Notes from a Mechanical Designer - Page 2 of 42 - A site for disseminating know-how and information learned in mechanical design

: The following is a summary of ball screw materials from each manufacturer for your reference.

2024/1/20 Ball screw

Today's note is about "Ball Screw Material Summary of Each Maker". The other day, I had a chance to use Power Lock for THK's ball screw (shaft end), and at that time, I needed to check the material (strength) of the ball screw shaft.

: Anti-resonance/vibration couplings

2020/5/2 coupling

Today's note is about "anti-resonance/vibration couplings". Many of you already know about this, but I thought it was "great" again at a recent job I was involved in, so I thought I would share it with those who are suffering from resonance/vibration in equipment that handles servos, and especially those ...

: Calculation of approximate circumference of timing belt and distance between shafts

2020/7/26 timing belt

Today's note is on "Calculation of Approximate Circumference and Distance Between Shafts of Timing Belts". This is a formula that you can use when you assume the distance between shafts of a timing belt during the design process. In addition, this article is about "Calculating the approximate circumference and axial distance of a three-star belt (tie ...

: Machined parts after welding, flat machining near a wall is basically no good unless it is away from the wall.

2025/11/13 Welding

Today's note is "The basic rule of thumb is that machined parts after welding and flat machining near a wall must be away from the wall. I'm not sure if this title is appropriate and communicates well, but this is what I was inquired about by a machinist, and I told the design engineer and ...

: Thrust force table and formula for hydraulic cylinders

2020/9/9 Security

Today's memo is about "Thrust Force Table and Thrust Force Formula for Hydraulic Cylinders". Unlike air cylinders, hydraulic cylinders have a higher pressure setting in the hydraulic circuit used and have a very large thrust force. Today, we will create a table that shows the thrust of the hydraulic cylinder ...

: How to obtain CAD data for THK grease nipples

2026/1/2 LM Guide/Linear Guide /Linear Shaft, Ball screw

Today's note is about "How to get CAD data for THK grease nipples". THK Grease Nipples If you download the CAD data for the LM Guide from THK's website, the grease nipples come with ...

: Symbols "Ca" and "C0a" for load rating in THK's ball screw catalog

2024/1/20 Ball screw

Today's note is about the symbols "Ca" and "C0a" in THK's ball screw catalog. Many people are confused because the explanation of these load rating symbols are not included in the dimensional tables in the catalog, so I am writing them down here ...

: Difference between DC and AC motors. Feature Comparison

2025/8/23 Motor

Here is a note on "Differences between DC motors and AC motors. Here are some notes on "Difference between DC motors and AC motors and comparison of their features" in Types of Motors. When selecting a motor for a machine design, which motor to choose, DC or AC?.

: Ball Screw Pressurized Dynamic Torque Calculation Formula

2024/1/20 Ball screw

Today's note is on the "Feed Torque Calculation Formula for Ball Screws". In machines using ball screws, the degree of accuracy requirements differ depending on the type of machine, so some machines can use rolling ball screws, while others can use precision ball screws.

: Difference between prototype and mass production drawings

2025/8/15 Drawing/Writing

Here is a note on the difference between prototype drawings and mass production drawings, which is mentioned in the article on mechanical drawing. As you may have experienced, after submitting a new part drawing, there are several inquiries from the machin...

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