Self-Aligning Ball Bearings

Self-aligning ball bearings are compact double-row bearings with two inner-ring raceways and one spherical outer raceway. The inner assembly can tilt relative to the outer ring, accommodating moderate shaft misalignment and deflection while maintaining low-friction rotation under predominantly radial loading.

Key facts

Family: Bearings
Common types: Cylindrical bore, Tapered bore, Open bearing, Sealed bearing, Extended inner ring
Materials: Bearing steel, Sheet steel cage, Brass cage, Polyamide cage, NBR seals
Used in: Textile machinery, Agricultural shafts, Forestry conveyors, Grain equipment, Ventilation fans

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Types

Cylindrical bore
Tapered bore
Open bearing
Sealed bearing
Extended inner ring

Materials

Applications

Textile machinery
Agricultural shafts
Forestry conveyors
Grain equipment
Ventilation fans

What to send for a quote

bore, outside diameter and width
cylindrical or tapered bore
sleeve requirement
seal style
internal clearance

Questions about self-aligning ball bearings

What should I send to identify self-aligning ball bearings?

Send bore, outside diameter and width, cylindrical or tapered bore, sleeve requirement, seal style, internal clearance. State any adapter sleeve, lock nut and tapered-bore suffix rather than quoting the nominal shaft diameter alone. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select self-aligning ball bearings?

Use the self-aligning geometry where installation or shaft deflection creates angular error, then confirm load and axial location needs. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08