Bearing Inspection

Applicable materials: Suitable for bearing special materials such as high carbon chromium bearing steel, stainless steel, ceramics, copper alloys, engineering plastics, as well as supporting components such as retainers, sealing rings, lubricating grease, etc.

Applicable products: including deep groove ball bearings, self-aligning ball/roller bearings, cylindrical roller bearings, tapered roller bearings, needle roller bearings, angular contact ball bearings, thrust bearings, precision spindle bearings, automotive bearings, industrial heavy-duty bearings, and other types of rolling and sliding bearings.

Applicable scenarios: Used for raw material incoming inspection, finished product factory acceptance, dimensional accuracy evaluation, rotational performance verification, life reliability testing, non-destructive testing, assembly quality testing, failure analysis, and quality arbitration testing.

Dimensional accuracy testing: evaluation of inner diameter, outer diameter, width, chamfer size, assembly clearance, fit tolerance, and accuracy level (P0/P6/P5/P4/P2).
Rotation accuracy detection: radial runout, end face runout, inner/outer ring rotation accuracy, rotation flexibility, and jamming resistance detection.
Mechanical performance testing: testing of bearing material hardness, core hardness, contact fatigue strength, tensile strength, impact toughness, and wear resistance.
Internal structure inspection: evaluation of raceway curvature, consistency of rolling element dimensions, cage structure and clearance, assembly symmetry, and internal cleanliness.
Surface quality inspection: Inspection of surface roughness, surface cracks, scratches, rust, burns, bumps, and other defects on the raceway, rolling elements, and end faces.
Non destructive testing: magnetic particle inspection, penetrant inspection, ultrasonic inspection, to detect surface and internal cracks, inclusions, looseness and other defects.
Sealing and lubrication testing: testing of sealing ring sealing, dust and water resistance, grease compatibility, grease leakage, and temperature rise performance.
Life and reliability testing: rated fatigue life, accelerated life test, high-speed performance, vibration value, noise value, durability operation stability evaluation.
Metallographic and material testing: Inspection of chemical composition, microstructure, grain size, non-metallic inclusions, decarburization layer, and carburized layer of bearing steel.
Assembly and working condition testing: assessment of fitting accuracy, preload force, installation coaxiality, operating temperature, and load adaptability.