Electric motors
Bearing arrangements in motors, fans and small industrial drives where radial load is primary.
Industrial bearings
Deep Groove Ball Bearings
Type authority for deep groove ball bearings: construction, configurations, applications and engineering selection. General-purpose radial ball bearings for motors, pumps and industrial drives.
Overview
Deep groove ball bearings are radial ball bearings with deep raceway grooves in the inner and outer rings. They support radial loads as the primary duty and moderate axial loads in both directions through ball contact with the raceway surfaces.
They are the most widely used rolling bearing type in electric motors, pumps, fans, gearboxes and general industrial machinery where moderate loads and high speeds are typical. Geometry comprises an inner ring, outer ring, ball complement and cage or retainer, with point contact between balls and raceways.
Configurations and subtypes
Open bearings
No integral shield or seal on either side. Suitable where the surrounding assembly provides protection and relubrication is practical.
Shielded (Z/ZZ)
Non-contact metal shields retain grease and exclude coarse contaminants while allowing relubrication through the shield gap on some designs.
Sealed (RS/2RS)
Contact or low-friction seals enclose factory grease for cleaner environments and reduced maintenance frequency. Seal material and speed capability vary by manufacturer series.
Clearance and precision
Internal clearance classes (for example C3) and precision grades are variant attributes selected for fit, temperature rise and speed. Values are designation-specific and must come from manufacturer catalogues.
Applications
Pumps and compressors
Rotating equipment support in process and utility pumping applications.
Gearboxes and reducers
Shaft support in speed-reducing and power-transmission assemblies.
Conveyors and material handling
Roller and drive shaft support in bulk handling and logistics equipment.
Agricultural machinery
Field equipment rotating components subject to contamination and seasonal duty.
Fans and blowers
Fan shaft support where moderate loads and continuous operation are typical.
General industrial machinery
Universal rotating support across factory and MRO applications.
Engineering selection
Boundary dimensions
Bore, outside diameter and width
Start with the basic size envelope, then confirm series and variant suffixes from manufacturer designation systems.
Load and required life
Equivalent load and required service life
Define radial and axial components of duty, then select a designation that meets required life at the operating load. Use manufacturer catalogues for rating methodology.
Speed and temperature
Operating speed and temperature conditions
Confirm speed, temperature rise and lubricant suitability. High-speed or elevated-temperature duty may require specific clearance, precision or lubrication choices.
Sealing, shielding and lubrication
Contamination, lubricant retention and relubrication
Balance contamination resistance against speed and maintenance access. Open, shielded and sealed variants each suit different assembly and service practices.
Shaft and housing fit
Mounting arrangement and fit considerations
Shaft and housing fits must follow applicable engineering standards and manufacturer guidance for interference, clearance and axial location.
Designation and variant identification
Bearing series, bore designation and suffix configuration
Designation strings encode bore, series, seal, clearance and precision variants. Send manufacturer part numbers or markings for identification enquiry.
Brand coverage
Evidence-governed relationships and type-relevant market reference for deep groove 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
JTEKT
Koyo
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 Deep Groove Ball Bearing product 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 deep groove ball bearing is a radial ball bearing with raceway grooves deeper than the ball diameter, allowing it to carry radial loads and moderate axial loads in both directions. It is the most common rolling bearing type in industrial equipment.
Sealed or shielded variants suit environments where contamination control or maintenance intervals matter. Open bearings suit assemblies with external sealing and established relubrication practices. Final selection depends on speed, temperature and manufacturer guidance for the specific designation.
Boundary dimensions (bore, outside diameter, width) define the basic size. Manufacturer designation strings add series, seal, clearance and precision suffixes. Send the full part number or marking from your equipment for identification support.
Send manufacturer part numbers for engineering identification and quotation enquiry. This is an identification support pathway—not a live stock lookup and not a claim of authorised distribution for candidate market brands listed on this page.