Power Section Specification
338-7830
3.375" 7:8 Lobes 3.0 Stages
Rotor Specifications
Overall Length 111.00 in
Avg. Diameter 1.744 in
Contour Length 107.00 in
Eccentricity 0.110 in
Major Diameter 1.964 in
Head Diameter 1.750 in
Head Length 4.00 in
Weight 77 lb
Thread Form 1 3/8"-6 SA
Stator Specifications
Overall Length 124.00 in
Tube OD 3.38 in
Contour Length 108.75 in
Tube ID 2.750 in
Rubber Cut-back
Side 1: 6.12 in
Side 2: 6.12 in
Weight 119 lb
Material Alloy Steel
Performance Specifications
Flow Range 60-120 GPM
Rev per Unit Volume 1.52 Rev/Gal
Speed Range 91-182 RPM
No Load Pressure Loss 113 psi
  UF100D RTP
Max Rec Press 470 psi 710 psi
Torque @ Max Press 820 ft-lbs 1,240 ft-lbs
Stall Pressure 710 psi 1,070 psi
Stall Torque 1,240 ft-lbs 1,850 ft-lbs
Stator Minors and Fit (in) at 70°F
  UF100D RTP
Group Minor Fit Minor Fit
0 1.738 0.006 1.734 0.010
7 1.776 -0.032
Reline Lengths (in) Max 124 Min 118 Alternate Stator OD (in): - / -
Torque
Differential Pressure (psi) 0 500 Torque (ft-lb) 0
Fit Increase
Change in Temperature (°F) 0 100 200 300 Fit Increase (in) 0
Speed
Differential Pressure (psi) 0 500 Speed (RPM) 0
Mechanical Power
Differential Pressure (psi) 0 500 1,000 Mechanical Power (hp) 0
Torque
Differential Pressure (psi) 0 200 400 600 800 Torque (ft-lb) 0 500 1,000 1,500 2,000
Fit Increase
Change in Temperature (°F) 0 50 100 150 200 250 300 350 Fit Increase (in) 0 0.02 0.04 0.06 0.08
Speed
60 GPM 90 GPM 120 GPM Differential Pressure (psi) 0 100 200 300 400 500 600 700 800 900 Speed (RPM) 0 50 100 150 200 250
Mechanical Power
60 GPM 90 GPM 120 GPM Differential Pressure (psi) 0 200 400 600 800 1,000 Mechanical Power (hp) 0 10 20 30 40
©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.