Power Section Specification (Metric)
338-7830
85.78 mm 7:8 Lobes 3.0 Stages
Rotor Specifications
Overall Length 2819.4 mm
Avg. Diameter 44.31 mm
Contour Length 2717.8 mm
Eccentricity 2.79 mm
Major Diameter 49.89 mm
Head Diameter 44.45 mm
Head Length 101.6 mm
Weight 35 kg
Thread Form 1 3/8"-6 SA
Stator Specifications
Overall Length 3149.6 mm
Tube OD 85.72 mm
Contour Length 2762.2 mm
Tube ID 69.85 mm
Rubber Cut-back
Side 1: 155.6 mm
Side 2: 155.6 mm
Weight 54 kg
Material Alloy Steel
Performance Specifications
Flow Range 227-454 LPM
Rev per Unit Volume 0.40 Rev/L
Speed Range 91-182 RPM
No Load Pressure Loss 779 kPa
  UF100D RTP
Max Rec Press 3,270 kPa 4,900 kPa
Torque @ Max Press 1,120 N-m 1,680 N-m
Stall Pressure 4,900 kPa 7,350 kPa
Stall Torque 1,680 N-m 2,510 N-m
Stator Minors and Fit (mm) at 21°C
  UF100D RTP
Group Minor Fit Minor Fit
0 44.15 0.17 44.04 0.27
7 45.11 -0.80
Reline Lengths (mm) Max 3150 Min 2997 Alternate Stator OD (mm): - / -
Torque
Differential Pressure (kPa) 0 5,000 Torque (Nm) 0
Fit Increase
Change in Temperature (°C) 0 100 200 Fit Increase (mm) 0
Speed
Differential Pressure (kPa) 0 2,000 4,000 6,000 Speed (RPM) 0
Mechanical Power
Differential Pressure (kPa) 0 5,000 Mechanical Power (Kw) 0
Torque
Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 5,000 6,000 Torque (Nm) 0 500 1,000 1,500 2,000 2,500
Fit Increase
Change in Temperature (°C) 0 50 100 150 200 Fit Increase (mm) 0 1 2 3
Speed
227 LPM 341 LPM 454 LPM Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 5,000 6,000 Speed (RPM) 0 50 100 150 200 250
Mechanical Power
227 LPM 341 LPM 454 LPM Differential Pressure (kPa) 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 Mechanical Power (Kw) 0 10 20 30
©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.