Split ring mandrel catch, new spacers and crush ring system
- Mandrel flex relief
- Cold-rolled 30 deg round housing thread
Specifications (Imperial)
Swipe sideways to see all columns →
| Operating capacity | Static capacity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| BA OD (in) | Power OD (in) | Bit box to adj. bend (in) | Bit box to fixed bend (in) | Hole size (in) | Bit box thread (API) | WOB (lb) | Max bit overpull (lb) | WOB to re-run (lb) | Bit overpull to re-run (lb) | Body overpull* (lb) | Adj. make-up torque (ft-lb) |
| 5 ¼ | 5.25 | 62 | 51 | 6 ⅛ – 7 ⅞ | 3 ½ Reg | 74,000 | 74,000 | 230,000 | 155,000 | 424,000 | 18,000 |
| 7 ¼ | 6.75 | 72 | 59 | 8 ½ – 9 ⅞ | 4 ½ Reg | 95,100 | 95,100 | 487,500 | 131,500 | 539,000 | 35,000 |
| 7.00 | 72 | 59 | 8 ½ – 9 ⅞ | 4 ½ Reg | 95,100 | 95,100 | 487,500 | 131,500 | 659,000 | ||
| 7.25 | 72 | 59 | 8 ½ – 9 ⅞ | 4 ½ Reg | 95,100 | 95,100 | 487,500 | 131,500 | 659,000 | ||
*Body overpull referenced to stator OD.
Specifications are based on as-new condition and are subject to change without notice. Other sizes available upon request. Motor assemblies are available in a multitude of speeds and configurations.
Specifications (Metric)
Swipe sideways to see all columns →
| Operating capacity | Static capacity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| BA OD (mm) | Power OD (mm) | Bit box to adj. bend (m) | Bit box to fixed bend (m) | Hole size (mm) | Bit box thread (API) | WOB (daN) | Max bit overpull (daN) | WOB to re-run (daN) | Bit overpull to re-run (daN) | Body overpull* (daN) | Adj. make-up torque (N·m) |
| 133 | 133 | 1.57 | 1.30 | 155 – 200 | 3 ½ Reg | 32,900 | 32,900 | 102,300 | 68,900 | 189,000 | 24,400 |
| 184 | 171 | 1.83 | 1.50 | 216 – 251 | 4 ½ Reg | 42,300 | 42,300 | 216,900 | 58,500 | 240,000 | 47,500 |
| 178 | 1.83 | 1.50 | 216 – 251 | 4 ½ Reg | 42,300 | 42,300 | 216,900 | 58,500 | 293,000 | ||
| 184 | 1.83 | 1.50 | 216 – 251 | 4 ½ Reg | 42,300 | 42,300 | 216,900 | 58,500 | 293,000 | ||
*Body overpull referenced to stator OD.
Specifications are based on as-new condition and are subject to change without notice. Other sizes available upon request. Motor assemblies are available in a multitude of speeds and configurations.
Contact Us
Questions about our products or services? We are here to help.
Fill out the form below to contact our team by email. We will get back to you as soon as possible.
