Power Section Specification
800-4553
8" 4:5 Lobes 5.3 Stages
Rotor Specifications
Overall Length 221.00 in
Avg. Diameter 4.109 in
Contour Length 214.00 in
Eccentricity 0.415 in
Major Diameter 4.940 in
Head Diameter 4.750 in
Head Length 7.00 in
Weight 864 lb
Thread Form 3 1/2" API IF
Stator Specifications
Overall Length 228.00 in
Tube OD 8.00 in
Contour Length 212.00 in
Tube ID 6.250 in
Rubber Cut-back
Side 1: 8.00 in
Side 2: 8.00 in
Weight 1366 lb
Material Alloy Steel
Performance Specifications
Flow Range 300-900 GPM
Rev per Unit Volume 0.25 Rev/Gal
Speed Range 75-225 RPM
No Load Pressure Loss 133 psi
  POB XTH PRR
Max Rec Press 1,120 psi 1,240 psi 1,120 psi
Torque @ Max Press 12,720 ft-lbs 14,000 ft-lbs 12,720 ft-lbs
Stall Pressure 1,690 psi 1,860 psi 1,690 psi
Stall Torque 19,090 ft-lbs 21,000 ft-lbs 19,090 ft-lbs
Stator Minors and Fit (in) at 70°F
  PRR POB XTH
Group Minor Fit Minor Fit Minor Fit
0 4.088 0.021 4.090 0.019
7 4.174 -0.065 4.175 -0.066 4.175 -0.066
Reline Lengths (in) Max 228 Min 222 Alternate Stator OD (in): 7.750 / 8.250
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 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 600 GPM 900 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 1,200 1,400 Speed (RPM) 0 100 200 300
Mechanical Power
300 GPM 600 GPM 900 GPM Differential Pressure (psi) 0 500 1,000 1,500 Mechanical Power (hp) 0 200 400 600
©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.