The difference between bearing dust covers and sealing rings
Dust cover bearings have a higher limiting speed than sealed bearings, while sealed bearings have a higher protection level than dust cover bearings. Sealed bearings have better waterproof performance and can better prevent grease leakage.
Jul 24,2024
The difference between a bearing dust cover and a seal lies in
Dust covers are suitable for high-speed bearings and effectively prevent dust and moisture from entering, but their protection against liquid water and grease is weaker.
Seals, on the other hand, are suitable for low-speed, heavy-load bearings. They have good sealing performance, can withstand greater pressure and friction, but are relatively complex to install and remove, and may generate heat and wear at high speeds.
Dust covers are non-contact and do not contact the inner ring of the bearing, while seals are contact and contact the inner ring of the bearing.
The limit speed of dust cover bearings is higher than that of seal bearings, while the protection level of seal bearings is higher than that of dust covers. Seal bearings have better waterproof performance and can better prevent grease leakage.
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