
A bearing is a machine component that enables relative motion between two parts, typically to support and reduce friction in rotating or linear movement. Bearings are essential in almost all machinery and vehicles.
Koyo is the bearing brand of JTEKT Corporation, a Japanese multinational company. Koyo is globally recognized for its high-quality, precision-engineered bearings, used across various industries.
🏷️ Types of Koyo Bearings
Koyo manufactures a full range of bearing types for diverse applications:
1. Deep Groove Ball Bearings
Most commonly used type
Designed for radial and limited axial loads
Used in: electric motors, pumps, gearboxes, household appliances
2. Angular Contact Ball Bearings
Designed to handle combined radial and axial loads
Often used in pairs or sets for precision applications
Common in: machine tool spindles, automotive hubs
3. Self-Aligning Ball Bearings
Can accommodate shaft misalignment
Ideal for applications with installation inaccuracies
Used in: textile machinery, agricultural equipment
4. Cylindrical Roller Bearings
High radial load capacity
Can accommodate limited axial loads depending on design
Applications: electric motors, pumps, gearboxes
5. Tapered Roller Bearings
Designed for combined radial and axial loads
Inner and outer ring raceways are conical
Used in: automotive wheels, gearboxes, heavy machinery
6. Spherical Roller Bearings
Self-aligning, excellent for heavy radial and axial loads
Withstands misalignment and shaft deflections
Used in: mining equipment, paper mills, industrial fans
7. Needle Roller Bearings
Small cylindrical rollers, high load-carrying capacity
Compact design
Ideal for: automotive transmissions, two-wheelers, power tools
8. Thrust Bearings
Support axial loads only
Available in ball or roller designs
Used in: automotive clutches, marine equipment, vertical shafts
🧰 Features of Koyo Bearings
Feature Description
High Precision Manufactured to international tolerance standards
Low Friction Minimizes energy loss and heat generation
High Load Capacity Wide range of radial and axial load handling
Durability High-quality steel and heat treatment for long service life
Corrosion Resistance Special coatings or stainless steel versions available
Pre-lubricated Options Sealed or shielded bearings come pre-greased
🔍 Bearing Code Example – Koyo Designation
Example: 6205 ZZ C3
Code Meaning
6205 Bearing series (6 = deep groove ball bearing, 205 = size)
ZZ Shield on both sides (metal shields)
C3 Internal clearance greater than normal (for thermal expansion)
🏭 Applications of Koyo Bearings
Automotive: wheel hubs, transmissions, engines
Industrial machinery: gearboxes, compressors, electric motors
Construction equipment: cranes, excavators, drilling rigs
Aerospace: actuators, gear systems
Agricultural machinery: tractors, harvesters
Home appliances: fans, washing machines, air conditioners
✅ Why Choose Koyo Bearings?
Backed by JTEKT engineering and R& D
Compliant with ISO, JIS, and DIN standards
Reliable performance in harsh environments
Available in standard and custom designs
Supported by a global supply and service network
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