Under the selected constant Coulomb-friction reference, sliding resistance is Ff = μN and mechanical power dissipated is P = Ffv. Clearance is a separate selected dimension and is not assigned a universal risk score.
Sliding Contact · Selected Coulomb Reference
Explore sliding resistance, frictional power and the clearance of a guided block.
Equation Used
- Normal load and friction coefficient are constant selected values.
- Sliding resistance follows the Coulomb magnitude μN.
- Speed input is a magnitude and friction opposes instantaneous motion.
- Lubrication, wear, thermal response, stick-slip, strength and ratings are excluded.
Clearance is selected independently of the friction coefficient; a suitable value depends on the guide and its operating conditions.
Loaded contact face and guided clearance
The visual shows a block translating on a loaded lower contact face while a selected clearance is displayed at the opposite guide face. Force arrows reverse with sliding direction; exact outputs use only selected N, μ and speed magnitude.
What the calculator determines
Select normal load, constant friction coefficient, speed magnitude and guide clearance. The calculator reports Coulomb resistance, ideal frictional power, speed in m/s and selected clearance in micrometers.
Selected constant-friction reference
Ff = μN; P = Ffv; v(m/s) = v(mm/s)/1000; c(μm) = 1000c(mm).
Selected-input arithmetic
For N = 500 N, μ = 0.05 and v = 50 mm/s, resistance is 25 N and ideal dissipation is 1.25 W.
Reference only
Real friction depends on material pair, finish, lubrication regime, temperature, contamination, pressure, speed and stick-slip. Clearance acceptability depends on guide design, size, load, thermal growth and adjustment. Wear, oil-film thickness, heat flow, stability, life and ratings are excluded.
Questions
Does selected clearance determine friction here?
No. μ is independently selected.
Is frictional power the final temperature rise?
No. Temperature requires thermal mass and heat-transfer conditions.
References & Further Reading
- Wikipedia contributors. Kinematic pair. Wikipedia
Building or designing a mechanism like this?
Explore the precision-engineered motion control hardware used by mechanical engineers, makers, and product designers.
