apolkhanov
Plastic
- Joined
- Oct 10, 2016
- Location
- VANCOUVER, BC, CANADA
I have, perhaps, strange question but I was unable to find an answer to it despite my pretty good Googling skills.
Air cylinder in my office chair has failed so I started looking for replacement. I have learned that original cylinder was made by company called DANT in accordance with DIN 4550 standard which is a German standard for these cylinders. Now when I looked at numerous drawings I found that top side has a taper which is 1 26''16 or 1.4377 degrees which I later found is exactly same taper angle as in Morse #3. But when I was looking for replacement cylinder I found that many specify same taper as "17/4" or "17-4". My question is WHY? What notation is 17/4? Is this even related to the size of taper? I am just really really curious where "17/4" came from?
If anyone know please share!
Air cylinder in my office chair has failed so I started looking for replacement. I have learned that original cylinder was made by company called DANT in accordance with DIN 4550 standard which is a German standard for these cylinders. Now when I looked at numerous drawings I found that top side has a taper which is 1 26''16 or 1.4377 degrees which I later found is exactly same taper angle as in Morse #3. But when I was looking for replacement cylinder I found that many specify same taper as "17/4" or "17-4". My question is WHY? What notation is 17/4? Is this even related to the size of taper? I am just really really curious where "17/4" came from?
If anyone know please share!