Power Section Specification
338-4530
3.375" 4:5 Lobes 3.0 Stages
Rotor Specifications
Overall Length 111.50 in
Avg. Diameter 1.770 in
Contour Length 105.00 in
Eccentricity 0.177 in
Major Diameter 2.123 in
Head Diameter 2.250 in
Head Length 6.50 in
Weight 80 lb
Thread Form 0.75-10 UNC
Stator Specifications
Overall Length 116.00 in
Tube OD 3.38 in
Contour Length 104.00 in
Tube ID 2.750 in
Rubber Cut-back
Side 1: 6.00 in
Side 2: 6.00 in
Weight 109 lb
Material Alloy Steel
Performance Specifications
Flow Range 126-294 GPM
Rev per Unit Volume 1.61 Rev/Gal
Speed Range 202-471 RPM
No Load Pressure Loss 168 psi
  POB
Max Rec Press 640 psi
Torque @ Max Press 1,120 ft-lbs
Stall Pressure 960 psi
Stall Torque 1,680 ft-lbs
Stator Minors and Fit (in) at 70°F
  POB
Group Minor Fit
0 1.772 -0.002
4 1.794 -0.024
Reline Lengths (in) Max 116 Min 110 Alternate Stator OD (in): - / -
Torque
Differential Pressure (psi) 0 500 Torque (ft-lb) 0
Fit Increase
Change in Temperature (°F) 0 100 200 300 Fit Increase (in) 0
Speed
Differential Pressure (psi) 0 500 Speed (RPM) 0
Mechanical Power
Differential Pressure (psi) 0 500 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 100 200 300 400 500 600 700 Torque (ft-lb) 0 500 1,000 1,500 2,000
Fit Increase
Change in Temperature (°F) 0 50 100 150 200 250 300 350 Fit Increase (in) 0 0.02 0.04 0.06 0.08
Speed
126 GPM 210 GPM 294 GPM Differential Pressure (psi) 0 100 200 300 400 500 600 700 Speed (RPM) 0 100 200 300 400 500
Mechanical Power
126 GPM 210 GPM 294 GPM Differential Pressure (psi) 0 200 400 600 800 Mechanical Power (hp) 0 50 100
©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.