STS considerations part 1
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The document discusses lubrication issues with a container crane's drum pedestal bearing. The bearing was found to be the wrong type without lubrication grooves or holes, preventing proper greasing. A new bearing of the correct type with lubrication features was installed, and the housing was reassembled and lubricated. The conclusion emphasizes the importance of proper bearing selection, lubrication access, and preventative maintenance to avoid potential failures.
STS considerations part 1
- 1. Lubrication of container crane`s rolling elements consider one of the most important issue of the crane preventive maintenance program. Bearing and housing details: bearing type Background: the crane contents of spherical roller bearing, bearing number mechanical mechanism responsible of 22226 C/W33, bearing dimension is moving trolley frame. 130x230x64. Bearing housing as shown in This mechanism is A.C motor, reducer, wire Fig.03 rope drum, and drum pedestal bearing.Fig.01 1 4 3 Fig.03 2 Bearing and bearing housing drawing Fig.01 Checking and finding: after dismantle the 1. Motor 2.Reducer 3.Drum top cover of the housing, we found the 4. Drum pedestal bearing bearing without outer groove and also without greasing holes. Problem: drum pedestal bearing not accept The bearing number 22226 C/W33, and grease, the bearing should be lubricate W33 it mean that; the bearing with a from top of its housing.Fig02 lubrication groove and “3” lubrication holes at the outer ring, but this is not the existing condition.Fig.04 Fig.02 Fig.04 Drum pedestal bearing, greasing nipple location Bearing without lubrication groove and without lubrication holes at outer ring M. Elnagdy
- 2. Action and corrective action: Dismantle of Assembly housing and re-lubrication: old bearing, Fig.05, and install new bearing Assemblies the housing cover and lubricates With lubrication groove and lubrication the bearing. Fig07 holes at outer ring, Fig.06. New bearing 22226 E. Grease Fig.05 Fig.07 Dismantle of old bearing Lubricate new bearing Fig.06 Install new bearing, SKF 22226 E. M. Elnagdy
- 3. Conclusions: Preliminary detect of bearing greasing problem. Keeping open line and contact between greasing technicians and their supervisors. Prevent failures of bearing before happened. Awareness sessions for maintenance technicians about the relation between bearing housing and bearing type. Machinery erection technicians also should be understood the behavior and path of bearing lubrication to early detect any problems during erection stage. Preliminary mechanical designers should be aware by this example. M. Elnagdy