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Permanent Magnetic Motor Driveheads
The Permanent Magnetic Motor (PMM) series of direct drives offer the highest level of energy efficiency. The M-75 PMM is designed for medium- to high-horsepower applications, while the M-105 PMM is designed for high-horsepower applications.
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Description
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Specifications
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Resources
Our dedication to safety is front and center in the PMM, with an integrated failsafe resistive brake, a single rotating external part, and no overhung motor mass for a safe install.
The PMM drive is environmentally friendly, requiring less energy to operate, and it boasts an extremely quiet performance.
Features/Benefits
- Safety provided by:
- Integrated failsafe electronic-resistive brake
- Elimination of rotating parts, such as belts and sheaves
- Perfectly balanced lifting with no overhung motor mass
- Highly efficient motor that reduces electrical energy consumption and greenhouse gas emissions
- Delivers exceptionally high-starting torque and rated torque efficiently over entire operating revolutions per minute (RPM) value
- Quiet operation—68 dB at 10 ft (3 m)
- Provides a fully optimized system when paired with the Guardian II VFD
Permanent Magnetic Motor Driveheads Style Specifications
| M-75 PMM | M-105 PMM | |
| Drive type | Direct | Direct |
| Shaft type | Hollow | Hollow |
| Drive style | Bearing | Bearing |
| Input style | Vertical | Vertical |
| Drive ratio | 1:1 | 1:1 |
| Backspin control | Integrated resistive braking through VFD | Integrated resistive braking through VFD |
Permanent Magnetic Motor Driveheads Ratings Specifications
*Ca90 load rating is for 90 million revolutions. Reducing load one-half increases life 10 times. Reducing RPM by one-half doubles hours of life. **Efficiency and RPM/torque are typically derated at higher temperatures.
| M-75 PMM | M-105 PMM | |
| Max. output torque | 750 ft-lbs (1,017 Nm) | 1,000 ft-lbs (1,355 Nm) |
| Speed range | 30 to 450 RPM | 30 to 450 RPM |
| Thrust bearing | 165,000 ISO lbf (Optional 297,000 ISO lbf) | 165,000 ISO lbf (Optional 297,000 ISO lbf) |
| Thrust bearing* | 43,000 Ca90 lbf (Optional 77,000 Ca90 lbf) | 43,000 Ca90 lbf (Optional 77,000 Ca90 lbf) |
| Polish rod size | 1¼ in. (32 mm) or 1½ in. (48 mm) | 1¼ in. (32 mm) or 1½ in. (48 mm) |
| Max. operating temperature** | 112 °F (50 °C) | 112 °F (50 °C) |
Permanent Magnetic Motor Driveheads Dimension Specifications
| M-75 PMM | M-105 PMM | |
| Height with retro stuffing box | 69.7 in. (1,770 mm) | 72.7 in. (1,847 mm) |
| Height with integral stuffing box | 53.2 in. (1,350 mm) | 56.2 in. (1,427 mm) |
| Diameter | 30 in. (760 mm) | 30 in. (760 mm) |
| Width | 37 in. (940 mm) | 37 in. (940 mm) |
| Weight (no stuffing box) | 1,430 lbs (650 kg) | 1,550 lbs (705 kg) |