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ENGINEER.48

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Active mechanical designer / Mechanical design experience [20 years] I provide design know-how cultivated through practical experience and real information that is not found in textbooks and is useful in the field.

Summary of O-ring crushing allowance, crushing ratio, and filling ratio

Summary of O-ring crushing allowance, crushing ratio, and filling ratio

2020/9/9    

Today's note is about "O-ring crush allowance, crush rate, and fill rate summary". O-rings (JIS B 2401) are used to prevent liquids and gases from leaking out of devices, but the selection of O-rings ...

Square Pipe Standards (Size, Constant Length, Strength, Characteristics)

Summary of square pipe standards (size, standard length, strength, and characteristics)

Today's memo is about the standards (size, standard length, strength, properties) of square pipes. This covers commonly used square steel pipes for structural applications, general structural square steel pipes: STKR. Regarding the types of square pipes, for mechanical structures...

Summary of formulas and necessary information for buckling load and buckling stress

Summary of formulas and necessary information for buckling calculations (loads and stresses) [with Excel calculations].

2025/11/16    

  Today's note is about "Summary of formulas and necessary information for buckling calculations (loads and stresses)". The machines that we, mechanical designers, design are often compacted as a result, so buckling load and buckling ...

2DCAD and 3DCAD are tools for making things, so it's not a matter of being a step ahead because you are dealing with 3D.

2DCAD and 3DCAD are tools for making things, so it's not a matter of being a step ahead because you are dealing with 3D.

2024/3/28    

  Today's memo is about "2DCAD and 3DCAD, tools for making things, not about being one step ahead because you are dealing with 3D. The difference between 2DCAD and 3DCAD is a matter of who ...

Why I think you need to be more skilled than a CAD operator because you are a mechanical designer.

Why I think you need to be more skilled than a CAD operator because you are a mechanical designer.

2024/3/28    

  Today's note is about "Why I think you need to be more skilled than a CAD operator because you are a mechanical designer. I've heard a lot of us designers say that CAD is a tool, that it's separate from design.

List of pipe taper threading amount and threading dimensions1

List of pipe taper threading amount, depth, and threading dimensions

  Today's memo is about "Screw-in Amount, Depth, and Dimensions of Pipe Threads." This article is for those who want to know the screw-in amount, depth, and dimensions of pipe threads; those who want to see the thread shape and dimensions of pipe threads...

What you can do to avoid raising the machining cost of machined parts

Must Read: What You Can Do to Avoid Raising the Cost of Machining Cutting Parts

  Today's note is about "what you can do to avoid raising the cost of machining cutting parts". Today's article is primarily about machined parts.

The coefficient of transverse elasticity in spring spring constant calculations

Lateral modulus of elasticity of SWPA and SWPB in spring spring constant calculations

2025/9/25    

  Today's note is about "Lateral Modulus of Elasticity of SWPA and SWPB in spring spring constant calculation". In the calculation of compression springs, the key "modulus of transverse elasticity" is used to calculate the spring constants ...

Summary of general information to remember on photoelectric sensors

Summary of general information to remember on photoelectric sensors

2020/5/14    

Today's note is a summary of general information to remember about photoelectric sensors. Sensing is indispensable when designing machinery, but sensors have their strengths and weaknesses, and the more you know about them, the more freedom you have in your choices and how to use them.

Caps (lids) that can be used for hexagon socket head cap bolts Summary 1

Caps and lids for hexagon socket head cap bolts

2024/6/17    

  Today’s topic is "A compilation of caps for hex socket head cap screws." When designing machinery, there are environments where dust can fall onto the bolt sections. In such cases, caps for hex socket head cap screws can be used...