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A graphite rotor that wobbles or binds in the unit ruins gas dispersion and shortens the shaft. Rotor machining is where balance and fit are set, and both decide how the part performs. This article covers four specs that decide a machined graphite rotor.
Jiecheng Graphite (since 2003) machines graphite rotors to spec and confirms balance and fit in writing.
Four specs that decide balance and fit
Concentricity keeps the rotor true to the shaft. Balance controls vibration at speed. Surface finish sets erosion and release. And the shaft fit holds the connection without galling. Jiecheng Graphite verifies these before machining.
Concentricity — rotor true to the shaft
Balance — low vibration at speed
Finish — smooth, low erosion
Shaft fit — clean, no galling
Where machined rotors are used
Machined graphite rotors serve degassing, stirring and rotary dosing in non-ferrous foundries. Confirm the shaft, temperature and speed before ordering.
Rotary degassing and flux injection
Molten-metal stirring and dosing
High-temperature foundry duty
What to specify before you buy
Send the shaft drawing, speed and fit tolerance. Jiecheng Graphite machines rotors in its 3,000 m² Dalang plant and ships worldwide.
Spec | What to confirm | Why it matters |
Concentricity | Runout value | Keeps rotor true |
Balance | Value | Cuts vibration |
Finish | Ra value | Controls erosion |
Fit | Tolerance | Stops galling |
Buying checklist
1. Send shaft drawing and speed
2. Specify concentricity and balance
3. Confirm finish and fit tolerance
4. Agree inspection per batch
5. Freeze the rotor spec
FAQ
Why does my rotor wobble?
Concentricity or balance; confirm both values.
How is balance checked?
By a balance run on the finished rotor.
How do I stop shaft galling?
Confirm the fit tolerance and finish.
Protecting rotor performance
Rotor performance is set at machining, so confirm the values before the part ships. Jiecheng Graphite balances and fits rotors to your shaft and documents the numbers, so the rotor runs true from the first turn.
Confirm concentricity and balance
Set the shaft fit tolerance
Document inspection per rotor
A machined rotor runs true when concentricity, balance, finish and fit are confirmed. Jiecheng Graphite has machined graphite rotors since 2003 and keeps the spec on file for consistent re-orders.
