FAG Angular Contact Thrust Ball Bearings double direction
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1 FAG Angular Contact Thrust Ball Bearings Basic designs Tolerances Preload Speed suitability Cage Lubrication are precision bearings with narrow tolerances. They are mainly used in precisiopindles of machine tools where the angular contact thrust ball bearing is located next to a double-row cylindrical roller bearing with tapered bore. Due to their varying designs, angular contact thrust ball bearings can be mounted on the small taper diameter end (series 2344) or on the large taper diameter end (series 2347). are separable. Their components must not be interchangeith parts of other bearings of identical size. Basic designs FAG angular contact thrust ball bearings of series 2344 and 2347 have the same nominal outside diameter as cylindrical roller bearings NN30ASK. The outside diameter tolerance of the thrust bearing results in a loose fit if the seats of the thrust bearing and of the cylindrical roller bearing are machined in one setting. Recoendations for machining tolerances of the bearing seats are given in FAG publ. no. AC FAG angular contact thrust ball bearings have a contact angle of 60 and consequently a high axial load carrying capacity and rigidity. Preload The preload of angular contact thrust ball bearings is determined by means of the spacer ring between the two shaft washers. Speed suitability are suitable for high s. The dimension tables show guide values for the attainable s at grease lubrication and oil throwaway lubrication. The high s may not be reached if the cylindrical roller bearing arranged beside the thrust bearing runs under preload. Cage In addition to the lubrication (see following section), the machined brass cage (suffix M) has a decisive influence on the high- suitability of double row angular contact thrust ball bearings. Every ball row has its own, ball-riding cage. Tolerances are produced in the tolerance class SP. Tolerance class UP on request. Tolerances: Thrust bearings, page 70. Lubrication are adequately lubricateith oil anith grease. The FAG rolling bearing grease Arcanol L74V is particularly suitable for for-life lubrication. The highest s are reacheith oil lubrication. The housing washer has a lubricating groove and lubricating holes to allow the oil to flow between the two ball rows. At high s overlubrication of the radial bearing is avoided by inserting a seal ohield in the space between the angular contact thrust ball bearing and the cylindrical roller bearing. FAG FAG
2 Equivalent loads Suffixes Abutment dimensions Equivalent dynamic load Angular contact thrust ball bearings which are installed beside a cylindrical roller bearing transmit only axial loads. P = F a [kn] Equivalent static load Angular contact thrust ball bearings which are installed beside a cylindrical roller bearing transmit only axial loads. P 0 = F a [kn] To ensure an adequate quietness of running of the bearings, the index of static stressing f s should not be less than 2.5. f s = C 0 /P 0 C 0 static load rating [kn] see bearing tables Suffixes M machined brass cage, ball-riding SP tolerance class SP Abutment dimensions See page 123 foeneral information on the abutment dimensions. The tables list the maximum fillet radius and the diameters of the abutment shoulders. FAG 478
3 g d s D w g d s C C 0 Grease Oil Bearing M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP FAG FAG
4 g d s D w g d s C C 0 Grease Oil Bearing M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP FAG FAG
5 g d s D w g d s C C 0 Grease Oil Bearing M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP FAG FAG
6 g d s D w g d s C C 0 Grease Oil Bearing M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP M.SP FAG FAG
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