R&D Research Areas

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Continuous focus on new product development and research

As a specialized manufacturer of ball screws used in various types of machine tools and industrial machinery, we are committed to meeting the diverse needs of our customers. We continuously invest in research and development for new product innovations, ensuring high load-bearing capacity, low noise, and the timely release of advanced products.

R&D activities

01 Modeling
02 Analysis
Positioning Accuracy Test / Noise Test / Thermal Deflection Test / Repetition Test
03 Test Evaluation
Comprehensive Testing Equipment

New Product Development

Low Noise High-Speed Ball Screw
Features
Improved ball circulation structure for low noise and excellent sound quality (structural measures for shock absorption)
Noise reduction through changes in component materials (low impact noise specifications)
Improved accuracy of thread trajectory shape (enhanced trajectory shape and surface roughness)
Structure
  • Circulation in the tangential direction
  • Circulation in the lead angle direction
Performance
  • Comparison of noise levels between the existing product and the new product
  • FFT frequency analysis (vibration)
  • FFT frequency analysis (amplitude of sound intensity)
Development of High Load BallScrew for Injection Molding Machines
Features
Optimal design for high load and long service life, achieving 2-3 times the rated lifespan compared to conventional designs (considering ball retainer, ball contact angle, curvature radius, and number of windings)
Design of the ball circulation components for high-speed operation and high load capacity
Application of a lubricative retainer to eliminate ball-to-ball contact, resulting in low friction and low torque (eliminating the need for long-term lubrication)
Structure
Recommended Installation
Performance
Item General High Load
Material SHAFT SCM445H (High-Frequency Heat Treatment) SCM440H (High-Frequency Heat Treatment)
NUT SCM420H SCM420H
Contact Angle 45 ˚ 50 ˚
BALL SIZE 3.175 ~ 9.525 12.7 / 15.875 / 19.05
Curvature Ratio 55% 52%
TUBE(Circulation Components) TUBE YOKE&TUBE , Injection Tube
Development of Cooling Ball Screw
Features
Incorporation of a cooling circulation channel in the shaft and nut to introduce a coolant and manage temperature
Suppression of temperature rise for improved performance during high-speed rotation
Minimization of thermal displacement in the Ball Screw to increase durability and lifespan
Structure
Cooling Test for the Ball Screw
  • Test Conditions
    Spec YEF4010-R670-C3-1091
    Shaft Diameter ø 40
    Lead 10
    Torque 3.5~4 kgf·cm
    Effective Number of Turns 5
    Maximum Speed 30m/min
    Weight 150kg
Development of Roller Screw for Construction Machinery

R&D activities and achievements

Year Research activities and development achievements
2022
 Development of Roller Screw for Construction Machinery
2021
 Development of Ball Screw for Small Modular Reactors (SMR) and Thermal Power Plants
2020
 Development of 120mm Artillery Ball Screw
2019
 Development of Measurement Equipment for Noise and Vibration in Machine Tools with Ball Screws
2018
 Development of Hollow Type Cooling Ball Screw for Shaft and Nut
Development of High Load Ball Screw for Injection Tube Parts
2017
 Development of High-End Ball Screw for Machine Tools
2016
 Development of Compact Ball Screw for Semiconductor/Robot Applications
2015
 Development of High Load Durability Testing Machine
Development of High Vibration Seal
2014
 Introduction of Shaft Wrapping Device
2012
 Development of Ball Screw for Cheonmu Ammunition Loading and Transfer
2011
 Development of High Load Ball Screw for Injection Molding Machines
2010
 Development of Ball Screw for Electric Vehicle Steering and Braking Systems
Development of Ball Screw for Directional Adjustment of Grenades
2008
 Development of High Load Retainer Type Ball Screw
2006
 Development of EndCap Internal Circulation Ball Screw
2005
 Development of Ball Screw for K10 Ammunition Loading

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