1) comply with K technical conditions pairs bearing, the following special technical conditions and pairs bearing the:

K1-two sets of deep groove ball bearing installed in pairs to withstand a one-way axial load.

K2-two sets of deep groove ball bearing installed in pairs to withstand a two-way axial load.

K3-two set of deep groove ball bearing according to no clearance installed back-to-back (type O installation).

K4-two set of deep groove ball bearing no clearance face to face according to installation (X installation).

K6-two sets of Angle contact ball bearing installed in pairs to withstand a one-way axial load.

K7-two sets of Angle contact ball bearing according to no clearance installed back-to-back (type O installation).

K8-two set of Angle contact ball bearing no clearance face to face according to installation (X installation).

K9-inside, outside every lap belt between two sets of tapered roller bearing installed in pairs to withstand a one-way axial load.

K10-inside, outside every lap belt between two sets of circular cone roller bearings by no clearance installed back-to-back (type O installation).

K11-outer room with the circle of two sets of circular cone roller bearings by no clearance face to face installation (X installation).

Found in pairs or in group the configuration of the bearing, need packing words together delivery, or specify is to belong to a couple. The different groups of bearing not interchangeable. In the installation of belonging to the same group bearing, when installation should according to mark and localization. If all pairs bearing according to certain axial or radial clearance quantity configuration, the clearance in K technology conditions have after (7) of according to article 1 2) identified. For example, 31314 a. K11. A100.140 said the two sets of 31314 A single row circular cone roller bearings, face-to-face installation, outer room with A certain distance, front axle bearing assembly to clearance in 100 microns to 140 micron between, the assembly to clearance is zero.

2) general matching type FAG bearing, can be arbitrary (series, face-to-face or back-to-back) matching installation, or code for UA, UO and UL.

. UA-in bearing face-to-face or have small installed back-to-back axial clearance.

. UO-in bearing installed back-to-back face-to-face or without clearance.

 
UL-TIMKEN bearing in face-to-face or back-to-back installation midly preloaded tracker. For example, B7004. TPA. P4. K5. UL said spindle for 15 degrees with contact Angle is the Angle contact ball bearing, phenolic layer pressure piping straight pocket hole entity keep frame, outer ring guide, bearing tolerance grade level 4, inner and outer tolerance narrowed, and pair of installation universal structure, bearing in back-to-back games or face to face installation midly preloade



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