Bearings for archery bows and related apparatuses
A bearing for an archery bow having an inner race and an outer race. The inner and outer races can define two or more raceways at least partially retaining respective sets of balls. In some examples, the bearing can be disposed within a cam or eccentric of the archery bow. In some examples, two or more bearings can be disposed within the cam. Each respective inner race of the two or more bearings can contact one another to form a continuous load path in some examples.
1 . A cam assembly for an archery bow, comprising:
a cam defining a bore spanning a width of the cam;
an axle; and
a bearing rotatable about the axle, the bearing comprising:
an inner race spanning an entirety of the width, the inner race defining a continuous load path across the width;
an outer race defining a first raceway and a second raceway discrete from the first raceway;
a first set of balls disposed within the first raceway and between the inner race and the outer race; and
a second set of balls disposed within the second raceway and between the inner race and the outer race.
2 . The cam assembly of claim 1 , wherein:
the outer race has a first width;
the inner race has a second width; and
the second width is greater than the first width.
3 . The cam assembly of claim 1 , wherein:
the first set of balls engage the first raceway to provide a first thrust resistance;
the second set of balls engage the second raceway to provide a second thrust resistance; and
the bearing has a total thrust resistance greater than the first thrust resistance or the second thrust resistance.
4 . The cam assembly of claim 1 , wherein:
the first set of balls engage the first raceway to provide a first radial load threshold;
the second set of balls engage the second raceway to provide a second radial load threshold; and
the bearing has a total radial load threshold greater than the first radial load threshold or the second radial load threshold.
5 . The cam assembly of claim 1 , further comprising:
a first spacer disposed on the axle and adjacent the inner race;
a second spacer disposed on the axle and adjacent the inner race, wherein the first spacer, the second spacer, and the inner race form the continuous load path.
6 . A cam assembly for an archery bow, comprising:
a cam defining a bore spanning a width of the cam;
an axle at least partially disposed within the bore; and
a set of bearings at least partially disposed within the bore and rotatable about the axle, the set of bearings comprising:
a first bearing including a first raceway and a first set of balls disposed within the first raceway, the first bearing including a first inner race at least partially defining the first raceway;
a second bearing including a second raceway and a second set of balls disposed within the second raceway, the second bearing including a second inner race at least partially defining the second raceway; and
a third bearing including a third raceway and a third set of balls disposed within the third raceway, the third bearing including a third inner race at least partially defining the third raceway,
wherein;
the first inner race contacts the second inner race and the second inner race contacts the third inner race; and
the first inner race, the second inner race, and the third inner race span an entirety of the width to form a continuous load path.
7 . The cam assembly of claim 6 , further comprising:
a first spacer disposed on the axle and adjacent the first inner race;
a second spacer disposed on the axle and adjacent the third inner race, wherein the first spacer, the second spacer, the first inner race, the second inner race, and the third inner race form the continuous load path.
8 . The cam assembly of claim 6 , wherein:
the first bearing includes a first outer race;
the first outer race has a first width;
the first inner race has a second width greater than the first width.
9 . The cam assembly of claim 8 , wherein:
the second bearing includes a second outer race;
the second outer race has a third width;
the second inner race has a fourth width greater than the third width.
10 . The cam assembly of claim 6 , wherein the set of bearings further comprises a fourth bearing including a fourth raceway and a fourth set of balls disposed within the fourth raceway, the fourth bearing including a fourth inner race at least partially defining the fourth raceway,
wherein:
the third inner race contacts the fourth inner race, and
the first inner race, the second inner race, the third inner race, and the fourth inner race span an entirety of the width to form the continuous load path.
11 . A bearing for an archery bow, comprising:
an inner race defining a first raceway and a second raceway discrete from the first raceway;
an outer race rotatable about an axis of rotation;
a first set of balls disposed within the first raceway and between the inner race and the outer race, the first set of balls arranged on a first axis extending non-perpendicular to the axis of rotation; and
a second set of balls disposed within the second raceway and between the inner race and the outer race, the second set of balls arranged on a second axis extending non-perpendicular to the axis of rotation wherein the bearing is configured to be disposed within a bore of a cam or a roller wheel of an archery bow, and the inner race spanning an entirety of a width of the bore to define a continuous load path across the width.
12 . The bearing of claim 11 , wherein:
the outer race has a first width; and
the inner race has a second width greater than the first width.
13 . The bearing of claim 11 , wherein the first set of balls and the second set of balls are arranged in an O arrangement.
14 . The bearing of claim 11 , wherein the first set of balls and the second set of balls are arranged in an X arrangement.
15 . The bearing of claim 11 , wherein the first set of balls and the second set of balls are arranged in a tandem arrangement.