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6921 Bearing 105x145x20mm
Deep groove ball bearing 6921
Deep groove ball bearing is a kind of the most common rolling bearing. The basic type of deep groove ball bearing is composed of an outer ring, a ring, a group of steel ball and a group of cage.There are single and double row of two deep groove ball bearings, deep groove ball structure is sealed and open two structure, open refers to the bearing without sealing structure,sealing type deep groove ball into the dust seal and oil seal. Dust seal cover material for steel plate stamping, plays only a simpleprevent dust from entering the bearing raceway. Oil proof typecontact type oil seal, can effectively prevent bearing grease inside the spillover.
Single row deep groove ball bearing type code 6, code named 4double deep groove ball bearing. It has the advantages of simple structure, convenient use, is most popular, the most widely usedone kind of bearing.
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