Low Profile Pumping Unit

Sanjack Petro owns strong pumping unit design capabilities. Sanjack Petro has designed and developed a range of pumping units based on API 11E standards and Chinese national standards.

  • Conventional API 11E pumping unit
  • RM Beam Pump (Reversmark Beam Pump)
  • Beam Balanced Pump Jack
  • Low Profile Nodding Donkey

Low-profile pumping units are designed for applications where pump height is significant. For locations with overhead irrigation systems, locations highly visible to the public, or locations with other conditions, the unit is an optimal solution that provides many of the same benefits as traditional pumping units.

The main differences between low-profile pumping units and conventional pumping units are:
• The construction of the thin device uses a uniquely designed crank arm, as well as belt and roller assemblies to provide the lowest possible overhead height
• The bearing bar is supported by two belts instead of a wire rope tie-down assembly

Low Profile Pumping Unit Structure


https://youtu.be/9ozSvvgYA0k

• Wells located in agricultural areas using overhead irrigation.
• Wells near developed areas that would benefit from lower visibility.
Advantages:
• Easy to install and maintain.
• Provide long-term service of over 25 years with proper maintenance.
• Reduce operating height by 10-15 feet.
Features:
• High load double taper bearings for roller assembly.
• Large capacity gear reducers are designed well beyond API requirements.
• Large low speed shaft, long service life, increased balance support.
• Field serviceable gear reducer design with bolted cranks.

Model
Type F320-256-100 F320-246-86 F228-246-86 F160-173-74 F114-173-64
Basic Parameters Rated Polish Rod Capacity (lbs) 25,600 24,600 24,600 17,300 17,300
Stroke Length (in) 100/86/74 86/74/62 86/74/62 74/64/54 64/54/44
Max. Stroke Frequency (r/min) 12 12 12 12 12
Balanced Type Crank Balanced
Crank Direction Clockwise
Gear
Reducer
Rated Torque(in.lbs) 320,000 320,000 228,000 160,000 11,400
Model 320D 320D 228D 160D 114D
Gear Type Double circular arc gear reducer or Involute gear reducer
Reducing Ratio 28.807 28.807 28.873 28.506 28.355
Center Range (in) 37.4 37.4 33.46 29.53 25.59
Center Height (in) 23.23 23.23 19.69 17.72 16.73
Oil Storage quantity
(U.S. Gal)
75 75 42 37 29
Lubricant 20# Gear lubricant in winter,200# Gear lubricant in summer
Sheave Diameter(in) 44″ 44″ 36″ 36″ 30″
Sheave groove type 5C 5C 4C 4C 4C
Balance Assembly Weight of Cranks (Lbs) 3731×2 3309×2 3406×2 2242×2 2002×2
Wrist Pin bore
Positions (in)
50 43 43 37 32
43 37 37 32 27
37 31 31 27 22
Belt Length* Width* Thickness 167.52*20*0.394 146.46*20*0.394 146.46*20*0.394 133.86*14.96*0.394 116.93*14.96*0.394
(in)
Fixed Type of main base Cross Bars (Levers)
Approax. Total Weight
ex. prime mover (lbs)
40029 39000 36788 28292 26032
Overall Dimensions
L*W*H (in)
328.7×88×156.3 357.6×88×138.2 357.6×88×138.2 323.3×88.4×122.9 305.9×88.2×110.9

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