Power Section Specification (Metric)
338-4530
85.78 mm 4:5 Lobes 3.0 Stages
Rotor Specifications
Overall Length 2832.1 mm
Avg. Diameter 44.96 mm
Contour Length 2667.0 mm
Eccentricity 4.48 mm
Major Diameter 53.92 mm
Head Diameter 57.15 mm
Head Length 165.1 mm
Weight 36 kg
Thread Form 0.75-10 UNC
Stator Specifications
Overall Length 2946.4 mm
Tube OD 85.72 mm
Contour Length 2641.6 mm
Tube ID 69.85 mm
Rubber Cut-back
Side 1: 152.4 mm
Side 2: 152.4 mm
Weight 49 kg
Material Alloy Steel
Performance Specifications
Flow Range 477-1113 LPM
Rev per Unit Volume 0.42 Rev/L
Speed Range 202-471 RPM
No Load Pressure Loss 1158 kPa
  POB
Max Rec Press 4,390 kPa
Torque @ Max Press 1,520 N-m
Stall Pressure 6,580 kPa
Stall Torque 2,270 N-m
Stator Minors and Fit (mm) at 21°C
  POB
Group Minor Fit
0 45.01 -0.05
4 45.57 -0.61
Reline Lengths (mm) Max 2946 Min 2794 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 795 LPM 1113 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 795 LPM 1113 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.