Page 541 - SKF-bearing-housings

Housing variants

Dimension standards Table 1
The dimensions of FNL flanged housings are Centring recess on FNL housings
not standardized either nationally or
internationally. b

Interchangeability
FNL flanged housings are dimensionally inter-
changeable with the earlier 7225(00)
housings. D i D y

Housing variants
In addition to standard design FNL flanged
housings, variants are also available. Variants
include housings with centring recesses and
grease escape holes. Housing Recess dimensions
Size b D y D i
H8
Centring recesses – mm
FNL flanged housings can be supplied with a
machined recess, which can be used to centre FNL 505 3 3 60 35
48
70
FNL 506
the housing on a shoulder. With this arrange- FNL 507 4 80 53
ment, the attachment bolts are not subjected FNL 508 4 90 60
to shear forces. The shoulder can be provided FNL 509 4 100 65
either by machining the wall or by attaching FNL 510 5 100 68
a guide ring to the wall. FNL 511 5 105 78
FNL housings with a machined recess can FNL 512 5 5 120 90
FNL 513
90
130
be supplied on request and are identified by
the designation suffix P, e.g. FNL 511 BP. FNL 515 6 6 150 105
FNL 516
150
110
Dimensions for the recess and the shoulder or FNL 517 6 170 120
guide ring are listed in table 1. 11
FNL 518 7 170 120
FNL 520 6 200 140
FNL 522 6 220 160
Grease escape hole
FNL flanged housings can be supplied with
a grease escape hole in the cover († fig. 7). Fig. 7
This housing variant can be supplied on
request and is identified by the designation
suffix V, e.g. FNL 511 AV.

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