Page 365 - SKF-bearing-housings

Design considerations

Load carrying capacity contact the SKF application engineering
SONL housings are intended for loads acting service.
perpendicularly toward the support surface.
The housings should always be supported over Breaking loads and safety factors
the entire base. Perpendicular loads acting Guideline values for the breaking loads P for
towards the base are limited only by the bear- housings made of grey cast iron are listed in
ing. If loads acting in other directions occur, be table 2. To obtain the permissible load for a
sure that the magnitude of the load is permis- housing, the appropriate breaking load value
sible for the housing, the cap bolts and the should be divided by a factor based on the
attachment bolts. When housings are sub- safety requirements. In general engineering,
jected to cyclic loads or dynamic imbalance, a safety factor of 6 is typical († Load carrying
Table 2
Breaking loads for SONL plummer block housings made of grey cast iron

7

P 55° P 90° P 120°

P 150° P 180° P a

Housing Breaking loads
Size P 55° P 90° P 120° P 150° P 180° P a
– kN

217-517 690 260 190 180 230 90
218-518 900 350 250 230 300 120
220-520 1 080 450 300 280 360 140
222-522 1 260 500 350 320 420 170
224-524 2 100 780 580 540 700 280
226-526 2 550 980 700 650 850 340
228-528 2 550 1 020 700 650 850 340
230-530 3 000 1 230 830 770 1 000 400
232-532 3 000 1 230 830 770 1 000 400
234-534 3 360 1 330 940 860 1 120 450
236-536 3 750 1 530 1 040 960 1 250 500
238-538 3 750 1 530 1 040 960 1 250 500
240-540 4 950 2 000 1 380 1 270 1 650 660
244-544 6 350 2 550 1 750 1 600 2 100 840
248-548 6 350 2 550 1 750 1 600 2 100 840

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