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6.5″ 7/8 Lobes 4.8 Stages

Home  ›  Products  ›  Power Section Spec Sheets  ›  6.5″ 7/8 Lobes 4.8 Stages

Model No: DD650784.8

Click for a full page spec sheet suitable for printing

POWER SECTION

ROTOR SPECIFICATIONS
  inch mm
Overall Length 194.3 4934
Conour Length 187.8 4769
Eccentricity 0.226 5.74
Major Diameter 3.980 101.09
Head Diameter 3.500 88.90
   
Weight 497 (lbs) 225.4 (kg)
Material 17-4SS
Thread Form* 2 3/8 API REG

* Alternate or custom thread forms are available

STATOR SPECIFICATIONS
  inch mm
Overall Length 203.5 5169
Rubber Cut Back 8.0 203
Tube O.D. 6.50 165.1
Tube I.D. 5.00 127.0
Alternate Length 122 3099
   
Weight 841 (lbs) 381 (kg)
Number of Stages 4.8
Rubber Type NBR-1A, HSN-38, NBR-HR
Tube Material 4142 Seamless Tubing
FIT INFORMATION
NBR-1A & HSN-38 Minor Diameter
Stator Size inch mm
Standard 3.501 88.93
Oversize 3.529 89.64
Second Oversize    
     
 
Nominal Fit at 75 F (25 C)
Standard 0.027 0.69
Oversize -0.001 -0.03
Second Oversize    
FIT INFORMATION
NBR-HR Minor Diameter
Stator Size inch mm
Undersize    
Standard 3.520 89.41
Oversize    
Nominal Fit at 75 F (25 C)
Undersize    
Standard 0.008 0.20
Oversize    

 

PERFORMANCE SPECIFICATIONS PERFORMANCE DETAILS
      NBR-1A and HSN-38 NBR-HR
Torque Slope 7.977 ft-lb/psi 1.569 Nm/kPa Max Diff Press psi (kPa) 720 (4960) 1080 (7450)
Flow Range 150 to 400 GPM 570 to 1510 Litre/min Max Torque ft-lb (Nm) 5740 (7790) 8620 (11680)
Rotation 0.330 Rev/Gal 0.087 Rev/Litre Stall Diff Press psi (kPa) 1080 (7450) 1620 (11170)
Speed Range 49 to 140 RPM Stall Torque ft-lb (Nm) 8620 (11680) 12920 (17520)
Off Bottom Press 88 psi 610 kPa Max Recommended HP (kW) 144 (108) 207 (154)

 

Operating a power section above the maximum recommended differential pressure will reduce stator life. Performance Curves are for reference only. Actual power section performance may vary depending on the down hole temperature and rotor/stator fit. Performance data are subject to change without notice. Power calculation is based on maximum RPM and full torque. Stator sizes subject to change without notice.

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