M-300 Electric Driveheads

We provide a complete line of electric driveheads for all your production needs.

Our 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.

M-300 Electric Drivehead Data Sheet