Mitutoyo SJ-210 - Evaluating Based on JIS B0601-1994

No. 99MBB122A
18-2
18.1.2 Evaluating based on JIS B0601-1994
■ Standard cut-off values and evaluation lengths for Ra
Ra Range Cut-off value (λc) Sampling length (ℓ) Evaluation length (ℓn)
(0.006)
< Ra ≤
0.02 µm 0.08 mm 0.08 mm 0.4 mm
0.02
< Ra ≤
0.1 µm 0.25 mm 0.25 mm 1.25 mm
0.1
< Ra ≤
2.0 µm 0.8 mm 0.8 mm 4 mm
2.0
< Ra ≤
10.0 µm 2.5 mm 2.5 mm 12.5 mm
10.0
< Ra ≤
80.0 µm 8 mm 8 mm 40 mm
■ Standard cut-off values and evaluation lengths for Ry
Ry Range Cut-off value (λc) Sampling length (ℓ) Evaluation length (ℓn)
㧔0.025㧕 㧨
Ry
҇
0.10 µm 0.08 mm 0.08 mm 0.4 mm
0.10
㧨
Ry
҇
0.50 µm 0.25 mm 0.25 mm 1.25 mm
0.50
㧨
Ry
҇
10.0 µm 0.8 mm 0.8 mm 4 mm
10.0
㧨
Ry
҇
50.0 µm 2.5 mm 2.5 mm 12.5 mm
50.0
㧨
Ry
҇
200.0 µm 8 mm 8 mm 40 mm
■ Standard cut-off values and evaluation lengths for Rz
Rz range Cut-off value (λc) Sampling length (ℓ) Evaluation length (ℓn)
㧔0.025㧕 㧨
Rz
҇
0.10 µm 0.08 mm 0.08 mm 0.4 mm
0.10
㧨
Rz
҇
0.50 µm 0.25 mm 0.25 mm 1.25 mm
0.50
㧨
Rz
҇
10.0 µm 0.8 mm 0.8 mm 4 mm
10.0
㧨
Rz
҇
50.0 µm 2.5 mm 2.5 mm 12.5 mm
50.0
㧨
Rz
҇
200.0 µm 8 mm 8 mm 40 mm
■ Standard cut-off values and evaluation lengths for Sm
Sm Range Cut-off value (λc) Sampling length (ℓ) Evaluation length (ℓn)
0.013
㧨
Sm
҇
0.04 µm 0.08 mm 0.08 mm 0.4 mm
0.04
㧨
Sm
҇
0.13 µm 0.25 mm 0.25 mm 1.25 mm
0.13
㧨
Sm
҇
0.4 µm 0.8 mm 0.8 mm 4 mm
0.4
㧨
Sm
҇
1.3 µm 2.5 mm 2.5 mm 12.5 mm
1.3
㧨
Sm
҇
4.0 µm 8 mm 8 mm 40 mm