JTEKT angular contact ball bearing shown in cutaway, spherical roller bearing, and deep groove ball bearing, alongside the black and red JTEKT logo

JTEKT — Koyo Bearings, Steering Systems & Toyoda Machine Tools

About JTEKT

JTEKT Corporation is a Toyota Group manufacturer headquartered in Kariya, Aichi, Japan, formed in 2006 by the merger of Koyo Seiko (a bearing maker founded in 1921) and Toyoda Machine Works. Today JTEKT is one of the world's leading producers of ball and roller bearings, automotive steering systems, driveline components, and machine tools, with its bearings sold worldwide under the JTEKT and Koyo brands.

Niche / Flagship Products

EXSEV Special Environment Bearings

High-performance ball bearings, including ceramic and hybrid types, designed for clean-room, vacuum, high-temperature, and corrosive environments.

LFT Ultra-Low-Friction Tapered Roller Bearings

Low-torque tapered roller bearings that reduce friction losses in automotive transmissions and differentials.

Electric Power Steering (EPS) Systems

Column-, pinion-, and rack-assist steering systems, a field in which JTEKT is one of the world's largest suppliers.

Torsen Limited-Slip Differentials

Torque-sensing gear differentials that distribute drive torque for traction and handling in AWD and performance vehicles.

Toyoda Grinding Machines

Precision cylindrical, cam, and crankshaft grinders used in automotive and high-accuracy component production.

TOYOPUC Programmable Logic Controllers

Industrial PLCs for factory automation, machine control, and safety-integrated production lines.

Specialized Product Categories

Ball Bearings

Deep groove, angular contact, thrust, and self-aligning ball bearings for general industrial and high-speed precision applications.

Roller Bearings

Tapered, cylindrical, and spherical roller bearings for heavy radial, axial, and impact loads.

Needle Roller Bearings

Compact, low-section-height bearings that save weight and space in automotive and machinery designs.

Large-Size & Miniature Bearings

Bearings ranging from ultra-large units up to 7 meters outer diameter down to miniature bearings with a 1 mm bore.

Automotive Bearings & Service Parts

Wheel hub units, engine, drivetrain, and steering bearings, plus automotive oil seals for OEM and aftermarket use.

Steering Systems

Electric and hydraulic power steering systems, steering columns, and related steering components.

Driveline Components

Differentials, couplings, and propeller-shaft components for 2WD, 4WD, and AWD vehicles.

Machine Tools

Grinding machines, machining centers, and gear-cutting machines under the Toyoda brand.

Other Products & Capabilities

Oil Seals

Low-heat, long-life industrial and automotive oil seals with optimized lip designs.

Industry-Specific Bearings

Bearing solutions for semiconductor and FPD equipment, renewable energy, steel mills, railways, aerospace, and medical equipment.

Factory Automation & IoE

PLCs, HMI displays, sensors, and connected-factory solutions for smart manufacturing.

Condition Monitoring

Portable bearing-status monitoring devices for predictive maintenance.

Energy Storage Devices

Lithium-ion capacitors for high-temperature and backup-power applications.

ONI Bearings

Premium high-performance bearings for road bicycles.

Gears, Tools & Components

Gears, grinding wheels and tools, and fluid power and sealing components through JTEKT group companies.

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