Machine tool spindles
High-speed precision with controlled preload.
Industrial bearings
Angular Contact Ball Bearings
Type authority for angular contact ball bearings: contact angles, paired arrangements, four-point and thin-section contexts, applications and selection.
Overview
Angular contact ball bearings have raceways offset so ball contact occurs at an angle to the radial plane, supporting combined radial and axial loads in one direction. Paired or duplex arrangements handle reversing thrust.
Single-row, double-row and four-point contact designs address different stiffness, speed and moment-load requirements in machine tools, pumps, compressors and precision drives.
Configurations and subtypes
Single-row angular contact
One row at a contact angle; often mounted in pairs for duplex preload or back-to-back/face-to-face arrangements.
Double-row angular contact
Two rows in one assembly for higher axial stiffness and moment capacity.
Four-point contact
Split inner ring designs support axial loads in both directions with a single bearing in some arrangements.
Thin-section variants
Large diameter with narrow cross-section for space-constrained precision applications. Distinct from generic deep groove selection.
Applications
Pumps and compressors
Combined radial and thrust on impeller shafts.
Gearboxes
Helical and bevel stages with axial force components.
Electric motors (thrust end)
Axial load management on vertical or thrust-loaded shafts.
Robotics and automation
Compact paired arrangements for stiff shafts.
Aerospace and precision drives
Thin-section and high-precision variants where catalogued.
Engineering selection
Contact angle
15°, 25°, 40° or series-specific
Higher contact angle increases axial capacity at some speed trade-off.
Duplex arrangement
DB, DF, DT or universal pairs
Define mounting orientation and preload when pairs are required.
Combined load rating
Radial and axial components
Use manufacturer equivalent load methods for size selection.
Speed and precision
Tolerance class and lubrication
Precision grades and oil-air lubrication may be required at high speed.
Thin-section envelope
Large bore, narrow section
Confirm section height and stiffness separately from standard deep groove sizes.
Designation and suffixes
Bore, angle, seal, clearance
Variant suffixes encode critical selection attributes.
Brand coverage
Evidence-governed relationships and type-relevant market reference for angular contact ball bearings. Authorised pathways and market brands are presented separately.
Commonly specified market brands
Manufacturers and product brands commonly specified for this bearing type in industrial and OEM applications. Inclusion is for engineering identification and interchange reference only.
SKF
NSK
NTN
Schaeffler
FAG · INA
NACHI
These manufacturers and bearing brands are commonly specified in industrial and OEM applications. Brand inclusion on this page is for market reference and engineering identification only and does not constitute an authorised supply relationship.
Engineering context
This page is a type authority reference for the Angular Contact Ball Bearings family within Golden Bearing Company’s industrial bearings taxonomy. It supports engineering selection and enquiry intent without a published designation catalogue.
Designation-level dimensions, load ratings and speed limits will be published on individual product pages only when backed by verified manufacturer source data. Until then, request quotation support with your part number, bore size and application duty.
Have a part number or designation?
Send manufacturer part numbers, bearing designations, bore sizes or operating context for engineering identification and quotation support.
This is an identification/interchange enquiry—not a live stock lookup or availability confirmation.
Common questions
A single row supports axial load in one direction. Paired mounting balances thrust in both directions and controls shaft stiffness through preload or clearance.
A design where balls contact inner and outer rings at four points, supporting axial loads in both directions in specific arrangements. Not interchangeable with standard angular contact pairs without engineering review.
No. Thin-section bearings have a large diameter-to-section ratio for compact precision envelopes. They are selected on section properties, not as generic deep groove substitutes.