Power Section Specification
338-5630
3.375" 5:6 Lobes 3.0 Stages
Rotor Specifications
Overall Length 100.50 in
Avg. Diameter 1.862 in
Contour Length 94.00 in
Eccentricity 0.154 in
Major Diameter 2.171 in
Head Diameter 2.250 in
Head Length 6.50 in
Weight 81 lb
Thread Form 0.75-10 UNC
Stator Specifications
Overall Length 105.00 in
Tube OD 3.38 in
Contour Length 93.00 in
Tube ID 2.750 in
Rubber Cut-back
Side 1: 6.00 in
Side 2: 6.00 in
Weight 99 lb
Material Alloy Steel
Performance Specifications
Flow Range 126-260 GPM
Rev per Unit Volume 1.60 Rev/Gal
Speed Range 202-417 RPM
No Load Pressure Loss 174 psi
  POB
Max Rec Press 660 psi
Torque @ Max Press 1,140 ft-lbs
Stall Pressure 990 psi
Stall Torque 1,710 ft-lbs
Stator Minors and Fit (in) at 70°F
  POB
Group Minor Fit
0 1.868 -0.006
4 1.885 -0.023
Reline Lengths (in) Max 105 Min 99 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
Speed
126 GPM 193 GPM 260 GPM Differential Pressure (psi) 0 100 200 300 400 500 600 700 Speed (RPM) 0 100 200 300 400 500
Mechanical Power
126 GPM 193 GPM 260 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.