Power Section Specification
675-4570
6.75" 4:5 Lobes 7.0 Stages
Rotor Specifications
Overall Length 202.50 in
Avg. Diameter 3.512 in
Contour Length 195.50 in
Eccentricity 0.354 in
Major Diameter 4.220 in
Head Diameter 4.000 in
Head Length 7.00 in
Weight 566 lb
Thread Form 2 7/8" API Reg
Stator Specifications
Overall Length 214.60 in
Tube OD 6.75 in
Contour Length 195.00 in
Tube ID 5.500 in
Rubber Cut-back
Side 1: 7.50 in
Side 2: 7.50 in
Weight 813 lb
Material Alloy Steel
Performance Specifications
Flow Range 300-600 GPM
Rev per Unit Volume 0.50 Rev/Gal
Speed Range 150-300 RPM
No Load Pressure Loss 120 psi
  POB XTH PRR
Max Rec Press 1,490 psi 1,630 psi 1,490 psi
Torque @ Max Press 8,430 ft-lbs 9,280 ft-lbs 8,430 ft-lbs
Stall Pressure 2,230 psi 2,450 psi 2,230 psi
Stall Torque 12,650 ft-lbs 13,920 ft-lbs 12,650 ft-lbs
Stator Minors and Fit (in) at 70°F
  PRR POB XTH
Group Minor Fit Minor Fit Minor Fit
T 3.482 0.030 3.488 0.024
0 3.515 -0.003 3.514 -0.002 3.514 -0.002
2 3.527 -0.015 3.530 -0.018
4 3.551 -0.039 3.549 -0.037
Reline Lengths (in) Max 215 Min 209 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 1,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (psi) 0 1,000 2,000 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 500 1,000 1,500 Torque (ft-lb) 0 2,000 4,000 6,000 8,000 10,000
Fit Increase
Change in Temperature (°F) 0 50 100 150 200 250 300 350 Fit Increase (in) 0 0.5 1 1.5 2
Speed
300 GPM 450 GPM 600 GPM Differential Pressure (psi) 0 500 1,000 1,500 Speed (RPM) 0 100 200 300
Mechanical Power
300 GPM 450 GPM 600 GPM Differential Pressure (psi) 0 500 1,000 1,500 2,000 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.