Power Section Specification (Metric)
675-7857
171.5 mm 7:8 Lobes 5.7 Stages
Rotor Specifications
Overall Length 6397.8 mm
Avg. Diameter 105.42 mm
Contour Length 6220.0 mm
Eccentricity 6.25 mm
Major Diameter 117.92 mm
Head Diameter 101.60 mm
Head Length 177.8 mm
Weight 411 kg
Thread Form 2 7/8" API Reg
Stator Specifications
Overall Length 6604.0 mm
Tube OD 171.45 mm
Contour Length 6197.6 mm
Tube ID 139.70 mm
Rubber Cut-back
Side 1: 203.2 mm
Side 2: 203.2 mm
Weight 438 kg
Material Alloy Steel
Performance Specifications
Flow Range 1136-2839 LPM
Rev per Unit Volume 0.06 Rev/L
Speed Range 69-174 RPM
No Load Pressure Loss 1138 kPa
  POB XTH
Max Rec Press 9,310 kPa 10,240 kPa
Torque @ Max Press 20,040 N-m 22,050 N-m
Stall Pressure 13,970 kPa 15,360 kPa
Stall Torque 31,010 N-m 34,110 N-m
Stator Minors and Fit (mm) at 21°C
  POB XTH
Group Minor Fit Minor Fit
0 105.05 0.37 105.05 0.37
2 105.26 0.17 105.26 0.17
4 105.59 -0.16 105.59 -0.16
5 105.74 -0.32 105.74 -0.32
Reline Lengths (mm) Max 6604 Min 6452 Alternate Stator OD (mm): 177.8 / -
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 5,000 10,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (kPa) 0 10,000 Mechanical Power (Kw) 0
Torque
Differential Pressure (kPa) 0 5,000 10,000 Torque (Nm) 0 10,000 20,000
Fit Increase
Change in Temperature (°C) 0 50 100 150 200 Fit Increase (mm) 0 0.5 1 1.5 2
Speed
1136 LPM 1987 LPM 2839 LPM Differential Pressure (kPa) 0 2,000 4,000 6,000 8,000 10,000 12,000 Speed (RPM) 0 50 100 150 200
Mechanical Power
1136 LPM 1987 LPM 2839 LPM Differential Pressure (kPa) 0 5,000 10,000 15,000 Mechanical Power (Kw) 0 100 200 300 400
©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.