Bearing knowledge-JAPAN KONKEN SEIKO CO.,LTD

Home
About

Company Profile

Corporate philosophy

Our Advantages

Global Strategy
Products

Deep groove ball bearings

Single Row Deep Groove Ball Bearings

Single Row Deep Groove Ball Bearings
Detail

Single Row Deep Groove Ball Bearings 10-160 mm

Single Row Deep Groove Ball Bearings 170-240 mm

Single Row Deep Groove Ball Bearings 260-800 mm

Special Single Row Deep Groove Ball Bearings 100-1100 mm

Full Ball Bearings

Full Ball Bearings
Detail

Full Ball Type Ball Bearing 25-110mm

Magnetoelectric Machine Ball Bearings

Magnetoelectric Machine Ball Bearings
Detail

Magnetic Motor Type Ball Bearings 4-20 mm

Miniature and Small Ball Bearings

Metric Series

Metric Series
Detail

Metric Series Internal Diameter 1-4 mm

Metric Series Internal Diameter 5-9 mm

Metric Series with Stop Flange, Internal Diameter 1-4 mm

Metric Series with Stop Flange, Internal Diameter 5-9 mm

Imperial Series

Imperial Series
Detail

Imperial Series Internal Diameter 1.016-9.525 mm

Imperial Series with Stop Flange, Internal Diameter 1.191-9.525 mm

Special Purpose Ball Bearings

Special Purpose Ball Bearings
Detail

Special Purpose Ball Bearings - TM Ball Bearings Inner Diameter 17-70 mm

Special Purpose Ball Bearings for Gyroscopes, Internal Diameter 1.016-9.525 mm

Angular Contact Ball Bearings

Single Row · Paired Tandem Angular Contact Ball Bearings

Single Row · Paired Tandem Angular Contact Ball Bearings
Detail

Single Row, Paired Double-Row Bearings Inner Diameter 10~220 mm

Single Row, Paired Double-Row Bearings Inner Diameter 220~775 mm

Special Paired Double-Row Angular Contact Ball Bearings Inner Diameter 120~580 mm

Paired Tandem Angular Contact Ball Bearings

Paired Tandem Angular Contact Ball Bearings
Detail

Double-Row Angular Contact Ball Bearings, Internal Diameter 10~85mm

Double-Row Angular Contact Ball Bearings with Seals and Dust Covers, 10~55 mm

Special Double-Row Angular Contact Ball Bearings, Internal Diameter 100~280 mm

Four-Point Contact Ball Bearings

Four-Point Contact Ball Bearings
Detail

Four-Point Angular Contact Ball Bearings, Internal Diameter 30~200 mm

Self-Aligning Ball Bearings

Self-Aligning Ball Bearings

Self-Aligning Ball Bearings
Detail

Cylindrical Roller Bearings

Single Row Cylindrical Roller Bearings (Standard Series)

Single Row Cylindrical Roller Bearings (Standard Series)
Detail

Single Row Cylindrical Roller Bearings (Standard Series), Shaft Diameter 20-480 mm

Single Row Cylindrical Roller Bearings (Standard Series), Shaft Diameter 500-1320 mm

Single Row Cylindrical Roller Bearings (L-shaped Retainer)

Single Row Cylindrical Roller Bearings (L-shaped Retainer)
Detail

Single Row Cylindrical Roller Bearings (L-shaped Retainer), Internal Diameter 20-320 mm

Single Row Cylindrical Roller Bearings (New Standard EM Series)

Single Row Cylindrical Roller Bearings (New Standard EM Series)
Detail

Single Row Cylindrical Roller Bearings (New Standard EM Series), Internal Diameter 20-200 mm

Single Row Cylindrical Roller Bearings (New Standard EW Series), Internal Diameter 25-65 mm

Double Row Cylindrical Roller Bearings

Double Row Cylindrical Roller Bearings
Detail

Double Row Cylindrical Roller Bearings (Standard Series), Internal Diameter 25-850 mm

Precision Single Row Cylindrical Roller Bearings

Precision Single Row Cylindrical Roller Bearings
Detail

Precision Single Row Cylindrical Roller Bearings (Standard Series), Internal Diameter 30-140mm

Precision Single Row Cylindrical Roller Bearings (ROBUST 10 Series), Internal Diameter 45-85 mm

Precision Single Row Cylindrical Roller Bearings (ROBUST 10 Series), Internal Diameter 45-85 mm

Precision Double Row Cylindrical Roller Bearings

Precision Double Row Cylindrical Roller Bearings
Detail

Precision Double Row Cylindrical Roller Bearings (High Rigidity 30 Series), Internal Diameter 25-200mm

Precision Double Row Cylindrical Roller Bearings (High Rigidity 39 Series), Internal Diameter 100-280 mm

Precision Double Row Cylindrical Roller Bearings (High Rigidity 49 Series), Internal Diameter 100-200 mm

Precision Double Row Cylindrical Roller Bearings (Low Heat 30 Series), Internal Diameter 30-120 mm

Four-Row Cylindrical Roller Bearings

Four-Row Cylindrical Roller Bearings
Detail

Four-Row Cylindrical Roller Bearings RV Type Inner Diameter 100-1348.95 mm

Four-Row Cylindrical Roller Bearings RVK Type Inner Diameter 110.417~633.333 mm

Cylindrical Roller Bearings with Self-Aligning Rings

Cylindrical Roller Bearings with Self-Aligning Rings
Detail

Cylindrical Roller Bearings with Self-Aligning Rings (Cage Type) Inner Diameter 90~240 mm

Cylindrical Roller Bearings with Self-Aligning Rings (Full Complement Type) Inner Diameter 50~240 mm

Full Complement Cylindrical Roller Bearings

Full Complement Cylindrical Roller Bearings
Detail

Full Complement Cylindrical Roller Bearings NCF Type Inner Diameter 100-800 mm

Full Complement Cylindrical Roller Bearings NNCF Type Inner Diameter 100-500 mm

Special Purpose Cylindrical Roller Bearings

Special Purpose Cylindrical Roller Bearings
Detail

Sendzimir Mill Support Mixed Bearings Inner Diameter 31.75-120 mm

Pulley Use Cylindrical Roller Bearings RS-48·RS-49, RSF-48·RSF-49 Types Inner Diameter 50~560 mm

Pulley Use Cylindrical Roller Bearings RS-50 (Pre-Lubricated Type) Inner Diameter 40~400 mm

Tapered Roller Bearings

Single Row Tapered Roller Bearings

Single Row Tapered Roller Bearings
Detail

Single Row Tapered Roller Bearings (Metric Series), Internal Diameter 15-420 mm

Single Row Tapered Roller Bearings (Metric Series), Internal Diameter 425-1900 mm

Single Row Tapered Roller Bearings (Imperial Series), Internal Diameter 12.000-100.012 mm

Single Row Tapered Roller Bearings (Imperial Series), Internal Diameter 101.600-203.200 mm

Single Row Tapered Roller Bearings (Imperial Series), Internal Diameter 204.788-1270.000 mm

Double Row Tapered Roller Bearings

Double Row Tapered Roller Bearings
Detail

Double-Row Outward-Facing Tapered Roller Bearings KBE (TDO) Type, Internal Diameter 40-240mm

Double-Row Outward-Facing Tapered Roller Bearings KBE (TDO) Type, Internal Diameter 241.300-2000 mm

Double-Row Outward-Facing Tapered Roller Bearings KDE (TDO) Type, Internal Diameter 100-1450 mm

Double-Row Inward-Facing Tapered Roller Bearings KF (TNA) Type, Internal Diameter 101.600-406.400 mm

Double-Row Inward-Facing Tapered Roller Bearings KH (TDI) Type, Internal Diameter 100-1290 mm

Double-Row Inward-Facing Tapered Roller Bearings (Large Cone Angle) KDH (TDI) Type, Internal Diameter 100-540 mm

Four Row Tapered Roller Bearings

Four Row Tapered Roller Bearings
Detail

Four-Row Tapered Roller Bearings KV (TQO) Type, Internal Diameter 100-1500 mm

Sealed Four-Row Tapered Roller Bearings KVE, TQO Type, Internal Diameter 101.600-825.5 mm

Spherical Roller Bearings

Spherical Roller Bearings (Standard Series)

Spherical Roller Bearings (Standard Series)
Detail

Spherical Roller Bearings (Standard Series), Internal Diameter 20-320 mm

Spherical Roller Bearings (Standard Series), Internal Diameter 320-1590 mm

Special Purpose Spherical Roller Bearings

Special Purpose Spherical Roller Bearings
Detail

Inner Ring Fracture Resistant Spherical Roller Bearings (TL Series), Internal Diameter 40-500mm

Ultra High Wear Resistant Spherical Roller Bearings (SWR Series), Internal Diameter 40-240mm

Long-Life Spherical Roller Bearings for Vibrating Machinery, Internal Diameter 40-190 mm

Self-Lubricating Bearings (Lubricated Series), Internal Diameter 35-160 mm

Thrust Ball Bearings

Single-direction Thrust Ball Bearing

Single-direction Thrust Ball Bearing
Detail

Single-direction Thrust Ball Bearing with Inner Diameter 10-360 mm

Single-direction Thrust Ball Bearing with Inner Diameter 380-630 mm

Two-Way Thrust Ball Bearings

Two-Way Thrust Ball Bearings
Detail

Two-Way Thrust Ball Bearings Inner Diameter 10-190 mm

Thrust Angular Contact Ball Bearings

Two-Way Thrust Angular Contact Ball Bearings (TAC Series) Inner Diameter 140-400 mm

Two-Way Thrust Angular Contact Ball Bearings (TAC Series) Inner Diameter 140-400 mm
Detail

High-Speed Thrust Angular Contact Ball Bearings (ROBUST Series) Inner Diameter 50-200 mm

High-Speed Thrust Angular Contact Ball Bearings (ROBUST Series) Inner Diameter 50-200 mm
Detail

Ball Screw Support Bearings

Ball Screw Support Bearings
Detail

Ball Screw Support Bearings for Machine Tools (Open Type) Inner Diameter 15-60 mm

Ball Screw Support Bearings for Machine Tools (Contact Seal Type) Inner Diameter 25-45 mm

Ball Screw Support Bearings for Electric Injection Molding Machines Inner Diameter 15-120 mm

Thrust Cylindrical Roller Bearings

Thrust Cylindrical Roller Bearings Inner Diameter 35-2030 mm

Thrust Cylindrical Roller Bearings Inner Diameter 35-2030 mm
Detail

Thrust Tapered Roller Bearings

Thrust Tapered Roller Bearings

Thrust Tapered Roller Bearings
Detail

Thrust Tapered Roller Bearings TT, TTF Type Inner Diameter 101.600-600 mm

Thrust Tapered Roller Bearings TFX Type Inner Diameter 149.225-900 mm

Thrust Tapered Roller Bearings TFV Type Inner Diameter 149.225-880 mm

Thrust Tapered Roller Bearings TFD Type Inner Diameter 120-900 mm

Double-Direction Inward Thrust Tapered Roller Bearings (for Rolling Mills) KDH (TDI) Type Inner Diameter 110-1200 mm

Thrust Spherical Roller Bearing

Thrust Spherical Roller Bearing with Inner Diameter 60-200 mm

Thrust Spherical Roller Bearing with Inner Diameter 60-200 mm
Detail

Thrust Spherical Roller Bearing with Inner Diameter 220-500 mm

Thrust Spherical Roller Bearing with Inner Diameter 220-500 mm
Detail

Thrust Spherical Roller Bearing with Inner Diameter 530-1060 mm

Thrust Spherical Roller Bearing with Inner Diameter 530-1060 mm
Detail

N Series Thin-Wall Bearings

N Series Thin-section Bearings

N Series Thin-section Bearings
Detail

Thin-section Bearing NB7 Type Metric Series with Inner Diameter 10-100 mm

Thin-section Bearing NBC Type Imperial Series with Inner Diameter 25.4-635.000 mm

Thin-section Bearing NBA Type Imperial Series with Inner Diameter 25.4-635 mm

Thin-section Bearing NBX Type Imperial Series with Inner Diameter 25.4-1016.0 mm

Sealed Thin-section Bearing NBX Type Imperial Series with Inner Diameter 101.6-304.8 mm

Needle Roller Bearings

Needle Roller and Cage Assemblies

Needle Roller and Cage Assemblies
Detail

Needle Roller and Cage Assemblies (FWF FWJ) Inner Race Diameter 5-100mm

Needle Roller and Cage Assemblies for Connecting Rods - Large End Inner Race Diameter 12-30 mm

Needle Roller and Cage Assembly for Small End of Connecting Rod, Inner Diameter 9-19 mm

Drawn Cup Needle Roller Bearing

Drawn Cup Needle Roller Bearing
Detail

Drawn Cup Needle Roller Bearing Inner Diameter 4-55 mm

Solid Needle Roller Bearing

Solid Needle Roller Bearing
Detail

Solid Needle Roller Bearing (Inch Series) RLM-LM RNA-NA Inner Diameter 8-115 mm

Solid Needle Roller Bearing (Inch Series) RNA-NA Inner Diameter 120-490 mm

Thrust Needle

Thrust Needle
Detail

Thrust Needle Roller Bearing Inner Diameter 10-100 mm

Bolt Type Needle Roller Bearing with Wheel

Bolt Type Needle Roller Bearing with Wheel
Detail

Bolt Type Needle Roller Bearing with Wheel Outer Diameter 16-90 mm

Retaining Ring Type Needle Roller Bearing with Wheel

Retaining Ring Type Needle Roller Bearing with Wheel
Detail

Retaining Ring Type Needle Roller Bearing with Wheel Inner Diameter 5-50 mm

Pillow Block Spherical Ball Bearings

Vertical Seat-UCP2

Vertical Seat-UCP2
Detail

Vertical Set Screw Locking Bearing with Spherical Outer Ring Centering Ball Bearing Unit UCP2, Shaft Diameter 12-90 mm

Square Seat-UCF2

Square Seat-UCF2
Detail

Set Screw Locking Bearing with Spherical Outer Ring Centering Ball Bearing UCF2, Shaft Diameter 12-90 mm

Square Seat-UCFL2

Square Seat-UCFL2
Detail

Set Screw Locking Bearing with Spherical Outer Ring Centering Ball Bearing UCFL2, Shaft Diameter 12-90 mm

Round Flanged Unit with Spigot - UCFC2

Round Flanged Unit with Spigot - UCFC2
Detail

Seat with Slider-UCT2

Seat with Slider-UCT2
Detail

Seat with Slider UCT3

Seat with Slider UCT3
Detail

Ring Seat UCC2

Ring Seat UCC2
Detail

Ring Seat-UCC3

Ring Seat-UCC3
Detail

Diamond Seat-UKFL2

Diamond Seat-UKFL2
Detail

Diamond Seat-UKFL3

Diamond Seat-UKFL3
Detail

Vertical Seat Self-Aligning Bearings

Standard Vertical Seat Self-Aligning Bearings

Standard Vertical Seat Self-Aligning Bearings
Detail

Large Vertical Seat Self-Aligning Bearings

Large Vertical Seat Self-Aligning Bearings
Detail

Dust-Proof Vertical Seat Self-Aligning Bearings

Dust-Proof Vertical Seat Self-Aligning Bearings
Detail

Different Diameter Vertical Seat Self-Aligning Bearings

Different Diameter Vertical Seat Self-Aligning Bearings
Detail

Tapered Bore Vertical Mounted Self-aligning Bearing with Shaft Diameter 25-160 mm

Tapered Bore Vertical Mounted Self-aligning Bearing with Shaft Diameter 170-320 mm

Accessories for Bearings

Locking Sleeves for Rolling Bearings

Locking Sleeves for Rolling Bearings
Detail

Bearing Locking Sleeve Shaft Diameter 17-470 mm

Withdrawal Sleeves for Rolling Bearings

Withdrawal Sleeves for Rolling Bearings
Detail

Bearing Dismounting Sleeve Shaft Diameter 35-480 mm

Nuts for Rolling Bearings

Nuts for Rolling Bearings
Detail

Bearing Nut (for Locking Sleeve and Shaft) Washer Nut AN ANL Series

Locking Sleeve and Shaft (for Locking Sleeve and Shaft) Lock Washer Nut AN ANL Series

Bearing Nut (for Dismounting Shaft) HN HNL Series

Bearing Nut (for Dismounting Sleeve and Nut Combination)

Washers and Other Accessories for Rolling Bearings

Washers and Other Accessories for Rolling Bearings
Detail

Bearing Locking Blocks AL ANL Series

Bearing Washer
Industries

Automation Assembly Line Bearings

Bearings for pulping and papermaking

Electric motor bearings

gearbox bearings

Metallurgical bearings

Textile machine bearing

Mining machinery bearing

Bearing for power generation

Wind turbine bearing

Agricultural machinery bearing

Axle bearing

Excavator bearing

Aircraft bearing

Bearing for medical equipment

Fast train bearing

Automobile bearing
Services
News

Bearing information

Bearing knowledge
Marketing

Dealer

Sale web
Contact

English

Chinese

Japanese

Check out the dealer

Single Row Deep Groove Ball Bearings

Full Ball Bearings

Magnetoelectric Machine Ball Bearings

Metric Series

Imperial Series

Special Purpose Ball Bearings

Single Row · Paired Tandem Angular Contact Ball Bearings

Paired Tandem Angular Contact Ball Bearings

Four-Point Contact Ball Bearings

Self-Aligning Ball Bearings

Single Row Cylindrical Roller Bearings (Standard Series)

Single Row Cylindrical Roller Bearings (L-shaped Retainer)

Single Row Cylindrical Roller Bearings (New Standard EM Series)

Double Row Cylindrical Roller Bearings

Precision Single Row Cylindrical Roller Bearings

Precision Double Row Cylindrical Roller Bearings

Four-Row Cylindrical Roller Bearings

Cylindrical Roller Bearings with Self-Aligning Rings

Full Complement Cylindrical Roller Bearings

Special Purpose Cylindrical Roller Bearings

Single Row Tapered Roller Bearings

Double Row Tapered Roller Bearings

Four Row Tapered Roller Bearings

Spherical Roller Bearings (Standard Series)

Special Purpose Spherical Roller Bearings

Single-direction Thrust Ball Bearing

Two-Way Thrust Ball Bearings

Two-Way Thrust Angular Contact Ball Bearings (TAC Series) Inner Diameter 140-400 mm

High-Speed Thrust Angular Contact Ball Bearings (ROBUST Series) Inner Diameter 50-200 mm

Ball Screw Support Bearings

Thrust Cylindrical Roller Bearings Inner Diameter 35-2030 mm

Thrust Tapered Roller Bearings

Thrust Spherical Roller Bearing with Inner Diameter 60-200 mm

Thrust Spherical Roller Bearing with Inner Diameter 220-500 mm

Thrust Spherical Roller Bearing with Inner Diameter 530-1060 mm

N Series Thin-section Bearings

Needle Roller and Cage Assemblies

Drawn Cup Needle Roller Bearing

Solid Needle Roller Bearing

Thrust Needle

Bolt Type Needle Roller Bearing with Wheel

Retaining Ring Type Needle Roller Bearing with Wheel

Vertical Seat-UCP2

Square Seat-UCF2

Square Seat-UCFL2

Round Flanged Unit with Spigot - UCFC2

Seat with Slider-UCT2

Seat with Slider UCT3

Ring Seat UCC2

Ring Seat-UCC3

Diamond Seat-UKFL2

Diamond Seat-UKFL3

Standard Vertical Seat Self-Aligning Bearings

Large Vertical Seat Self-Aligning Bearings

Dust-Proof Vertical Seat Self-Aligning Bearings

Different Diameter Vertical Seat Self-Aligning Bearings

Locking Sleeves for Rolling Bearings

Withdrawal Sleeves for Rolling Bearings

Nuts for Rolling Bearings

Washers and Other Accessories for Rolling Bearings

Bearing knowledge

Serve customers attentively, we walk with you

Causes and Solutions for Heat Generation in Japanese Axis Research Precision ZNY Bearings

Maintenance and Care: Extending the Service Life of Japanese Axis Research Precision ZNY Bearings

Selection Guide for Japanese Axis Research Precision ZNY Bearings

Material Selection for Bearings: Key Factors and Common Materials

The Influence of Temperature on Bearings: How to Deal With It

Bearing Installation and Removal Techniques: Ensuring Optimal Performance

Bearing Selection Guide: Understanding the Japanese Shaft Research Seiko ZNY Bearing Series

Comparative Analysis of Rolling Bearings and Sliding Bearings by Japanese Shaft Research Seiko ZNY

Online submission requirements

Looking for dealers

online customer service

About Us

Product

Industry Solutions

News

Marketing

Contact

Weekday service hotline