Reading a wood cutting blade specification

In summary, the grinder spacer flange nut with a 16 mm center diameter is not safe to use with a 20 mm blade. The spacer is used to center the saw blade on the spindle while the flange nut is being tightened. The flange nut must be big enough to retain the 20 mm blade. The blade also has a 72 teeth per inch total and a diameter of 4 inches. It is made of HSS (High Speed Steel) material and is designed to be used with a grinder, but it is not recommended to use handheld grinders without a guard. It is important to carefully consider the blade specifications, including the number of teeth, shape, and application, before use.
  • #1
abdulbadii
43
1
TL;DR Summary
How to read and understand a wood cutting blade specification
How do we read and understand a wood cutting blade specification (e.g. below) ?
Is the grinder spacer flange nut for 16 mm center diameter metal cutting disc can safely be used for 20 mm one of such blade?
main-qimg-21e08f906878a5ef464abfbb23d23111-lq.jpg
 
Engineering news on Phys.org
  • #2
abdulbadii said:
Is the grinder spacer flange nut for 16 mm center diameter metal cutting disc can safely be used for 20 mm one of such blade?
The spacer is NOT used with a 20 mm spindle.
The spacer is used when the spindle is 16 mm.
The spacer is used to center the saw blade on the spindle while the flange nut is being tightened. The flange nut must be big enough to retain the 20 mm blade.
 
  • Like
Likes berkeman
  • #3
72T = 72 Teeth per inch total around the blade
4" = Diameter in inches
1.1mm = not sure on this, either blade thickness OR kerf width (width of the cut)
20mm = bore (central hole) diameter

HSS = blade material, High Speed Steel
 
Last edited:
  • Like
Likes Lnewqban
  • #4
abdulbadii said:
...grinder ... cutting disc can safely be used
I cannot really add anything about the original question, but ... well, these kind of saw blades just cannot be used safely on a (handheld) grinder.

Especially in the frequently used configuration, without the guard.
 
  • Like
  • Wow
Likes DaveE, abdulbadii, berkeman and 1 other person
  • #5
Tom.G said:
72T = 72 Teeth per inch
Think more carefully about this.
 
  • Like
Likes Tom.G and berkeman
  • #6
Rive said:
I cannot really add anything about the original question, but ... well, these kind of saw blades just cannot be used safely on a (handheld) grinder.
Wait, what?

abdulbadii said:
Is the grinder spacer flange nut for 16 mm center diameter metal cutting disc can safely be used for 20 mm one of such blade?
What in the world are you trying to do?
 
  • #7
berkeman said:
Wait, what?
link (sorry, members only - but the excerpt and the picture tells everything you need to know).

There are ways to (safely) use grinders with saw blades, but I think it's better to have a warning here.
 
  • Wow
Likes berkeman
  • #8
Rive said:
link (sorry, members only - but the excerpt and the picture tells everything you need to know).
Holy Crap! Here, hold my beer for a minute...
 
  • #9
Battlebots?
 
  • #10
Tom.G said:
72T = 72 Teeth per inch

Averagesupernova said:
Think more carefully about this.
Oops! You're right. That is a TOTAL of 72 Teeth around the blade.
Corrected.

Thanks for the catch!
 
  • Like
Likes berkeman and Averagesupernova
  • #11

Similar threads

  • Mechanical Engineering
Replies
7
Views
1K
  • Biology and Medical
2
Replies
46
Views
5K
Replies
6
Views
800
  • Mechanical Engineering
Replies
13
Views
1K
  • Mechanical Engineering
Replies
18
Views
1K
  • Mechanical Engineering
Replies
1
Views
1K
Replies
1
Views
1K
  • Mechanical Engineering
Replies
5
Views
1K
  • Atomic and Condensed Matter
Replies
10
Views
2K
Replies
11
Views
1K
Back
Top