Description
Diameter (mm): 4;
Material: High carbon chromium bearing steel, steel material: SUJ-2(JISG4805);
Hardness: HRC62?o?7;
Mutual difference (micrometers): 1.4;
Surface roughness (micrometers): 0.050;
JIS grade: G28;
Diameter difference (micrometers): 0.7;
Sphericity (micrometers): 0.7;
Gauge interval (micrometers): 2.0;
Gauge S (micrometers): +12 to -12;
Compliant with RoHS Directive (corresponding to 10 substances)
