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The ROTAFLEX pumping unit
The ROTAFLEX pumping unit has mixed together major features and
advantages of all kind of pumping units through years of research
and development. As a unique engineering breakthrough, the 100%
mechanical ROTAFLEX is especially suitable for producing high
volume fluid in deep wells with rod pump and heavy oil recovery.
Lots of products had been exported to America, Canada, Cuba,
Argentina, Kazakhstan, Uzbekistan, Middle East and other countries.
It has proved that the pump unit with the international advanced
level combines the advantages of high efficiency, reliability and
1. Slow, Long Strokes: Long stroke make high coefficient of
fullness, less fluid pounding；Slow period means less wear on
downhole equipments and little cost.
2. Belt Transmission: A long life heavy duty belt transmission can
absorb the shock during stroke reverse, thus effectively reduce the
stress on downhole components to make rod strings run smoothly.
3. Low Torque Demand: The torque demand is greatly reduced due to
the short torque arm which is only 0.46m. Thereby, smaller prime
mover and gear box may be possible which can cut down energy costs
by 10% to 40% comparing to other manual lift system.
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.
|m Stroke Length||8||8||7.3||7.0||6.0||5.0||4.5|
|t Peak Polished Rod Load||22.7||20||16.3||14||12||10||8|
|min-1 Max of Strokes Per Minute||4||4||4||4||4||5||5|
|min-1 Min of Strokes Per Minute||Very Low|
|t Counterweight Base||6.1||4.6||4.2||2.7||2.4||1.9||1.7|
|t Counterweight-Max Aux.||8.6||9.0||7.2||7.1||6.4||4.8||3.5|
|t Shipping Weight||26.5||22||19.5||16.5||15.5||12.0||11.0|
|External Size(L×W×H)||7.4×2.6 ×13.4||7.4×2.4 ×13.4||6.6×2.4 ×12.4||6.1×2.1 ×11.8||5.5×2.1 ×10.8||5.5×1.9 ×8.9||5.2×1.9 ×8.2|
|Shipping Size(L×W×H)||13.4×2.6 ×3.1||13.4×2.4 ×2.8||12.4×2.4 ×2.8||11.8×2.1 ×2.6||10.8×2.1 ×2.5||8.9×1.9 ×2.5||8.2×1.9 ×2.5|
|kN·m Torque of Gearbox||37||37||37||26||26||18||13|
|Electromagnetism Automatic Braking System||Yes||Yes||Yes||Yes||Yes||N/A||N/A|
|Note: Automatic Braking System is available according to the