Power Section Specification
350-5630
3.5" 5:6 Lobes 3.0 Stages
Rotor Specifications
Overall Length 73.75 in
Avg. Diameter 1.900 in
Contour Length 68.75 in
Eccentricity 0.138 in
Major Diameter 2.176 in
Head Diameter 2.250 in
Head Length 5.00 in
Weight 51 lb
Thread Form 0.75-10 UNC
Stator Specifications
Overall Length 79.75 in
Tube OD 3.50 in
Contour Length 67.75 in
Tube ID 2.750 in
Rubber Cut-back
Side 1: 6.00 in
Side 2: 6.00 in
Weight 91 lb
Material Alloy Steel
Performance Specifications
Flow Range 60-210 GPM
Rev per Unit Volume 2.66 Rev/Gal
Speed Range 159-559 RPM
No Load Pressure Loss 147 psi
  XTH RTP
Max Rec Press 730 psi 660 psi
Torque @ Max Press 750 ft-lbs 680 ft-lbs
Stall Pressure 1,090 psi 990 psi
Stall Torque 1,130 ft-lbs 1,030 ft-lbs
Stator Minors and Fit (in) at 70°F
  RTP XTH
Group Minor Fit Minor Fit
0 1.882 0.018 1.882 0.018
4 1.903 -0.003 1.903 -0.003
7 1.918 -0.018 1.918 -0.018
Reline Lengths (in) Max 80 Min 74 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 1,000 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 100 200 300 400 500 600 700 800 900 Torque (ft-lb) 0 200 400 600 800
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
60 GPM 135 GPM 210 GPM Differential Pressure (psi) 0 100 200 300 400 500 600 700 800 900 Speed (RPM) 0 200 400 600
Mechanical Power
60 GPM 135 GPM 210 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 Mechanical Power (hp) 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.