500-56-83

Power Section

Technical Specifications

Fit Information – Minor Diameter (in)
Stator Size
NBR-1A
Dyna Power
XR
HR
XP
1 Undersize
Standard
2.489
2.500
2.489
2.489*
1 Oversize
2.517
2.523
2.515
2.515*
2 Oversize
2.535
2.530
2.530*
Nominal Fit at 75oF
1 Undersize
Standard
0.013
0.002
0.013
0.013*
1 Oversize
-0.015
-0.021
-0.013
-0.013*
2 Oversize
-0.033
-0.028
-0.028*
* Pending production measurements
** Representative options given. Verify specific requirements before placing order
*** Customer specified
Rotor Specifications
Overall Length ** (in)
229.4
Contour Length ** (in)
223.4
Eccentricity (in)
0.207
Major Diameter (in)
2.916
Head Diameter *** (in)
2.750
Weight (lb)
275
Material ***
17-4SS
Thread Form ***
2 3/8 Hughes External Flush Mod Flat
Stator Specifications
Overall Length (in)
242.2
Cutback #1 (in)
8.0
Cutback #2 (in)
11.0
Tube OD (in)
5.00
Tube ID (in)
3.75
Weight (lb)
636
Number Of Stages
8.3
Performance Specifications
NBR-1A
XR
HR
XP
Torque Slope
2.576 ft-lb/psi
Max. Diff. Press. (psi)
1250
1870
1870
2080
Flow Range
100 – 300 GPM
Max. Torque (ft-lb)
3210
4810
4810
5350
RPG
1.000 rev/gal
Stall Diff. Press. (psi)
1870
2800
2800
3110
Speed Range
100 – 300 RPM
Stall Torque (ft – lb)
4810
7220
7220
8020
Off Bottom Pressure (psi)
116
Max. Recommended (HP)
161
241
241
268
PSI Per Stage
150
225
225
250
PSI Per Cavity
28
42
42
46
Temperature Slope (in/oF
0.000304
0.000225
0.000241
0.000241
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