The type of machinery, the use of the bearing condition will have difference, the performance requirements are also different, but generally speaking, a shaft on the use of bearing no less than two FAG Bearing Limiting Speed http://www.fagbearing-china.com/ .

And, in order to facilitate the axial positioning, when using mostly will be used as a bearing fixed end bearing, the rest is used as a free end bearing. The following table lists the fixed end and free end bearing structure choice.

Apply to the capacitance in the bearing type

Fixed end bearing are used to make bearing axial positioning and fixed

Selection can be subject to both radial and axial load bearing

Is subject to bi-directional load, installation also need according to the size of the axial load considering the strength of the corresponding. Angular contact ball bearing deep groove ball bearing combination

Double row angular contact ball bearing self-aligning ball bearing

Carry penal cylindrical roller bearing (NUP, NH)

Double row roller bearing self-aligning roller bearing

The free end bearing is used for avoiding collision caused by temperature change in the operation of the axis of the scale, and used for bearing axial location.

Appropriate chooses only bear radial load, inner ring and outer ring separable bearing.

When using the release bearing, generally USES the clearance fit between outer ring and shell, so that the shaft axial slip together with the bearing when do give way. For avoiding collision caused by temperature change in the operation of the axis of the scale, and is used to adjust bearing axial position.

Appropriate chooses only bear radial load, inner ring and outer ring separable bearing.

When using the release bearing, generally USES the clearance fit between outer ring and shell, so that the shaft axial slip together with the bearing when do give way.

Regardless of the fixed end and free end Scaling the shaft of the bearing spacing is small, the impact is not big, can withstand the axial load of two angular contact ball bearing or tapered roller bearing and so on positive or configuration to use on the back.

With a nut or gasket axial clearance adjustment after installation. Deep groove ball bearings angular contact ball bearings

Self-aligning ball bearings cylindrical roller bearings

(NJ, NF)

Taper roller bearing self-aligning roller bearing

When used for vertical shaft Fixed end choose can bear radial load and axial load bearing. Axial load of bearing axial load is bigger, the centripetal bearing and thrust bearing.

Also free end choose only can bear radial load bearing, to avoid the telescopic shaft. Fixed end

Combination of angular contact ball bearings (combination) on the back

Double row circular cone roller bearings (37000)

Thrust bearing and radial bearing

Usually, the shaft is two bearings in the radial and axial support, at this point, called the bearing on one side of the fixed side bearing, it bear radial and axial load, the fixed axis and the relative axial displacement between the bearing box. Call the other side free side, only bear radial load, axial relative movement can to solve due to temperature change the shaft of the telescopic part of the topic and the installation of bearing interval error.

For fixed side bearing, choosing available rolling surface in axial moving (e.g., cylindrical roller bearing), or to move assembly surface, such as the centripetal ball bearings bearings. On the short shaft, the fixed side and free side little other cases, using one-way only fixed axial moving bearing (e.g., angular contact ball bearing).