Power Section Specification
287-5647
2.875" 5:6 Lobes 4.7 Stages
Rotor Specifications
Overall Length 93.38 in
Avg. Diameter 1.637 in
Contour Length 87.00 in
Eccentricity 0.136 in
Major Diameter 1.909 in
Head Diameter 1.890 in
Head Length 6.38 in
Weight 57 lb
Thread Form 0.75-10 UNC
Stator Specifications
Overall Length 105.62 in
Tube OD 2.88 in
Contour Length 85.75 in
Tube ID 2.375 in
Rubber Cut-back
Side 1: 3.88 in
Side 2: 16.00 in
Weight 67 lb
Material Alloy Steel
Performance Specifications
Flow Range 50-168 GPM
Rev per Unit Volume 3.56 Rev/Gal
Speed Range 178-598 RPM
No Load Pressure Loss 109 psi
  XTH RTP
Max Rec Press 1,140 psi 1,040 psi
Torque @ Max Press 880 ft-lbs 800 ft-lbs
Stall Pressure 1,710 psi 1,560 psi
Stall Torque 1,320 ft-lbs 1,200 ft-lbs
Stator Minors and Fit (in) at 70°F
  RTP XTH
Group Minor Fit Minor Fit
0 1.635 0.002 1.635 0.002
4 1.652 -0.015 1.652 -0.015
7 1.667 -0.030 1.669 -0.032
Reline Lengths (in) Max 106 Min 100 Alternate Stator OD (in): - / -
Torque
Differential Pressure (psi) 0 500 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 Speed (RPM) 0
Mechanical Power
Differential Pressure (psi) 0 1,000 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 200 400 600 800 1,000 1,200 Torque (ft-lb) 0 200 400 600 800 1,000
Fit Increase
Change in Temperature (°F) 0 50 100 150 200 250 300 350 Fit Increase (in) 0 0.01 0.02 0.03 0.04 0.05
Speed
50 GPM 109 GPM 168 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 1,200 Speed (RPM) 0 200 400 600
Mechanical Power
50 GPM 109 GPM 168 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 1,200 1,400 1,600 Mechanical Power (hp) 0 50 100
©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.