1. According to the type of rolling bearing structure classification
(1) bearing according to its can bear the load direction or nominal contact angle of the different, divided into:
1) radial bearings - mainly used to bear the radial load of the rolling bearing, the nominal contact angle from 0 to 45. According to the nominal contact angle is different, is divided into:
radial contact bearings ---- nominal contact angle of 0 to the heart
bearings: to the angular contact bearings ---- nominal contact angle
greater than 0 to 45 of the radial bearings.
2)
Thrust bearings - mainly used to bear the axial load of rolling
bearings, the nominal contact angle is greater than 45 to 90. According to the nominal contact angle is divided into: axial contact
bearings ---- nominal contact angle of 90 thrust bearings: thrust
angular contact bearings ---- nominal contact angle greater than 45 but
less than 90 thrust bearings.
(2) bearing according to the type of rolling its body, divided into:
1) ball bearing ---- rolling body for the ball:
2) Roller bearings ---- Roller for the roller. Roller
bearings by roller type, is divided into: cylindrical roller bearings
---- rolling is cylindrical roller bearings, cylindrical roller length
and diameter ratio is less than or equal to 3; needle roller bearings
---- Roller
is a needle roller bearings, needle roller length and diameter ratio
greater than 3, but the diameter is less than or equal to 5mm; tapered
roller bearings ---- rolling is a tapered roller bearings; Roller is a spherical roller bearing.
(3) bearing according to their work can be self-aligning, divided into:
1) aligning bearings ---- raceway is spherical, can adapt to the
two-axis axis between the axis of the deviation and angular movement of
the bearing;
2) non-self-aligning bearings (rigid bearings) ---- can resist the axis between the axis of the axis of the bearing offset.
(4) according to the number of rolling bearings, divided into:
1) single row bearing - with a rolling element of the bearing;
2) double row bearings - with two rolling elements of the bearing;
3) multi-row bearing ---- with more than two rolling elements of the bearings, such as three, four bearings.
(5) bearing according to its components can be separated, divided into:
1) separable bearings - bearings with separable parts;
2) can not be separated bearings ---- bearing in the final package, the rings are not free to separate the bearings.
(6) bearing according to its structural shape (if there is no trough,
with or without the outer ring and the shape of the ring, the structure
of the ribs, and even whether the cage, etc.) can also be divided into a
variety of structural types.
2. According to the size of rolling bearing size According to the size of the outer diameter of the bearing, divided into:
(1) miniature bearings - nominal diameter range of 26mm below the bearing;
(2) small bearings ---- nominal diameter range of 28-55mm bearing;
(3) small and medium bearings - nominal diameter range of 60-115mm bearing;
(4) large bearings ---- nominal diameter range of 120-190mm bearing
(5) large bearings ---- nominal diameter range of 200-430mm bearing;
(6) large bearings ---- nominal diameter range of 440mm above the bearing.
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