Power Section Specification (Metric)
338-5630
85.78 mm 5:6 Lobes 3.0 Stages
Rotor Specifications
Overall Length 2552.7 mm
Avg. Diameter 47.29 mm
Contour Length 2387.6 mm
Eccentricity 3.92 mm
Major Diameter 55.14 mm
Head Diameter 57.15 mm
Head Length 165.1 mm
Weight 37 kg
Thread Form 0.75-10 UNC
Stator Specifications
Overall Length 2667.0 mm
Tube OD 85.72 mm
Contour Length 2362.2 mm
Tube ID 69.85 mm
Rubber Cut-back
Side 1: 152.4 mm
Side 2: 152.4 mm
Weight 45 kg
Material Alloy Steel
Performance Specifications
Flow Range 477-984 LPM
Rev per Unit Volume 0.42 Rev/L
Speed Range 202-417 RPM
No Load Pressure Loss 1200 kPa
  POB
Max Rec Press 4,560 kPa
Torque @ Max Press 1,540 N-m
Stall Pressure 6,840 kPa
Stall Torque 2,310 N-m
Stator Minors and Fit (mm) at 21°C
  POB
Group Minor Fit
0 47.45 -0.15
4 47.88 -0.58
Reline Lengths (mm) Max 2667 Min 2515 Alternate Stator OD (mm): - / -
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 6,000 Mechanical Power (Kw) 0
Torque
Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 5,000 Torque (Nm) 0 500 1,000 1,500 2,000 2,500
Fit Increase
Change in Temperature (°C) 0 50 100 150 200 Fit Increase (mm) 0 0.5 1 1.5
Speed
477 LPM 731 LPM 984 LPM Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 5,000 Speed (RPM) 0 100 200 300 400 500
Mechanical Power
477 LPM 731 LPM 984 LPM Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 5,000 6,000 Mechanical Power (Kw) 0 20 40 60 80
©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.