>> P.312
Standard mounting dimensionsmmda(1)ras maxMin.Max. Max. .5.5221212.51.52.57979798686939399dFB69.850(2 3 4)69.850(2 3 4)69.850(2 3 4) 82.550(3 1╱ 4) 82.550(3 1╱ 4) 82.550(3 1╱ 4)44.70051.05044.70077777776.200(3 )76.200(3 ) 88.900(3 1╱ 2) 88.900(3 1╱ 2)51.05051.05083.583.582.550(3 1 4)82.550(3 1 4) 95.250(3 3╱ 4) 95.250(3 3╱ 4)51.05051.050919197Mass (Ref.)Boundary dimensionsmm(inch)g530600530640640690690── LRBZ 445228 BLRB 445228LRB 445232─LRB 485632── LRBZ 485632 BLRB 526032── LRBZ 526032 BIdentification numberLRB 566432─75088.900(3 1 2)101.600(4 )51.050Shaft dia.mm(inch)69.850(23╱4)76.200(3)82.550(31╱4)88.900(31╱2)INNER RINGSInner Rings for General UsageInch SeriesShaft dia. 69.850-88.900mmNote(1) Maximum allowable llet corner radius of shaft Remark RB with inner ring bore diameter d of 76.200 mm or less and LRBZ…B are provided with an oil groove and an oil hole. Other models are provided with an oil groove and two oil holes.H31
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