Bearings

Image Part Number Description / PDF Quantity Rfq
DDRI418ZZHA3P25LO1

DDRI418ZZHA3P25LO1

Mechatronics Bearing Group

SR144ZZ BEARING 1/8X1/4X7/64"

402

608-2RS-W/CHEVRONSRI2

608-2RS-W/CHEVRONSRI2

Mechatronics Bearing Group

BALL BEARING SEALED 8X22X7MM

6032

6000-2RS

6000-2RS

Mechatronics Bearing Group

BALL BEARING SEALED 10X26X8MM

0

6200-2RS

6200-2RS

Mechatronics Bearing Group

BALL BEARING SEALED 10X30X9MM

236

R6-2RS-SNB

R6-2RS-SNB

Mechatronics Bearing Group

BALL BEARING 0.375X0.875X0.2812"

599

NTA411

NTA411

Mechatronics Bearing Group

BEARING 1/4"ID 11/16"OD 5/64"W

245

R4-2RS

R4-2RS

Mechatronics Bearing Group

BALL BEARING 0.25X0.625X0.196"

0

12FNU12

12FNU12

Mechatronics Bearing Group

BUSHING 0.75"ID0.8755"OD PTFE

190

6001DDC3G81

6001DDC3G81

Mechatronics Bearing Group

BALL BEARING 12X28X8MM POLY-EM

134

SAA10XL0

SAA10XL0

Mechatronics Bearing Group

BEARINGX-TYPE1"IDX1.38"ODX0.19"W

9

6005ZZ

6005ZZ

Mechatronics Bearing Group

BALL BEARING SHIELDED 25X47X12MM

236

6204ZZ

6204ZZ

Mechatronics Bearing Group

BALL BEARING SHIELDED 20X47X14MM

83

DDRI814ZZRA3P25LY121

DDRI814ZZRA3P25LY121

Mechatronics Bearing Group

SR188ZZ BEARING 1/4X1/2X3/16"

691

6002ZZ

6002ZZ

Mechatronics Bearing Group

BALL BEARING SHIELDED 15X32X9MM

0

B36

B36

Mechatronics Bearing Group

BEARING 3/16"ID 11/32"OD 3/8"W

100

R16-2RS

R16-2RS

Mechatronics Bearing Group

BALL BEARING SEALED 1X2X0.5

108

COM8T

COM8T

Mechatronics Bearing Group

BEARING 0.5"ID 1"OD 0.5"W PTFE

979

6204-2RS-RT

6204-2RS-RT

Mechatronics Bearing Group

BALL BEARING SEALED 20X47X14MM

362

SAA15XL0

SAA15XL0

Mechatronics Bearing Group

BEARINGX-TYPE1.5"ID1.88"OD0.25"W

10

6005-2RS

6005-2RS

Mechatronics Bearing Group

BALL BEARING SEALED 25X47X12MM

270

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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