Needle roller bearings (needle bearing) with cylindrical roller bearings, relative to its diameter, roller is fine and long. This is called needle roller. Although with a smaller cross-section bearing still had high load bearing capacity, needle roller bearing with thin and long roller (roller diameter D is less than or equal to 5mm, L / D is greater than or equal to 2.5, l is the length of the roller), so the radial structure is compact, the diameter size and load capacity and other types of bearings are the same, minimum diameter, especially on the …More>>
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