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Register here Sign inOur M-300 electric drivehead employs the highly efficient and extremely safe hydrodynamic braking system. Our dual motor system design is used in high-horsepower applications in conjunction with our high-volume/high-lift progressive cavity (PC) pumps. As part of our commitment to safety, all our direct drives have a fully enclosed and hinged belt guard. Each drive is tested and inspected to meet our quality requirements.
Features/Benefits
- Robust frame
- Bearing box designed with a three-bearing system
- Detachable leak-free stuffing box
- Large brake reservoir for heat dissipation
- Repeatable and reliable brake curve
- Induction-hardened seal surfaces eliminate shaft grooving and increase seal life
- Operator-friendly guards and motor adjustments
- Easy-to-adjust hinged door for simple belt tightening
- Easy-to-adjust motor height
- Accessible fill/drain spouts for easy oil changes
- Minimal maintenance
- Service and technical support
Options
- Rope-style stuffing box
- JamPak stuffing box
- Leak-free integral stuffing box
- Retrofit stuffing box
Accessories
- Anti-enjection clamp
- Lock-out device
- Polished rod guard
- Booth guard
- Support arms
- Shipping/support stands
- Tachometer
M-300 Electric Driveheads Specifications
Drive type |
Direct |
Shaft type |
Hollow |
Drive style |
Bearing box |
Input style |
Vertical |
Drive ratio |
1:1 |
Backspin control |
Hydrodynamic |
M-300 Electric Drivehead Ratings
Max. output torque |
3,500 ft-lbs (4745 Nm) |
Thrust bearing |
350,700 ISO lbf |
Thrust bearing* |
90,9200 Ca90 lbf |
Thrust bearing** |
48,130 750 million cycles lbf |
Maximum speed |
600 RPM |
Horsepower rating*** |
120–300 hp |
Frame type |
Dual motor |
Compatible frame size NEMA |
364T, 365T, 404T, 405T, 444T, 445T |
Compatible frame size IEC |
225S, 225M, 250S, 250M, 280S, 280M |
Polish rod size |
1½ or 2 in. (38 or 51 mm) |
Max. operating temperature |
284 °F (140 °C) |
M-300 Electric Drivehead Dimensions (Excluding Motor)
Height with retro stuffing box |
74¾ in. (1900 mm) |
Height with integral stuffing box |
58⅜ in. (1483 mm) |
Width |
42 in. (1067 mm) |
Input shaft size |
4¼ in. (108 mm) |
Weight (no stuffing box) |
2,100 lb (953 kg) |
*Ca90 load rating is for 90 million revolutions. Reducing load by one-half increases life 10 times. Reducing RPM by one-half doubles hours of life.
**Approximately 3 years at 500 RPM
***Maximum horsepower rating based on frame size only. Care must be taken in selecting motor and sheave combinations to ensure input rod torque is not exceeded.



