The Shop Floor

Monitor showing a surface roughness profile graph in a dimly lit machine shop

Ra vs Rz: What's the Real Difference?

What is the real difference between Ra and Rz surface roughness? While Ra (Arithmetic Mean Roughness) provides a general average, Rz (Mean Roughness Depth) captures the extreme peaks and valleys...

Ra vs Rz: What's the Real Difference?

What is the real difference between Ra and Rz surface roughness? While Ra (Arithmetic Mean Roughness) provides a general average, Rz (Mean Roughness Depth) captures the extreme peaks and valleys...