1. 4 Lobe in 5 Lobe GEROTOR (GEnerated ROTOR)
Internal Gear Pump
Jordan Harris: 4M-C

2. Common Applications Pumping viscous liquids at low speeds
Mostly used as oil pump in engines
Large presence in automotive industry
Lubricates engine/transmission components
Used for heating, cooling and filtering

4. What Are the Benefits? Able to handle various flow rates
(few cc/min to 100 gal/min)
Can maintain a range of pressures
(vacuum to 3000 psi)
Simplistic efficient design
Cheap, low power consumption, less space used, flexible application, high contamination resistance, quiet

6. History of Gerotors
W. Henry Nichols: First to develop gerotor mass production in 1920’s
Small machine shop largest manufacturer of gerotors
1981: first used in an automobile (Ford Escort)
This company makes gerotors
Using powder metal (P/M) technology
From wrought steel and cast iron

7. Sources http://www.parker.com/ead/cm2.asp?cmid=8957#whyGerotor