1. A rolling bearing comprising:
a structure of a front surface including at least a rolling contact surface,
5 the structure containing a structure having a solid solution carbon amount in a
martensitic structure after heat treatment of 0.35 mass% or more and 0.65 mass% or
less and a volume ratio of spheroidized carbides having a diameter of 200 nm or more
of 4.5% or less.
10 2. The rolling bearing according to claim 1, wherein Si, Mn, Cr, Mo, N,
Ni, V, and Cu forming solid solutions in a total proportion of 1.0 mass% or more in
the martensitic structure.
3. The rolling bearing according to claim 2, wherein the solid solution
15 carbon amount is 0.40 mass% or more and 0.60 mass% or less, and a solid solution Cr
amount is 2.40 mass% or more and 2.95 mass% or less.
4. The rolling bearing according to claim 3, wherein the front surface
including at least the rolling contact surface has hardness of 640 HV or more.
20
5. The rolling bearing according to any one of claim 1 to 4, wherein the
heat treatment is any of quenching treatment, carburizing treatment, carbonitriding
treatment, and induction hardening treatment.