| 摘要 |
A rolling bearing has the radius of curvature of the raceway on an inner ring and an outer ring from not smaller than 50.1% to not greater than 51.9% of the diameter of the balls, and at least one of the components of the bearing is obtained by forming an alloy steel having a carbon (C) content of from not smaller than 0.50% to not greater than 0.90%, a chromium (Cr) content of from not smaller than 3.0% to not greater than 15.0%, a manganese (Mn) content of from not smaller than 0.10% to not greater than 2.0%, a silicon (Si) content of from not smaller than 0.10% to not greater than 2.0%, a molybdenum (Mo) content of zero or not greater than 2.0% by weight, and a vanadium (V) content of zero or not greater than 2.0%, by weight. Alternatively the alloy steel has a carbon (C) content from 0.10% to 0.90%, a chromium (Cr) content from 3.0% to 8.0%, a manganese (Mn) content from 0.1% to 2.0% and a silicon content from 0.10% to 1.0%, whereby the alloy steel is subjected to carburizing or carbonitriding, hardening and tempering. |
