... holding capability and bearing life5.seal and lubracation:Premium O-ring,optimal seal compression and curved seal structure can enhance the ... ,118mm,120mm,127mm(5”)130.1mm(5 1/8”),133.3mm(5 1/4”),139.7mm(5 1/2”),142.8mm(5 5/8”),149.2mm ... (5 7/8”)152.4mm(6”),155 ... (15”),393.7(15 1/2”),406.4(16”)444.5(17 1/2”),508(20”),558(22”),609.6(24 ...