Power Section Specification (Metric)
475-7822
120.7 mm 7:8 Lobes 2.2 Stages
Rotor Specifications
Overall Length 2717.8 mm
Avg. Diameter 66.23 mm
Contour Length 2565.4 mm
Eccentricity 4.17 mm
Major Diameter 74.57 mm
Head Diameter 69.85 mm
Head Length 152.4 mm
Weight 76 kg
Thread Form 2 3/8" HEF
Stator Specifications
Overall Length 2946.4 mm
Tube OD 120.65 mm
Contour Length 2540.0 mm
Tube ID 95.25 mm
Rubber Cut-back
Side 1: 203.2 mm
Side 2: 203.2 mm
Weight 107 kg
Material Alloy Steel
Performance Specifications
Flow Range 379-1041 LPM
Rev per Unit Volume 0.13 Rev/L
Speed Range 49-136 RPM
No Load Pressure Loss 779 kPa
  POB PRR
Max Rec Press 3,600 kPa 3,600 kPa
Torque @ Max Press 3,770 N-m 3,770 N-m
Stall Pressure 5,390 kPa 5,390 kPa
Stall Torque 5,650 N-m 5,650 N-m
Stator Minors and Fit (mm) at 21°C
  PRR POB
Group Minor Fit Minor Fit
0 66.17 0.06 66.22 0.01
7 67.31 -1.08 67.28 -1.05
Reline Lengths (mm) Max 2946 Min 2794 Alternate Stator OD (mm): 127.0 / -
Torque
Differential Pressure (kPa) 0 2,000 4,000 Torque (Nm) 0
Fit Increase
Change in Temperature (°C) 0 100 200 Fit Increase (mm) 0
Speed
Differential Pressure (kPa) 0 2,000 4,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (kPa) 0 2,000 4,000 Mechanical Power (Kw) 0
Torque
Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 Torque (Nm) 0 1,000 2,000 3,000 4,000
Fit Increase
Change in Temperature (°C) 0 50 100 150 200 Fit Increase (mm) 0 1 2 3
Speed
379 LPM 710 LPM 1041 LPM Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 Speed (RPM) 0 50 100 150
Mechanical Power
379 LPM 710 LPM 1041 LPM Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 Mechanical Power (Kw) 0 10 20 30 40 50
©2026 NOV. All rights reserved. Except as noted, all trademarks referenced in this document are trademarks of NOV. Performance curves describe theoretical performance with 175°F (79°C) water and are for reference only. Operational fit and drilling conditions will affect performance. Operation above maximum recommended limits will reduce life. Specification data are subject to change without notice.
PS App v.