New Hampshire Ball Bearings, Inc. (NHBB) has developed the industry's first self-lubricating liner system to qualify for the new performance threshold of 100,000 cycles for spherical bearing life, established by industry-standard AS81820 Type 'A.' The liner utilizes PTFE to provide the long life and wear-resistant surface required by the Type ‘A’ spherical bearings.
Spherical bearings with NHBB’s liner give the performance advantage of extended life at high loads in demanding aerospace applications such as flight controls, wing surface controls, actuators, landing gear, engine pylons, and engine mounts. The newly-qualified Type ‘A’ long life bearing series are dimensionally interchangeable with the AS81820 standard-life bearing series (25,000 cycles).
For engineers designing aerospace, mechanical systems, and subsystems, bearings with this longer-life liner provide distinct advantages. While qualified to the Type ‘A’ long life requirements, the bearings’ performance meets both – the Type ‘A’ long life as well as the original, standard-life bearing requirements. NHBB’s qualified bearings offer the same wear limits as the AS81820 standard life bearings but at four times the bearing life.
For NHBB, this liner represents our ability to meet customers’ exacting specifications and anticipate their needs.