API Spec Nodding Donkey Pumping Unit Compound Balanced Pump Units

Main Advantages:

1. The whole unit has a reasonable structure,with the features of working smoothly,
lower noise and easy maintenance.
2. Box type structure or"I" section structure has been adopted for the walking beam.It
has features of high strength,good rigidity and high bearing capacity
3. External seizing structure has been adopted for the brake system and with the help
of security device,the brake system has features of flexible operation, instant braking
and reliable security;The base and the foundation can be fixed together by foundation
bolts or compression bar.
4. Optimum Structure Design, Safety and Convenience: Two sets of brake systems with the automatic braking device ensure the units safety absolutely; enclosed unit design makes the units folded up and convenient during shipping, moving safely. 
5. High Reliability and Low Maintenance: High reliability by using antifriction bearings, heavy duty belt, heavy load sleeve roller chains, mechanical balance, perfectly lubricating system and self-protection and enclosed unit design ensure to carry load evenly and perfect rigidity through optimum design. 
6. Auxiliary system is fairly complete, not only for high volume production, but also for deep wells low volume production.