Single Row Deep Groove Ball Bearings - Separable

The outer ring with one rib of separable single row ball bearings, types E and BO, is designed so that the inner ring with a cage and rolling elements can be mounted separately. The bearings are manufactured with a bore diameter up to d = 180mm and are suitable for lighter loads and high-speed applications.

The limiting values of the dimensional and running accuracy deviation correspond to ISO 492. An exception is made only for the Single row deep groove ball bearings are commonly manufactured within the tolerance class P0 and P6. For special applications requiring high accuracy or for applications with a high rotational speed, the bearings in the higher tolerance classes P6, P5 and P4 are used. The bearings in higher tolerance class P6E are used for rotating electric machines.

The limiting values of the dimensional and runing accuracy deviation correspond to ISO 492. An exception is made only for the separable single row ball bearings of types E or B0 the outer diameter D of which has the limiting deviation +0.01/0.00 mm.

The bearings in the tolerance classes P5 and P4 are made of higher quality materials such as electroslag or vacuum remelted bearing steels.

The commonly manufactured single row deep groove ball bearings have a normal radial clearance which is not indicated. For special arrangements the bearings with a reduced radial clearance (C2) or with an increased radial clearance (C3, C4, C5) are supplied.

The currently manufactured single row deep groove ball bearings have a normal vibration level determined by the manufacturer. For special applications with high requirements on noisless operation, bearings with reduced vibration level are supplied (C6).

The symbols for the tolerance classes, bearing internal clearances and vibration levels are combined with the simultaneous omission of the symbol C in the second and the following bearing special characteristics, e. g.:

P6 + C3 = P63                6004 P63

C3 + P6 = C36                6303-2RS C36

P6 + C3 + C6 = P636      6204-2Z P636

For arrangements with a higher operating temperature than 120°C, special heat treated-stabilised-single row deep groove ball bearings are supplied the form stability of which at operating temperature 150°C up to 400°C (S0, S1, S2, S3, S4, S5) is ensured.

The supply of stabilised bearings should be negotiated with the supplier in advance.

For single row deep groove ball bearings only small mutual misalignment of bearing rings is permissible, therefore alignment deviation of seating surfaces can be very small. Misalignment causes additional loading of the bearing and thus its life is shortened.

Values of permissible misalignment at normal operating conditions are shown in the table.

Bearing type                                         Load
                              light (Fr<0,15 Cor)            heavy (Fr ≥ 0.15 Cor)
618,619,160,60              2′ to 6′                                 5′ to 10′
62,63,64                        5′ to 10′                                8′  o 16′

Single Row Deep Groove Ball Bearings - Separable:
Pr = Fr for Fa/Fr ≤ 0,2

Pr = 0,5 Fr + 2,5Fa for Fa/Fr > 0,2

Coeficients

Fa/Cor      e        Y

0.025     0.22     2
0.040     0.24    1.8
0.070     0.27    1.6
0.130     0.31    1.4
0.250     0.37    1.2
0.500     0.44     1

Single Row Deep Groove Ball Bearings - Separable:

Por = 0,9 Fr + 0,3 Fa (Por ≥ Fr)

The bearing designation in the basic or current modified design is indicated in the dimension tables. The modification of the basic design is designated by additional symbols (prefixes and suffixes) in accordance with STN 02 4608. The meaning of the most frequently used symbols for the single row deep groove ball bearings is indicated in the table.