Power Section Specification
1125-6755
11.25" 6:7 Lobes 5.5 Stages
Rotor Specifications
Overall Length 240.00 in
Avg. Diameter 6.708 in
Contour Length 230.00 in
Eccentricity 0.487 in
Major Diameter 7.682 in
Head Diameter 6.500 in
Head Length 10.00 in
Weight 2162 lb
Thread Form 62C0013
Stator Specifications
Overall Length 250.00 in
Tube OD 11.25 in
Contour Length 229.00 in
Tube ID 9.250 in
Rubber Cut-back
Side 1: 10.50 in
Side 2: 10.50 in
Weight 2486 lb
Material Alloy Steel
Performance Specifications
Flow Range 900-1800 GPM
Rev per Unit Volume 0.09 Rev/Gal
Speed Range 81-162 RPM
No Load Pressure Loss 190 psi
  POB PRR
Max Rec Press 1,300 psi 1,260 psi
Torque @ Max Press 39,100 ft-lbs 37,860 ft-lbs
Stall Pressure 1,950 psi 1,890 psi
Stall Torque 58,630 ft-lbs 56,780 ft-lbs
Stator Minors and Fit (in) at 70°F
  PRR POB
Group Minor Fit Minor Fit
0 6.680 0.028 6.685 0.023
Reline Lengths (in) Max 250 Min 244 Alternate Stator OD (in): - / -
Torque
Differential Pressure (psi) 0 1,000 Torque (ft-lb) 0
Fit Increase
Change in Temperature (°F) 0 100 200 300 Fit Increase (in) 0
Speed
Differential Pressure (psi) 0 500 1,000 1,500 Speed (RPM) 0
Mechanical Power
Differential Pressure (psi) 0 1,000 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 500 1,000 1,500 Torque (ft-lb) 0 10,000 20,000 30,000 40,000 50,000
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
900 GPM 1350 GPM 1800 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 1,200 1,400 Speed (RPM) 0 50 100 150 200
Mechanical Power
900 GPM 1350 GPM 1800 GPM Differential Pressure (psi) 0 500 1,000 1,500 Mechanical Power (hp) 0 500 1,000
©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.