SL series roller bearings SL0450 and SL 04 series ,the bearing with single face or double face sealing are positioning bearings of two line and full-rollers. A complete unit is directly assembled with inner ring ,roller and outer ring, The cylindrical rollers are guided by the inner retaining edge while there is a entity middle retaining edge on the outer ring .There are two circle groove on the outer surface .It is easily positioned in axilal direction with the stopping ring ,The seat width may be smaller than the width of the bearing so as to reduce the axial directional space requirement.

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