Power Section Specification (Metric)
287-5670
73 mm 5:6 Lobes 7.0 Stages
Rotor Specifications
Overall Length 2797.0 mm
Avg. Diameter 35.98 mm
Contour Length 2670.0 mm
Eccentricity 3.03 mm
Major Diameter 42.04 mm
Head Diameter 42.93 mm
Head Length 127.0 mm
Weight 23 kg
Thread Form 1.150 -SPEC ACME HT
Stator Specifications
Overall Length 2971.8 mm
Tube OD 73.15 mm
Contour Length 2667.0 mm
Tube ID 60.32 mm
Rubber Cut-back
Side 1: 152.4 mm
Side 2: 152.4 mm
Weight 36 kg
Material Alloy Steel
Performance Specifications
Flow Range 227-454 LPM
Rev per Unit Volume 1.46 Rev/L
Speed Range 331-663 RPM
No Load Pressure Loss 841 kPa
  XTH RTP
Max Rec Press 11,710 kPa 10,640 kPa
Torque @ Max Press 1,150 N-m 1,040 N-m
Stall Pressure 17,560 kPa 15,960 kPa
Stall Torque 1,720 N-m 1,570 N-m
Stator Minors and Fit (mm) at 21°C
  RTP XTH
Group Minor Fit Minor Fit
0 35.74 0.24
4 36.02 -0.04
7 36.22 -0.24 36.30 -0.32
Reline Lengths (mm) Max 2972 Min 2819 Alternate Stator OD (mm): - / -
Torque
Differential Pressure (kPa) 0 10,000 Torque (Nm) 0
Fit Increase
Change in Temperature (°C) 0 100 200 Fit Increase (mm) 0
Speed
Differential Pressure (kPa) 0 10,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (kPa) 0 10,000 20,000 Mechanical Power (Kw) 0
Torque
Differential Pressure (kPa) 0 5,000 10,000 15,000 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 1.5 2
Speed
227 LPM 341 LPM 454 LPM Differential Pressure (kPa) 0 5,000 10,000 15,000 Speed (RPM) 0 200 400 600 800
Mechanical Power
227 LPM 341 LPM 454 LPM Differential Pressure (kPa) 0 5,000 10,000 15,000 20,000 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.