List of Spring products

[Reproduction Private Spring Preparatory School Lecture 20] Not only does fatigue strength decrease, but the thickness of the material and wire diameter also decrease: Gama skin, shark skin, and Zenit...

• Spring

[Reproduction of Private Spring Preparatory School Lecture 19] Notches reduce both static strength and fatigue strength! The scary part is the notches that are like bacteria, which are hard to see.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 18] Study of Fatigue Limit Estimation Method! Estimating fatigue limits from tensile strength and hardness test results.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 17] Metals also change when they are fatigued! An explanation of how the results of fatigue tests are organized and utilized in design.

• Spring

[Reprint Private Spring Preparatory School Lecture 16] What is a fatigue test? An explanation of its purposes and how it is conducted.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 15] Explanation of ductile fracture and brittle fracture! Also explains the smooth and rough surfaces of fatigue fracture.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 14] Characteristics of stress on springs! Used under significantly larger static and dynamic stresses.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 13] Explanation of the repeated bending test! It also explains the differences from the repeated bending fatigue test.

• Spring

[Reproduction Private Spring Preparatory School Lecture 12] The hardness of each railway plate spring is measured! Brinell hardness testing machines are installed simultaneously in all factories.

• Spring

[Reissue Private Spring Preparatory School Lecture 11] Explanation of single and double quenching methods! Discussion of new materials and technologies as well.

• Spring

[Reissue Private Spring Preparatory School Lecture 10] About the spring industry during the Showa period! Establishment of various standards and specifications, from JES to JIS.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 9] Explaining the transition of the automotive and aerospace industries! Also discusses war and the spring industry.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 8] Explanation of two new hardness testing machines! Inventions of Rockwell and Vickers.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 7] The Emergence of Automobile Springs, the Great Earthquake, and the Major Advancement of Automobiles! The late Taisho period was an era whe...

• Spring

[Reproduction of Private Spring Preparatory School Lecture 6] Standards and specifications for steel materials and springs have been established! The spring industry made great strides in the early Ta...

• Spring

[Reproduction of Private Spring Preparatory School Lecture 5] The rickshaw is also a benefactor for the spring industry! It also discusses the modernization of the spring industry.

• Spring

[Reproduction Private Spring Preparatory School Lecture 4] A different measurement method! Explanation of the Shore durometer applying the principle of rebound.

• Spring

[Reproduction of Private Spring Preparatory School Lecture 3] Explanation of the Brinell hardness testing machine! Hard materials are tested with a red signal, and the testing surface is generally fla...

• Spring

[Reproduction Private Spring Preparatory School Lecture 2] The national standards for power test machines, testing methods, and reference pieces are firmly established in JIS!

• Spring

[Reproduction of Private Spring Preparatory School Lecture 1] Comparing Hardness: It's About Scratching! An explanation of metal hardness and a testing machine using diamonds.

• Spring

For those who want spring design and estimation without incurring costs! Introducing custom springs.

• Spring

To continue using the same spring for a long time! We will definitely not discontinue it in the future.

• Spring

A catalog arranged in order of spring size with full-scale illustrations! It starts with the smallest size.

• Spring

Leveraging the strengths of machinery! Introducing the basic knowledge of mechanical design to realize user-friendly machines.

• Spring

We will also introduce functional features such as reduced wear and damage to the screw threads!

• Spring

Introducing a method to dramatically improve the efficiency of wire insert insertion work!

• Spring

A method to easily find the perfect spring for you! Introducing the selection method.

• Spring

For those who want stable quality springs! Consistent quality can be maintained with two-point load management.

• Spring

Introducing tangless inserts, helicoils, and actual catalogs!

• Spring

Three functions: selection, calculation, and design! This is the one for compression and tension springs.

• Spring

Ultra-fine cutting processing with a tolerance of 5μm or less. Achieving a diameter tolerance of ±5μm.

• Spring

Material thickness: t = 0.008 mm - ultra-thin punching processing. This is an example of precision punching of metal foil / processing by miniature press / processing in a quasi-clean environment.

• Spring

Foil cutting and high-precision bending processing. This is an example of foil cutting, bending, and forming processing at the contact points.

• Spring

We have a track record of same-day shipping even for custom orders! Leave prototypes, short delivery times, and small lots to us.

• Spring