B Type Pumping Unit / Beam Balanced Pumping Unit
The beam balanced pumping unit is designed to meet Intl Standards for pumping unit design requirements. In addition, all the individual components of the unit and the unit as a whole represent the best engineering design, production facilities, quality and field experience.
- Sanjack has been certified by ISO9001, SO14001 and OHSAS18001.
- Sanjack designs according to the principle of combining Intl standards, national standards and users’ views.
Beam balancing pumping unit is a kind of I – level lever system with beam balancing. The beam balancing device can be operated in either rotation direction. The four-bar lever system converts the rotational motion at the crank to the reciprocating motion at the horse’s head, which in turn converts to the downhole pump.
The design of the beam balancing pumping unit meets the requirements of Intl Standards for pumping unit design. In addition, all the individual components of the unit and the unit as a whole represent the best engineering design, production facilities, quality and field experience. When properly installed, maintained and operated within their load and torque ratings, beam balancing units provide years of reliable service.
Beam Balanced Pumping Unit structure
1.Base 2.Samson Post 3. Center Bearing 4. Clamp Block 5.Carrier Bar 6.Wireline Assembly 7. Horsehead 8.Walking Beam 9. Counterbalance Adjustment Screw Assembly 10.Beam Weights 11.Brakeshoe w/Lever Assembly 12.Saddle Bearing Lube Line 13.Tail earing 14.Pitman 15.Tail Bearing Lube Line 16.Crank Pin Bearing Assembly 17.Crank Arm 18.Gear Reducer 19.Sheave 20.Motor Rails 21. Brake Lever
Beam Balanced Beam Pump Features:
• Simple structure, easy operation, convenient maintenance and long service life.
• Involute or double circular herringbone gear reducer runs smoothly and reliably.
• The whole unit is low weight. Easy to install and transport.
• The unit is suitable for shallow Wells with short strokes and low loads.
• Excellent balance effect and energy saving.
| Model | ||||||||
| Item | B25D-67-36 | B40D-89-48 | B57D-76-48 | B57D-109-54 | B80D-133-54 | B80D-119-64 | ||
| Basic Parameters | Rated Polish Rod Capacity (lbs) | 6,700 | 8,900 | 7,600 | 10,900 | 13,300 | 11,900 | |
| Designat Stroke Length (in) | 36 | 48 | 48 | 54 | 54 | 64 | ||
| Max. Stroke Frequency (r/min) | 20 | 20 | 20 | 20 | 20 | 20 | ||
| Balanced Type | Beam Balanced | |||||||
| Crank Direction | Clockwise or Counterclockwise | |||||||
| Gear Reducer |
Rated Torque(in.lbs) | 25,000 | 40,000 | 57,000 | 57,000 | 80,000 | 80,000 | |
| Model | 25D | 40D | 57D | 57D | 80D | 80D | ||
| Gear Type | Double circular arc gear reducer or Involute gear reducer | |||||||
| Reducing Ratio | 32.85 | 32.18 | 31.73 | 31.73 | 31.74 | 31.74 | ||
| Center Range (in) | 16.54 | 17.72 | 19.685 | 19.685 | 21.65 | 21.65 | ||
| Center Height (in) | 11.811 | 12.2 | 13.386 | 13.386 | 13.78 | 13.78 | ||
| Oil Storage quantity(U.S. Gal) | 8 | 9 | 12 | 12 | 16 | 16 | ||
| Lubricant | 20# Gear lubricant in winter,200# Gear lubricant in summer | |||||||
| Sheave Diameter(in) | 20″ | 20″ | 25″ | 25″ | 25″ | 25″ | ||
| Sheave groove type | 2B | 3B | 3B | 3B | 3B | 3B | ||
| Balance Assembly | Weight of Cranks (Lbs) | 115×2 | 211×2 | 211×2 | 211×2 | 211×2 | 213×2 | |
| Wrist Pin bore Positions (in) |
stroke 1 | 12.01 | 17.72 | 17.72 | 17.72 | 17.72 | 18.11 | |
| stroke 2 | 12.01 | 17.72 | 17.72 | 17.72 | 17.72 | 18.11 | ||
| stroke 3 | 7.99 | |||||||
| stroke 4 | 7.99 | |||||||
| Distance between equalizer and center bearing, in | stroke 1 | 26.65 | 45.28 | 45.28 | 45.28 | 45.28 | 41.93 | |
| stroke 2 | 32.68 | 58.27 | 58.27 | 58.27 | 58.27 | 54.92 | ||
| stroke 3 | 26.65 | |||||||
| stroke 4 | 32.68 | |||||||
| Wireline | Type | 16 6×37+IWR-1770 | 22 6×37+IWR-1770 | 22 6×37+IWR-1770 | 22 6×37+IWR-1770 | 22 6×37+IWR-1770 | 22 6×37+IWR-1770 | |
| Length, in | 103 | 163.5 | 169.3 | 176 | 176 | 193 | ||
| Other | Overall Dimensions L*W*H (in) |
148×75×120 | 209×82×142 | 211×82×142 | 223×87×151 | 223×87×151 | 220×87×155 | |
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