CHAIN SHEAVE USED FROM 0296 - 0799NUMBER 40 ON DIAGRAMWIDTH OUTER RING B1 (mm)36MAX INNER RING D2 (mm) 40WIDTH INNER RING B2 (mm)25OUTER DIAMETER D3 (mm) 82WIDTH OF THREAD B3 (mm) 26.7MAX OUTER DIAMETER D1 (mm) 92REF NUMBER LS1752