Bearings

Image	Part Number	Description / PDF	Quantity	Rfq
	87332 Makeblock	FLANGE BEARING 2267MM (PAIR)	0
	0636001662 Woodhead - Molex	BEARING SPACER	0
	0636001966 Woodhead - Molex	BEARING	0
	0636001992 Woodhead - Molex	BEARING TOP	0
	0636003332 Woodhead - Molex	BEARING SPACER	0
	0636001101 Woodhead - Molex	BEARING NUT	0
	0636002900 Woodhead - Molex	BEARING	0
	0636002052 Woodhead - Molex	BEARING SPACER	0
	1-539574-2 TE Connectivity AMP Connectors	BEARING RAM ASSEMBLY	0
	26690-4 TE Connectivity AMP Connectors	BEARING,BALL	0
	0636003333 Woodhead - Molex	BEARING SPACER	0
	0636002713 Woodhead - Molex	BEARING SPACER INNER	0
	0637003082 Woodhead - Molex	BEARING STOP	0
	0636002051 Woodhead - Molex	BEARING	0
	0636001895 Woodhead - Molex	BEARING ANGULAR	0
	0636001661 Woodhead - Molex	BEARING HOUSING	0
	5-993136-5 TE Connectivity AMP Connectors	BEARING,SLEEVE,SELF-LUBRICATING,	0
	0636001826 Woodhead - Molex	BEARING	0
	0636003334 Woodhead - Molex	BEARING SPACER	0
	0636001993 Woodhead - Molex	BEARING	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

Type	Functional Features	Application Examples
Deep Groove Ball Bearings	High-speed capability, low torque, suitable for combined radial/axial loads	Electric motors, automotive wheel hubs
Cylindrical Roller Bearings	High radial load capacity, moderate speed	Gearboxes, rolling mills
Thrust Ball Bearings	Supports pure axial loads, bidirectional movement	Automotive transmissions, crane hooks
Angular Contact Ball Bearings	Handles combined radial/axial loads, high precision	Machine tool spindles, pumps
Spherical Roller Bearings	Self-aligning, withstands misalignment and heavy loads	Mining equipment, wind turbines
Needle Roller Bearings	High load capacity in compact radial space	Automotive 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

Parameter	Description	Importance
Dynamic Load Rating (C)	Max radial load for 1 million revolutions	Determines service life under operating loads
Static Load Rating (C0)	Max load without permanent deformation	Critical for slow-speed/heavy-load applications
Speed Limit (n_lim)	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 Hardness	Surface 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

Manufacturer	Representative Product	Key Features
SKF	Explorer Series	15-30% longer service life, reduced friction
Schaeffler (FAG)	X-life Bearings	High-speed capability with optimized raceway design
NSK	Cryfre Series	Self-lubricating bearings for food processing
The Timken Company	TORRINGTON	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