Bucket Teeth for Excavator J450 Forging Bucket Teeth 9w8452TL 1U3452TL

Bucket Teeth for Excavator J450 Forging Bucket Teeth 9w8452TL 1U3452TL 

How to determine if a bearing sleeve is excessively worn?

Visual inspection

Observe wear marks: Check the bearing sleeve surface for scratches, pitting, or metal flaking. Severe wear may cause uneven wall thickness (e.g., localised thinning).

Measure dimensional changes: Use a vernier caliper to measure the sleeve's inner/outer diameter. Replacement is required if measurements exceed original tolerance limits (e.g., diameter reduction exceeding 0.5mm).

Performance Testing

Vibration and Noise: Abnormal friction sounds or increased vibration during operation (e.g., heightened noise at elevated speeds) may indicate excessive clearance due to bushing wear.

Temperature Monitoring: Unusually elevated temperatures at the bushing location (exceeding ambient temperature by 10-15°C) suggests increased frictional resistance.

Professional Inspection

Lubricant Analysis: Examine metal particle content in lubricant. Excessive iron, chromium, or particles >50μm indicate severe wear.

Non-Destructive Testing: Employ ultrasonic or magnetic particle inspection for internal cracks, particularly accurate for fatigue failure assessment in metal bushings.

Comprehensive Recommendations: Immediately replace bushings if visible wear is accompanied by performance anomalies (vibration, noise, temperature rise), or if professional testing reveals lubricant contamination exceeding standards or internal defects.