Power Section Specification (Metric)
287-5647
73 mm 5:6 Lobes 4.7 Stages
Rotor Specifications
Overall Length 2371.9 mm
Avg. Diameter 41.58 mm
Contour Length 2209.8 mm
Eccentricity 3.45 mm
Major Diameter 48.49 mm
Head Diameter 48.01 mm
Head Length 162.1 mm
Weight 26 kg
Thread Form 0.75-10 UNC
Stator Specifications
Overall Length 2682.9 mm
Tube OD 73.02 mm
Contour Length 2178.0 mm
Tube ID 60.32 mm
Rubber Cut-back
Side 1: 98.6 mm
Side 2: 406.4 mm
Weight 31 kg
Material Alloy Steel
Performance Specifications
Flow Range 189-636 LPM
Rev per Unit Volume 0.94 Rev/L
Speed Range 178-598 RPM
No Load Pressure Loss 752 kPa
  XTH RTP
Max Rec Press 7,860 kPa 7,140 kPa
Torque @ Max Press 1,200 N-m 1,090 N-m
Stall Pressure 11,790 kPa 10,720 kPa
Stall Torque 1,800 N-m 1,630 N-m
Stator Minors and Fit (mm) at 21°C
  RTP XTH
Group Minor Fit Minor Fit
0 41.53 0.05 41.53 0.05
4 41.96 -0.38 41.96 -0.38
7 42.34 -0.76 42.39 -0.81
Reline Lengths (mm) Max 2683 Min 2530 Alternate Stator OD (mm): - / -
Torque
Differential Pressure (kPa) 0 5,000 10,000 Torque (Nm) 0
Fit Increase
Change in Temperature (°C) 0 100 200 Fit Increase (mm) 0
Speed
Differential Pressure (kPa) 0 5,000 10,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (kPa) 0 10,000 Mechanical Power (Kw) 0
Torque
Differential Pressure (kPa) 0 2,000 4,000 6,000 8,000 10,000 Torque (Nm) 0 500 1,000 1,500 2,000
Fit Increase
Change in Temperature (°C) 0 50 100 150 200 Fit Increase (mm) 0 0.5 1
Speed
189 LPM 413 LPM 636 LPM Differential Pressure (kPa) 0 2,000 4,000 6,000 8,000 10,000 Speed (RPM) 0 200 400 600
Mechanical Power
189 LPM 413 LPM 636 LPM Differential Pressure (kPa) 0 5,000 10,000 Mechanical Power (Kw) 0 20 40 60 80
©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.