When factors such as cost, availability, corrosion resistance,tighter tolerances, torque, seal/shield options, and temperature resistance are important in your application, it pays to consider BB Series four-point contact metric ball bearings as an alternative to cross-roller bearings. The additional design flexibility they offer can often help you achieve your design objectives with optimum performance and economy.Additional features not commonly available in standard crossroller bearings include a protective package for corrosion resistance, custom sealing for extreme environments,application-specific lubrication and temperature capability.