Deep groove ball bearing and differential
The present invention proposes a deep groove ball bearing, having an outer ring, an inner ring, spherical rollers located between the inner ring and outer ring, and a cage for holding the spherical rollers. In an axial direction, the inner ring has a first inner ring shoulder at a first side, and a second inner ring shoulder at a second side opposite the first side; and a first inner ring shoulder diameter of the first inner ring shoulder is configured to be larger than a second inner ring shoulder diameter of the second inner ring shoulder. The present invention further proposes a differential including the deep groove ball bearing.
1. A deep groove ball bearing, comprising:
an outer ring,
an inner ring,
spherical rollers located between the inner ring and outer ring, and
a cage for holding the spherical rollers, wherein in an axial direction, the inner ring has a first inner ring shoulder at a first side, and a second inner ring shoulder at a second side opposite the first side, and wherein a first inner ring shoulder diameter of the first inner ring shoulder is configured to be larger than a second inner ring shoulder diameter of the second inner ring shoulder,
wherein the second inner ring shoulder diameter IRSD2, an inner ring raceway groove bottom diameter IRRD of the inner ring and the diameter RBD of the spherical rollers satisfy the following relation (1):
(
IRSD
2
-
IRRD
)
R
B
D
≥
0
.
2
5
,
and
(
1
)
the first inner ring shoulder diameter IRSD1, the second inner ring shoulder diameter IRSD2 and the diameter RBD of the spherical rollers satisfy the following relation (2):
(
IRSD1
-
IRSD
2
)
R
B
D
≥
0
.
0
5
.
(
2
)
2. The deep groove ball bearing according to claim 1 , wherein a transitional part between the inner ring raceway and the first inner ring shoulder is chamfered or rounded; and/or a transitional part between the inner ring raceway and the second inner ring shoulder is chamfered or rounded.
3. The deep groove ball bearing according to claim 1 , further comprising a bearing sealing structure arranged between the outer ring and the inner ring, so that the interior of the deep groove ball bearing is sealed with respect to the outside.
4. A differential comprising:
a differential shaft, and
the deep groove ball bearing according to claim 1 , wherein the deep groove ball bearing is mounted on the differential shaft.
5. A deep groove ball bearing, comprising:
an outer ring,
an inner ring,
spherical rollers located between the inner ring and outer ring, and
a cage for holding the spherical rollers, wherein in an axial direction, the inner ring has a first inner ring shoulder at a first side, and a second inner ring shoulder at a second side opposite the first side, and wherein a first inner ring shoulder diameter of the first inner ring shoulder is configured to be larger than a second inner ring shoulder diameter of the second inner ring shoulder,
wherein the second inner ring shoulder diameter IRSD2, an inner ring raceway groove bottom diameter IRRD of the inner ring and the diameter RBD of the spherical rollers satisfy the following relation (1):
(
IRSD
2
-
IRRD
)
R
B
D
≥
0
.
2
5
,
and
(
1
)
the first inner ring shoulder diameter IRSD1, the second inner ring shoulder diameter IRSD2 and the diameter RBD of the spherical rollers satisfy the following relation (3):
(
IRSD1
-
IRSD
2
)
R
B
D
≥
0
.
1
.
(
3
)
6. A deep groove ball bearing, comprising:
an outer ring,
an inner ring,
spherical rollers located between the inner ring and outer ring, and
a cage for holding the spherical rollers, wherein in an axial direction, the inner ring has a first inner ring shoulder at a first side, and a second inner ring shoulder at a second side opposite the first side, and wherein a first inner ring shoulder diameter of the first inner ring shoulder is configured to be larger than a second inner ring shoulder diameter of the second inner ring shoulder,
wherein the second inner ring shoulder diameter IRSD2, an inner ring raceway groove bottom diameter IRRD of the inner ring and the diameter RBD of the spherical rollers satisfy the following relation (1):
(
IRSD2
-
IRRD
)
R
B
D
≥
0
.
2
5
,
and
(
1
)
the first inner ring shoulder diameter IRSD1, the second inner ring shoulder diameter IRSD2 and the diameter RBD of the spherical rollers satisfy the following relation (4):
(
IRSD1
-
IRSD
2
)
R
B
D
≥
0
.
1
2
5
.
(
4
)
7. A deep groove ball bearing, comprising:
an outer ring,
an inner ring,
spherical rollers located between the inner ring and outer ring, and
a cage for holding the spherical rollers, wherein in an axial direction, the inner ring has a first inner ring shoulder at a first side, and a second inner ring shoulder at a second side opposite the first side, and wherein a first inner ring shoulder diameter of the first inner ring shoulder is configured to be larger than a second inner ring shoulder diameter of the second inner ring shoulder,
wherein the second inner ring shoulder diameter IRSD2, an inner ring raceway groove bottom diameter IRRD of the inner ring and the diameter RBD of the spherical rollers satisfy the following relation (1):
(
IRSD2
-
IRRD
)
R
B
D
≥
0
.
2
5
,
and
(
1
)
the first inner ring shoulder diameter IRSD1, the second inner ring shoulder diameter IRSD2 and the diameter RBD of the spherical rollers satisfy the following relation (5):
(
IRSD1
-
IRSD
2
)
R
B
D
≥
0
.
1
5
.
(
5
)
8. A deep groove ball bearing, comprising:
an outer ring,
an inner ring,
spherical rollers located between the inner ring and outer ring, and
a cage for holding the spherical rollers, wherein in an axial direction, the inner ring has a first inner ring shoulder at a first side, and a second inner ring shoulder at a second side opposite the first side, and wherein a first inner ring shoulder diameter of the first inner ring shoulder is configured to be larger than a second inner ring shoulder diameter of the second inner ring shoulder,
wherein an inner ring width IRW of the inner ring in the axial direction and an outer ring width ORW of the outer ring in the axial direction satisfy the following relation:
IRW−ORW≥1 mm, or
ORW−IRW≥1 mm.
9. A deep groove ball bearing, comprising:
an outer ring,
an inner ring,
spherical rollers located between the inner ring and outer ring, and
a cage for holding the spherical rollers, wherein in an axial direction, the inner ring has a first inner ring shoulder at a first side, and a second inner ring shoulder at a second side opposite the first side, and wherein a first inner ring shoulder diameter of the first inner ring shoulder is configured to be larger than a second inner ring shoulder diameter of the second inner ring shoulder,
wherein the first inner ring shoulder has a first inner ring shoulder end face at the first side, and the second inner ring shoulder has a second inner ring shoulder end face at the second side, wherein the distance from the centre of curvature of an inner ring raceway to the first inner ring shoulder end face and the distance from the centre of curvature of the inner ring raceway to the second inner ring shoulder end face are not equal, and the larger value IRSW of the two distances and an inner ring width IRW of the inner ring in the axial direction satisfy the following relation:
IRSW/IRW≥0.51.