Bearings

Image Part Number Description / PDF Quantity Rfq
83691665

83691665

Murrplastik

SET KMG-F-M50

0

28772-5

28772-5

TE Connectivity AMP Connectors

BEARING,ROD END,FEMALE

0

0011410260

0011410260

Woodhead - Molex

BEARING

0

2-539247-5

2-539247-5

TE Connectivity AMP Connectors

BEARING HOUS. BK12

0

NTA1423

NTA1423

Mechatronics Bearing Group

BEARING 7/8"ID 1-7/16"OD 5/64"W

299

28772-1

28772-1

TE Connectivity AMP Connectors

BEARING,ROD END,FEMALE

0

0637001185

0637001185

Woodhead - Molex

BEARING SEAL

0

0637000322

0637000322

Woodhead - Molex

BEARING

0

1302261632

1302261632

Woodhead - Molex

BEARING - SPRING MOTOR

0

539574-9

539574-9

TE Connectivity AMP Connectors

BEARING RAM ASSEMBLY

0

2-23217-9

2-23217-9

TE Connectivity AMP Connectors

BEARING,THRUST

0

1-2030442-8

1-2030442-8

TE Connectivity AMP Connectors

BEARING, BALL, DEEP GROOVE, SING

0

1302261644

1302261644

Woodhead - Molex

BEARING; END

0

NTA815

NTA815

Mechatronics Bearing Group

BEARING 1/2"ID 15/16"OD 5/64"W

265

26505-2

26505-2

TE Connectivity AMP Connectors

BEARING, BALL, DOUBLE SEAL

0

5.40142.1537526

5.40142.1537526

RAFI

BEARING RAIL V4 13-TLG.

0

B24

B24

Mechatronics Bearing Group

BEARING 1/8"ID 1/4"OD 1/4"W

99

0637001184

0637001184

Woodhead - Molex

BEARING SEAL

0

1-22030-1

1-22030-1

TE Connectivity AMP Connectors

BEARING,FLANGED SLE,OIL IMPREG

0

22502-6

22502-6

TE Connectivity AMP Connectors

BEARING,BALL

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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