Bearings

Image Part Number Description / PDF Quantity Rfq
0011317923

0011317923

Woodhead - Molex

BEARING SPACER

0

12NU10

12NU10

Mechatronics Bearing Group

BEARING 0.75"ID0.875"OD PTFE

190

83691602

83691602

Murrplastik

KMG-F H45/13 BLACK

0

6201ZZ

6201ZZ

Mechatronics Bearing Group

BALL BEARING SHIELDED 12X32X10MM

251

83691672

83691672

Murrplastik

KMG-F H55/16 BLACK

0

83691670

83691670

Murrplastik

KMG-F H45/13 BLACK

0

1302261668

1302261668

Woodhead - Molex

BEARING; GREASED BALL

0

5.40142.1577526

5.40142.1577526

RAFI

BEARING RAIL V4 17-TLG.

0

6205ZZ

6205ZZ

Mechatronics Bearing Group

BALL BEARING SHIELDED 25X52X15MM

461

1-22025-6

1-22025-6

TE Connectivity AMP Connectors

BEARING,SLEEVE,OIL IMPREG

0

6203-2RS-GLD

6203-2RS-GLD

Mechatronics Bearing Group

BALL BEARING SEALED 17X40X12MM

2398

2-993136-9

2-993136-9

TE Connectivity AMP Connectors

BEARING,SLEEVE,SELF-LUBRICATING,

0

2-539247-4

2-539247-4

TE Connectivity AMP Connectors

BEARING HOUS. BF12

0

0637000651

0637000651

Woodhead - Molex

BEARING

0

5.40142.1557526

5.40142.1557526

RAFI

BEARING RAIL V4 15-TLG.

0

0011323375

0011323375

Woodhead - Molex

BEARING

0

0628000727

0628000727

Woodhead - Molex

BEARING BLOCK 628000727

0

0637000759

0637000759

Woodhead - Molex

BEARING CUP

0

COM10T

COM10T

Mechatronics Bearing Group

BEARING0.625"ID1.19"OD0.63"WPTFE

498

0011320884

0011320884

Woodhead - Molex

BEARING PLATE

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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