Need help defining technical drawing tolerance

  • Thread starter Thread starter Spheric
  • Start date Start date
  • Tags Tags
    Drawing Tolerance
AI Thread Summary
The technical drawing specifies a shaft and bearing bush with a diameter of 85mm, using the H7s6 tolerance designation. H7 indicates the hole tolerance, while s6 refers to the shaft tolerance, suggesting a medium press fit. This means the nominal diameter remains the same, but the bearing will have a smaller diameter than the shaft when tolerances are applied. For precise calculations, online tables or mathematical formulas can be used to determine the exact tolerances. Understanding these tolerances is crucial for ensuring proper fit and function in mechanical assemblies.
Spheric
Messages
1
Reaction score
0
Hi there,

I have a technical drawing considering a shaft and a bearing bush (to slip on). The dawing says 85mm diameter H7s6 and I was wondering what does it mean and how can i figure out the tolerances regarding to H7s6, any mathemtical explanation or a online table to look after?

Thanks in advance.

Spheric.

P.S.> I love this page
 
Engineering news on Phys.org
Google limits and fits. Should come up with loads of tables based on different standards.

Capital letter is a hole tolerance, small letters are the shaft tolerance.

The H7s6 is the fit.

Which looks like a medium press fit iirc, which makes sense for a shaft and bearing.

Ie the nominal diameter is the same, but when tolerances are applied the bearing will have a smaller diameter than the shaft.
 

Thread 'Race car suspension Class'

Posted June 2024 - 15 years after starting this class. I have learned a whole lot. To get to the short course on making your stock car, late model, hobby stock E-mod handle, look at the index below. Read all posts on Roll Center, Jacking effect and Why does car drive straight to the wall when I gas it? Also read You really have two race cars. This will cover 90% of problems you have. Simply put, the car pushes going in and is loose coming out. You do not have enuff downforce on the right...
View full post »

Thread 'Cantilever help'

I'm trying to decide what size and type of galvanized steel I need for 2 cantilever extensions. The cantilever is 5 ft. The space between the two cantilever arms is a 17 ft Gap the center 7 ft of the 17 ft Gap we'll need to Bear approximately 17,000 lb spread evenly from the front of the cantilever to the back of the cantilever over 5 ft. I will put support beams across these cantilever arms to support the load evenly
View full post »
Thread 'What's the most likely cause for this carbon seal crack?'

Thread 'What's the most likely cause for this carbon seal crack?'

We have a molded carbon graphite seal that is used in an inline axial piston, variable displacement hydraulic pump. One of our customers reported that, when using the “A” parts in the past, they only needed to replace them due to normal wear. However, after switching to our parts, the replacement cycle seems to be much shorter due to “broken” or “cracked” failures. This issue was identified after hydraulic fluid leakage was observed. According to their records, the same problem has occurred...
View full post »

Similar threads

Technical drawing: reference dimensions
Replies
12
Views
3K
Torque Transmission - Slippage at Press Fit Connection
Replies
11
Views
18K
Need help with rail-gun ( capacitor circuitry and specification questions)
Replies
6
Views
7K
Need Help Understanding Transistor Theory: Saturation Region
Replies
5
Views
5K
Need help explaining light speed limit to younger brother
Replies
28
Views
4K
I Need To Interview a Computer Engineer for My Engineering Class
Replies
1
Views
3K
The Grand Design and other Explanations without Explanation
Replies
6
Views
4K
6 months after dropping out of college - my tips
Replies
37
Views
14K
Mathematica This Week's Finds in Mathematical Physics (Week 257)
Replies
5
Views
4K
Exhaust and engine accoustics for asthetics and performance
Replies
2
Views
7K

Hot Threads

Recent Insights

Back
Top