Bornemann®-Compatible Screw Pump Rotors, 9.5″ – Now in Production

A new line just came off the floor this week: precision-machined screw pump rotors built as a direct aftermarket replacement for Bornemann® 9.5″ progressive cavity pump rotors. Same geometry, same mounting interface, same duty envelope — manufactured in our workshop, not on a Bornemann® assembly line. As a manufacturer known for mechanical seals for rotating equipment and OEM replacement mechanical seals, extending our workshop into OEM replacement pump parts like these rotors was a natural step — and our mechanical seal replacement parts line continues alongside it.

Screw pump rotors live in a tough service environment. Most of the time they run in thick, abrasive, or high-solids media — sludge transfer, oil sands, chemical dosing, dewatering, mud pumping — where the rotor face is taking a continuous beating from the stator lining and the process media at the same time. To hold up under that, the rotor needs three things working in parallel: a high-grade alloy body , tight concentricity on the eccentric profile, and a surface finish that doesn't tear the elastomer stator every revolution.

For users running Bornemann®-series pumps who are looking for a second source on this part, the door is open. Send us your existing rotor's part number and duty conditions, and we'll come back with a quote and a lead time.

The rotors shown here are independently manufactured by Lepu Machinery as aftermarket replacement parts, and are not original Bornemann parts. They are not affiliated with, authorized by, or distributed through Bornemann. Bornemann® is a registered trademark of its respective owner, referenced here only to indicate model compatibility.