Bearings

Image Part Number Description / PDF Quantity Rfq
981261-4

981261-4

TE Connectivity AMP Connectors

BEARING,ROLLER,HEAVY DUTY

0

R12-2RS

R12-2RS

Mechatronics Bearing Group

BALL BEARING 0.75X1.625X0.4375

123

GEZ38ES-2RS

GEZ38ES-2RS

Mechatronics Bearing Group

BEARING DUTY SEALED 1.5X2X1.125"

195

R8-2RS-XE

R8-2RS-XE

Mechatronics Bearing Group

BALL BEARING 0.5X0.125X0.3125"

0

23524-1

23524-1

TE Connectivity AMP Connectors

BEARING,BALL

0

26406-6

26406-6

TE Connectivity AMP Connectors

BEARING,THRUST

0

0637000508

0637000508

Woodhead - Molex

BEARING

0

0636000277

0636000277

Woodhead - Molex

BEARING

0

16NU20

16NU20

Mechatronics Bearing Group

BEARING 1"ID1.125"OD1.25"W PTFE

200

08DU08

08DU08

Mechatronics Bearing Group

BEARING0.5"ID0.5938"OD0.5"W PTFE

133

GEZ25ES

GEZ25ES

Mechatronics Bearing Group

BEARING DUTY OPEN 1X1.625X0.875"

192

1302261651

1302261651

Woodhead - Molex

BEARING; RI50

0

R14-2RS

R14-2RS

Mechatronics Bearing Group

R SERIES BEARING 0.875X1.875X.5

219

0637000592

0637000592

Woodhead - Molex

BEARING

0

0690187081

0690187081

Woodhead - Molex

BEARING

10

0637000075

0637000075

Woodhead - Molex

BEARING 637000075

0

87370

87370

Makeblock

V-SLOT BEARING 4PC

0

87301

87301

Makeblock

FEMALE ROD END BEARING 3PC

0

87334

87334

Makeblock

F688ZZ 8X16X5 FLANGE BEARING 4PC

0

87302

87302

Makeblock

MALE ROD END BEARING 4MM 3PC

0

Bearings

1. Overview

Bearings are mechanical components designed to reduce friction between moving parts while supporting radial and axial loads. They enable smooth rotational or linear movement in machinery, playing a critical role in modern engineering systems. By converting sliding friction into rolling friction, bearings improve efficiency, durability, and energy consumption across industries such as automotive, aerospace, and industrial manufacturing.

2. Major Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Deep Groove Ball BearingsHigh-speed capability, low torque, suitable for combined radial/axial loadsElectric motors, automotive wheel hubs
Cylindrical Roller BearingsHigh radial load capacity, moderate speedGearboxes, rolling mills
Thrust Ball BearingsSupports pure axial loads, bidirectional movementAutomotive transmissions, crane hooks
Angular Contact Ball BearingsHandles combined radial/axial loads, high precisionMachine tool spindles, pumps
Spherical Roller BearingsSelf-aligning, withstands misalignment and heavy loadsMining equipment, wind turbines
Needle Roller BearingsHigh load capacity in compact radial spaceAutomotive engines, compressors

3. Structure and Components

Typical bearing structures include: - Inner/Outer Rings: Hardened steel rings with precision-ground raceways - Rolling Elements: Balls or rollers made from chrome steel, ceramic, or stainless steel - Cage: Separator maintaining element spacing (brass, steel, or polymer) - Seals/Shields: Prevent contamination ingress and lubricant leakage - Lubrication: Oil or grease filling for friction reduction

4. Key Technical Specifications

ParameterDescriptionImportance
Dynamic Load Rating (C)Max radial load for 1 million revolutionsDetermines service life under operating loads
Static Load Rating (C0)Max load without permanent deformationCritical for slow-speed/heavy-load applications
Speed Limit (nlim)Max rotational speed (RPM)Dictates suitability for high-speed machinery
Precision Class (ABEC)Tolerance levels (e.g., P0, P6, P4)Affects vibration/noise in precision equipment
Material HardnessSurface hardness (HRC 58-64 typical)Impacts wear resistance and fatigue life

5. Application Fields

  • Transportation: Automotive wheel bearings, railway axles
  • Industrial Machinery: Electric motors, pumps, compressors
  • Energy: Wind turbine generators, hydroelectric turbines
  • Aerospace: Jet engine support bearings
  • Consumer Goods: Hard drives, skateboards

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
SKFExplorer Series15-30% longer service life, reduced friction
Schaeffler (FAG)X-life BearingsHigh-speed capability with optimized raceway design
NSKCryfre SeriesSelf-lubricating bearings for food processing
The Timken CompanyTORRINGTON Tapered roller bearings for heavy-duty applications

7. Selection Recommendations

Key considerations: - Load type (radial/axial/combined) and magnitude - Operating speed vs. lubrication requirements - Environmental factors (temperature, corrosion) - Space constraints for dimensional selection - Precision requirements for ABEC class - Total Cost of Ownership (TCO) including maintenance

8. Industry Trends

Current trends include: - Development of hybrid ceramic bearings for high-speed/low-lubrication environments - Integration of condition monitoring sensors in "smart bearings" - Adoption of bio-based lubricants for sustainability - Additive manufacturing for customized bearing geometries - Digital twin technology for predictive maintenance

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