Power Section Specification
700-7875
7" 7:8 Lobes 7.5 Stages
Rotor Specifications
Overall Length 241.00 in
Avg. Diameter 4.090 in
Contour Length 234.00 in
Eccentricity 0.258 in
Major Diameter 4.606 in
Head Diameter 4.000 in
Head Length 7.00 in
Weight 892 lb
Thread Form 2 7/8" API Reg
Stator Specifications
Overall Length 246.00 in
Tube OD 7.00 in
Contour Length 227.50 in
Tube ID 5.750 in
Rubber Cut-back
Side 1: 9.25 in
Side 2: 9.25 in
Weight 966 lb
Material Alloy Steel
Performance Specifications
Flow Range 300-750 GPM
Rev per Unit Volume 0.31 Rev/Gal
Speed Range 92-231 RPM
No Load Pressure Loss 160 psi
  POB XTH
Max Rec Press 1,780 psi 1,960 psi
Torque @ Max Press 15,280 ft-lbs 16,810 ft-lbs
Stall Pressure 2,670 psi 2,930 psi
Stall Torque 22,920 ft-lbs 25,210 ft-lbs
Stator Minors and Fit (in) at 70°F
  POB XTH
Group Minor Fit Minor Fit
0 4.090 -0.000 4.090 -0.000
4 4.110 -0.020
7 4.160 -0.070
Reline Lengths (in) Max 246 Min 240 Alternate Stator OD (in): - / -
Torque
Differential Pressure (psi) 0 1,000 2,000 Torque (ft-lb) 0
Fit Increase
Change in Temperature (°F) 0 100 200 300 Fit Increase (in) 0
Speed
Differential Pressure (psi) 0 1,000 2,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (psi) 0 2,000 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 500 1,000 1,500 2,000 2,500 Torque (ft-lb) 0 5,000 10,000 15,000 20,000
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 0.1
Speed
300 GPM 525 GPM 750 GPM Differential Pressure (psi) 0 500 1,000 1,500 2,000 2,500 Speed (RPM) 0 100 200 300
Mechanical Power
300 GPM 525 GPM 750 GPM Differential Pressure (psi) 0 500 1,000 1,500 2,000 2,500 3,000 Mechanical Power (hp) 0 200 400 600 800
©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.