Track roller bearing W RM 1.Material:GCr15,100Cr6,52100 2.Retainer:nylon,steel cage 3.Reliable quality 4.Various structure Track roller bearing W RMDescription:Refined bearing steelPrecision gradeCompetitive price W type guide roller Bearing No. Dimension (mm) MassIXINEUROdDBA1A2rs(g)W1RM1 ZZ4.76319.567.877.9311.860.312W1XRM1 2RS4.76319.567.877.9311.860.312W2RM2 ZZ9.52530.7311.112.718.240. ...