Page 544 - SKF-bearing-housings

Flanged housings FNL series

Load carrying capacity Table 3
The permissible radial loads for a flanged Breaking loads for FNL housings
housing depend on the bearing, the breaking
load of the housing and the strength of the
attachment bolts. Guideline values for the
breaking loads of the housings are provided
in table 3.
The permissible axial loads for a flanged
housing are limited by the friction between the
sleeve and shaft. P 1 P 2 P 3
Additional housing support
When the housing is subjected to heavy radial
loads, a stop or dowel pins should be used to
relieve the load on the attachment bolts. A
shoulder or a guide ring on the support surface
engaging a centring recess can also be used. Housing Breaking loads
Whichever method is used, it should be suf- Size P 1 P 2 P 3
ficiently strong to accommodate the loads act- – kN
ing parallel to the support surface.
Recommendations for the position and size
of the holes to accommodate dowel pins are FNL 505 50 40 80
45
85
FNL 506
60
provided in table 4. Dimples cast into the FNL 507 70 50 90
housing flange mark the recommended FNL 508 80 55 95
positions. FNL 509 90 60 100
FNL 510 100 65 105
FNL 511 110 80 110
Operating temperature FNL 512 120 95 115
FNL 513 130 110 190
The permissible operating temperature is
mainly limited by the seals († table 2, page FNL 515 140 125 265
140
340
FNL 516
150
538) and the lubricant. For temperature limits FNL 517 160 155 415
of SKF bearings and lubricants, refer to the FNL 518 170 170 490
product information available online at FNL 520 180 185 565
skf.com/bearings. FNL 522 190 200 640
The housing material does not set any addi-
tional temperature limits, except for very low
temperature applications where impact
strength could be a factor.
The housing paint is heat resistant up to
80 °C (175 °F) material temperature or
100 °C (210 °F) ambient temperature.
When temperatures outside the permissible
range are expected, contact the SKF applica-
tion engineering service.

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