Seohan Group

Great Challenge & Innovation!

R&D

SEOHAN
Great Challenge & Innovation
The Seohan Engineering Research Institute is continuously researching and developing chassis parts,
the most essential component for moving cars, and drive modularizations and
eco-friendly products that will lead the future automotive industry.

Performance and History

2022
  • Received the Technology 5-Star 5★ rating (HMC)
  • Received the certification as a company specializing in materials & components
2021
  • Received the Technology 5-Star 5★ rating (HMC)
  • Received the certification as a company with Excellent job invention compensation
  • Developed Damper Fork
2020
  • Received the Technology 5-Star 5★ rating (HMC)
2017
  • Received the Technology 5-Star 5★ rating (HMC)
  • Excellent Product Development Partner Award (HMC)
  • IR52 Jang Youngsil Award (Hybrid Disc)
2016
  • Developed Aluminum Knuckle & Carrier
2013
  • Lightweight Hybrid Disc New Technology Certification (NET)
2012
  • Research institute moved (Dongtan)
  • Korea’s first LSJ that minimizes lateral vibration developed
2007
  • CJ with excellent rotational balance developed domestically
2001
  • Established Seohan Engineering Research Institute (Jincheon)

Corporate Organization

  • Research Facilities
    Office Building 3,147㎡ / Testing Center 3,150㎡ / Amenities 3,123㎡
  • Researchers
  • Research Equipment

Research & Development Areas

Driveline & Chassis
Joints for Halfshaft
Shafts for Halfshaft
Joints for Propeller shaft
Axle Ass’y
Driveline & Chassis
Joints for Halfshafts
  • High-Angle/High-Efficiency Joints

    UBJ (Undercut Free Joint)

    HBJ (High Efficiency Joint)

    Increasing outboard angle of bend → Decreasing vehicle turning radius

  • Low Vibration Joints

    LSJ (Least Shudder Joint)

    Reducing shudder (vehicle's vibration when starting to move) and idling vibration

Shafts for Halfshaft
  • Friction Welding Hollow Shafts

    WTS (Friction Welding Tubular Shaft)

    Reducing weight compared to solid shafts (30%), improving vibration noise and torsional strength

  • Integral Hollow Shafts

    MTS (Monoblock Tubular Shaft)

    Reducing weight compared to solid shafts (40%), improving vibration noise and torsional strength

Joints for Propeller Shafts
  • Cross Groove Joint

    6 Balls & 8 Balls for Propeller Shafts

    Disc, Monoblock, Flange Type

    Lowering heat generation, minimizing backlash, improving high temperature performance, and reducing weight

  • Fixed Joints

    Propeller Shaft용 6Ball & 8Ball

    Disc, Monoblock, Flange Type

    Improving assembly, improving cut-outs, improving high temperature performance, and reducing weight

Axle Assemblies
  • Hybrid Discs

    Bonding technologies for dissimilar material casting

    Type #1 (Aluminum + Cast iron)

    Type #2 (Cast iron + Cast Iron)

  • Aluminum Knuckle & Carrier

    Casting methods (high pressure, differential pressure, low pressure)

    Securing product competitiveness by diversifying manufacturing methods

  • Disc Processing and Surface Treatments

    New methods of braking surface processing

    New methods of surface treatments

  • Modularization

    Axle & Halfshaft, Axle & Brake complete, Integrated Axle

    Improving system performance

    New system structures

Achievements of Research

Industrial Property Rights
  • 94
    Patents registered in Korea
  • 10
    Patents registered internationally
  • 37
    Domestic and international applications
  • 2
    Designs