High speed electric spindleRepair is very important because the results of repairing each part directly affect the subsequent service life.

Spindle disassembly and evaluation

1. Test the resistance and grounding of the stator of the spindle motor
2. Completely disassemble the spindle and clean the disassembled parts
3. Measurement of components: a. Measure the inner diameter of the bearing
b. Accuracy of measuring the outer diameter of bearings with an external micrometer
c. Vertically measure the concentricity of the inner and outer diameters of the bearing
d. Test the concentricity of the rotor
e. Straightness of the shaft axis

4. Evaluate all spring components inside the spindle
5. Inspect and evaluate the spindle chuck

6. Surface inspection and concentricity inspection of spindle cone surface
7. Measure and inspect the spindle cone surface
8. Bearing Failure Analysis and Evaluation
9. Function of the detection sensor

Installation steps:
1. All components need to be thoroughly cleaned and corroded
2. When necessary, the installed components need to be polished
3. The stator needs to be cleaned thoroughly. If the resistance is unstable, a new stator needs to be replaced
4. During component installation, it is necessary to maintain concentricity and perpendicularity
5. Correct installation of rotor and dynamic balance correction of rotor

6. Install a new O-ring seal
7. The distance ring of the bearing needs to be installed correctly between the bearings
8. Use brand new bearings for installation, and immediately install the spindle motor after disassembling the bearings. Otherwise, over time, the bearings will be contaminated with dust, leading to the failure of the bearing grease.
9 Tool retention set
10. Cone precision polishing adjustment
11. Is there any air leakage in the air pressure detection of the cooling system
12. The spindle motor housing maintains a smooth surface
13. Overall dynamic balance correction of spindle motor