What is the difference between double-row self-aligning roller bearings with oil grooves (W33) and those without oil grooves?

2018-02-24View Original

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Dear sea friends, Happy New Year! What is the difference between double-row self-aligning roller bearings with oil grooves (W33) and those without oil grooves? Is it true that the version without oil grooves was designed to accommodate grease filling holes, and is therefore not suitable for lubrication with lubricating oil (as there is no forced oil circulation), since the lubricating oil would flow out through those holes? Is this statement correct?

Reply #22018-02-25

I think the holes are there so that grease can enter through them; as for whether they prevent oil from leaking out, I’m not sure

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What is the difference between double-row self-aligning roller bearings with oil grooves (W33) and those without oil grooves?

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