The basic load rating of a ball bearing is

the radial load at which $$90$$% of the group of apparently identical bearings run for one million revolutions before the first evidence of failure.

the maximum static radial load that can be applied without causing any plastic deformation of bearing components

the radial load at which $$90$$% of the group of apparently identical bearings run for one million revolutions before the first evidence of failure.

the maximum radial load that can be applied during operation without any plastic deformation of bearing components

a combination of radial and axial loads that can be applied without any plastic deformation

GATE 1998 Mechanical Engineering PYQ — Machine Design

GATE 19981998PYQMCQanswer keyexplanation sooneasy

Machine Design · Bearings

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Recurring concept

Bearings has appeared in GATE Mechanical Engineering 20 times across 16 years (2011, 2014, 2016, 2024, 2025, ...).