common classification methods of rolling bearing:

1 according to the rolling bearing structure type classification

(1) according to the loading direction which can bear or nominal contact angle is different, is divided into:

1) radial bearings - important for rolling bearings bear radial load, the nominal contact angle from 0 to 45. According to nominal

The contact angle is different, can be divided into: radial bearings - Nominal

The contact angle for radial bearing 0: angular contact radial bearings - nominal contact angle is larger than the radial bearings 0 to 45.

2) - an important thrust bearing used in rolling bearing under axial load, the nominal contact angle greater than 45 to 90. According to the public

Said contact angle different is divided into: axial contact bearing, male

Said contact angle for thrust bearing 90: thrust angular contact bearings, nominal contact angle greater than 45 but less than 90 of the thrust shaft

Bearing.

(2) according to the rolling bearing varieties, divided into:

1) ball bearing, roller ball:

2) roller bearings, roller roller. Roller bearing press roller variety, can be divided into: cylindrical roller bearing.

The rolling bearing cylindrical roller, cylindrical roller and the length of the straight

The ratio of diameter less than or equal to 3; needle roller bearings, needle roller bearing is a rolling body, the needle length to diameter ratio

In 3, but the diameter is less than or equal to 5mm; tapered roller bearing

- the rolling bearings tapered roller; roller bearings by the rolling bearing spherical roller.

(3) aligning whether according to their task, divided into:

1) aligning bearings, raceway is spherical shape, can adapt to the two bearing raceway deviation angle between the axis lines and angular motion;

2) non self-aligning bearing (rigid bearing) - bearing raceway between the axis line impedance angle offset.

(4) according to the number of rolling body, divided into:

1) single row bearings -- with a rolling body bearing;

2) double row bearings -- with two rows of rolling bodies bearing;

3) multi row bearing - with more than two rows of rolling bodies bearing, such as the three column, four row bearings.

(5) according to their components are respectively, divided into:

1) respectively, has respectively bearing bearing components;

2) can not be separately - bearing in the final after supporting bearings, rings are not bearing any free respectively.

(6) according to their structural shapes (such as with or without filling slots, with or without inner, outer ring and ring shape, structure, retaining edge very

To non retaining frame) can also be divided into structural types.

2 according to the rolling bearing size classification according to the outer diameter of bearing size, divided into:

(1) the miniature bearing, nominal diameter for bearing size below 26mm;

(2) small bearings -- nominal diameter size scale for 28-55mm bearing;

(3) small and medium-sized bearings, nominal diameter size scale for 60-115mm bearing;

(4) in large bearing - Nominal outside diameter size scale for 120-190mm bearing

(5) the large bearing - nominal diameter size scale for 200-430mm bearing;

(6) extra large type bearing, nominal diameter size for the bearing more than 440mm.

3 high precision bearings: robot bearings and CNC machine tool YRT turntable bearing

(1) the robot bearing: thin-walled cross roller bearings, cross roller bearings, cylindrical roller in a V shaped groove 90 degrees

The rolling surface through the isolated blocks are arranged vertically, the

To cross roller bearings can bear radial load, axial load and torque load and multi direction load. The inner ring and the outer ring gauge

"Is small, thin form is more close to the limit of small

Type size, and has the advantages of high rigidity, and the precision can reach P5, P4, P2. (2) YRT rotary bearing, by a push

Centripetal force / seat, a thrust / radial shaft washer, a thrust washer, two needle roller and cage assemblies and a set of concentric

Cylindrical roller.

Seat ring and the shaft ring with a screw hole with a uniform installation. This type of bearing with high axial and radial load capacity‍