Page 411 - SKF-bearing-housings

Design considerations

Table 5
Safe loads and cap bolt information for SAW housings made of grey cast iron

P 60° P 90° P 120°

P 150° P 180°

Housing Recommended safe loads Cap bolt
Size P 60° P 90° P 120° P 150° P 180° (no.) size Torque SAE grade
– lbf. in. ft.-lbs.
520 26 720 16 000 10 000 9 000 11 000 (2) 3/4-10 380 8
526 42 585 25 500 16 600 15 300 19 000 (2) 1-8 900 8 8
528 43 420 26 000 16 600 15 000 18 300 (4) 7/8-9 165 2
538 65 130 39 000 24 000 21 200 25 500 (4) 7/8-9 600 8
540 81 830 49 000 30 500 27 000 32 500 (4) 7/8-9 600 8
544 95 190 57 000 36 000 32 500 39 000 (4) 1-8 900 8

Additional housing support refer to the product information available
When the housing is subjected to loads acting online at skf.com/bearings.
parallel to the support surface, it may be The housing material does not have any
ne cessary to pin the housing to the support additional temperature limits, except for very
surface or to provide a stop to counter the low temperature applications where impact
load. strength could be a factor. The housing paint is
When loads act at angles between 60° and heat resistant up to 175 °F material tempera-
120°, or when the axial loads are greater than ture or 210 °F ambient temperature.
25% of P 180° , the housing should be pinned When temperatures outside the permissible
to the support surface or a stop should be range are expected, contact the SKF application
provided to counter the load. The dowel pins or engineering service.
stop should be sufficiently strong to accom-
modate the loads acting parallel to the support
surface. Dimples indicating the recommended Operating speed
positions for dowel pins are cast into the base All seals, except non-contact labyrinth seals,
of the housing. limit the permissible operating speed. Speed
limits for seals are provided in table 2 on
page 392. For speed limits of the bearing,
Operating temperature refer to the product information available
The permissible operating temperature is online at skf.com/bearings.
mainly limited by the seals († table 1, page
390) and the lubricant in the bearing. For tem-
perature limits of SKF bearings and lubricants,

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