ERT™ Power Section Specification (Metric)
700ERTcr5682
177.8 mm 5:6 Lobes 8.2 Stages
Rotor Specifications
Overall Length 5918.2 mm
Avg. Diameter 94.02 mm
Contour Length 5740.4 mm
Eccentricity 8.50 mm
Major Diameter 111.02 mm
Head Diameter 101.60 mm
Head Length 177.8 mm
Weight 310 kg
Thread Form 2.750 NOIHT
Stator Specifications
Overall Length 6248.4 mm
Tube OD 177.80 mm
Contour Length 5689.6 mm
Tube ID 110.74 mm
Rubber Cut-back
Side 1: 279.4 mm
Side 2: 279.4 mm
Weight 578 kg
Material Alloy Steel
Performance Specifications
Flow Range 1703-2839 LPM
Rev per Unit Volume 0.11 Rev/L
Speed Range 180-300 RPM
No Load Pressure Loss 1351 kPa
  POB XTH
Max Rec Press 14,540 kPa 15,580 kPa
Torque @ Max Press 19,720 N-m 21,120 N-m
Stall Pressure 26,620 kPa 28,520 kPa
Stall Torque 36,080 N-m 38,660 N-m
Stator Minors and Fit (mm) at 21°C
  XTH POB
Group Minor Fit Minor Fit
1 94.13 -0.11 94.13 -0.11
3 94.36 -0.34
6 94.62 -0.60
 
Reline Lengths (mm) Max 6248 Min 6096
Alt. Stator OD (mm)   -   -
Alt. Rotor Diameter (mm) - - - -

Max DP for reliable operation will vary based on
operational conditions. Refer to ERT Operational
Guidelines for guidance.

Torque
Differential Pressure (kPa) 0 20,000 Torque (Nm) 0
Fit Increase
Change in Temperature (°C) 0 50 100 150 Fit Increase (mm) 0
Speed
Differential Pressure (kPa) 0 10,000 20,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (kPa) 0 20,000 Mechanical Power (Kw) 0
Torque
Differential Pressure (kPa) 0 5,000 10,000 15,000 20,000 Torque (Nm) 0 10,000 20,000 30,000
Fit Increase
Change in Temperature (°C) 0 20 40 60 80 100 120 140 160 180 Fit Increase (mm) 0 0.5 1
Speed
1703 LPM 2271 LPM 2839 LPM Differential Pressure (kPa) 0 5,000 10,000 15,000 20,000 Speed (RPM) 0 100 200 300
Mechanical Power
1703 LPM 2271 LPM 2839 LPM Differential Pressure (kPa) 0 5,000 10,000 15,000 20,000 25,000 Mechanical Power (Kw) 0 200 400 600 800
©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.