Power Section Specification
675-7829
6.75" 7:8 Lobes 2.9 Stages
Rotor Specifications
Overall Length 213.50 in
Avg. Diameter 3.808 in
Contour Length 206.50 in
Eccentricity 0.244 in
Major Diameter 4.295 in
Head Diameter 4.000 in
Head Length 7.00 in
Weight 652 lb
Thread Form 2 7/8" API Reg
Stator Specifications
Overall Length 220.00 in
Tube OD 6.75 in
Contour Length 204.00 in
Tube ID 5.500 in
Rubber Cut-back
Side 1: 8.00 in
Side 2: 8.00 in
Weight 836 lb
Material Alloy Steel
Performance Specifications
Flow Range 300-650 GPM
Rev per Unit Volume 0.17 Rev/Gal
Speed Range 49-107 RPM
No Load Pressure Loss 168 psi
  POB XTH PRR
Max Rec Press 690 psi 760 psi 690 psi
Torque @ Max Press 11,040 ft-lbs 12,150 ft-lbs 11,040 ft-lbs
Stall Pressure 1,030 psi 1,130 psi 1,030 psi
Stall Torque 16,560 ft-lbs 18,220 ft-lbs 16,560 ft-lbs
Stator Minors and Fit (in) at 70°F
  PRR POB XTH
Group Minor Fit Minor Fit Minor Fit
0 3.796 0.012 3.795 0.013 3.795 0.013
1 3.805 0.003
2 3.815 -0.007 3.822 -0.014 3.822 -0.014
5 3.850 -0.042 3.848 -0.040
Reline Lengths (in) Max 220 Min 214 Alternate Stator OD (in): 6.500 / -
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) 0 200 400 600 800 Torque (ft-lb) 0 5,000 10,000 15,000
Fit Increase
Change in Temperature (°F) 0 50 100 150 200 250 300 350 Fit Increase (in) 0 0.05 0.1 0.15
Speed
300 GPM 475 GPM 650 GPM Differential Pressure (psi) 0 100 200 300 400 500 600 700 800 900 Speed (RPM) 0 50 100
Mechanical Power
300 GPM 475 GPM 650 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 Mechanical Power (hp) 0 100 200 300
©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.