The structure and classification of KOYO bearing

Because of various kinds of machinery and have different working conditions, the KOYO imported bearings in loading capacity, structure and performance and other aspects have put forward different requirements. The sliding bearing is developed on the basis of the KOYO bearing imports, its working principle is based on the rolling friction instead of sliding friction, generally by the two ring, a rolling body and a holding frame composed of very strong versatility, standardization, serialization of a very high degree of mechanical foundation. Therefore,KOYO bearing with every kind of structure. However, the basic structure is composed of inner ring, outer ring, a rolling body and a holding frame.

The various components in the bearing of the role is the:

The radial bearing inner ring and the shaft, usually tight fit, and shaft run together, usually with outer ring bearing seat or mechanical shell holes into the transition fit, plays the supporting role. However, in some cases, also with an outer ring inner fixation operation, plays a role of supporting inner ring, outer ring or are running at the same time. The thrust bearing, and the shaft is tightly matched with the movement of the said shaft ring, and the bearing seat or mechanical shell holes into the transition fit and plays a role of supporting the said seat. The rolling body ( steel ball, roller or needle bearing ) in usually rely on the holder and uniformly arranged between the two rings for rolling motion, its shape, size and quantity directly affect the bearing load capacity and performance. The retainer in addition to the rolling body evenly spaced apart, but also guides the rolling body rotation and improve the bearing lubrication performance effect.

A . KOYO imported bearings classification of types of construction

( 1) bearing according to its can bear the load direction or nominal contact angle is different, divided into:

a. radial bearings, mainly used to bear radial load KOYO imported bearings, the nominal contact angle from 0 to 45. According to the nominal contact angle, divide again for: radial bearing -- nominal contact angle of 0 radial bearings: angular contact radial bearing -- nominal contact angle greater than 0 to 45 of the radial bearing.

b. thrust bearing, mainly used to bear the axial load KOYO bearings, the nominal contact angle greater than 45 to 90. According to the nominal contact angle is divided into: axial contact bearing -- nominal contact angle of 90 thrust bearings: thrust angular contact bearing -- nominal contact angle greater than 45 but less than 90 of the thrust bearing.

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

a. ball bearings, roller ball:

b.roller bearings - roller roller. Roller bearings in roller type, divide again for: cylindrical roller bearings - rolling body is cylindrical roller bearings, cylindrical roller length and diameter ratio of less than or equal to 3; needle roller bearings needle roller bearings - rolling body, needle length and diameter ratio greater than 3, but the diameter of less than or equal to 5mm; tapered roller bearings - rolling body is tapered roller bearings; spherical roller bearing one one rolling body is spherical roller bearing.

( 3) bearing according to their work can be adjustable, divided into:

a.a self-aligning bearing ---- raceway is spherical, able to adapt to two roller axis angle between deviation and angular movement of the bearing;

b. a self-aligning bearing ( rigid bearing ), impedance raceway axis centerline deviation angle bearing.

( 4) bearing in the rolling body row number, divided into:

a. single row bearing -- has a column roller bearing;

b. double row bearing - bearing with two rows of rolling bodies;

c.bearing -- with more than two rows of rolling bodies bearing, such as the three column, four row tapered roller bearing.

( 5 ) bearing according to its component can separate, divided into:

a. separable bearing -- with detachable components bearing;

b. can not be separated bearing - bearing in the final after supporting, the ferrule can freely separated bearing.

( 6) bearing according to its structure and shape ( such as a slot, with or without inner, outer ring and the ring shape, retaining edge structure, even without such as cage ) also can be divided into many types.

B. KOYO bearing imports bearing size classification according to the diameter size, divided into:

( 1) miniature bearings -- Nominal outside diameter size range below 26mm bearing;

( 2) small bearings -- Nominal outside diameter size range is 28-55mm bearing;

( 3 ) small and medium-sized bearings -- Nominal outside diameter size range is 60-115mm bearing;

( 4) in large bearing -- Nominal outside diameter size range is 120-190mm bearing

( 5) the large bearing -- Nominal outside diameter size range is 200-430mm bearing;

( 6) large bearings -- Nominal outside diameter size range is more than 440mm bearing.