Let the front spindle rotate in the upright while carrying radial and axial wheel loads.
An SKF 61908-2RZ deep groove ball bearing with a non-contact seal. Two per corner, spaced to react the moment from the tire's offset from the bearing centreline.
Bore increased from 35 mm to 40 mm on CR26I to accommodate larger wheel loads, which forced a larger upright housing. Non-contact seals chosen to reduce drag.
Selection criteria: required bore diameter to fit over other components, bearing spacing and its impact on loads counteracting moments, static load rating greater than the worst case seen, dynamic load rating appropriate for average load and expected lifetime, and the lightest and smallest option that meets those. SKF rates bearing life at 1,000,000 cycles at basic dynamic load rating, assuming constant load magnitude and direction.
Purchased.
SKF 61908-2RZ, 40 mm bore, non-contact seal.
None recorded. This part has no entry in Knowledge_Transfer/Issue Logging/Fault Vault.xlsx, in either Issue Log.xlsx, in CR22/Issue Tracking/Shakedown 7-15-23.xlsx, or in any design review issue list found in CrimsonStorage or Box.
Weighed mass: 73.0 g (0.161 lb). Source: Subteam weight books: CR25/Suspension/Validation/Component Weight.xlsx Quantity per car, as costed: 4
Nothing in CrimsonStorage covers these yet.