Page 371 - SKF-bearing-housings

Lubrication

Using a circulating oil lubrication system with roller bearings, to allow the oil to pass through
spherical roller bearings the bearing. Therefore, SONL housings with
SONL housings have two tapped holes in the the designation suffix RA († page 356) are
cap that can be used as oil inlets. The hole in recommended.
the centre of the cap should be used to lubri- SONL .. RA housings have two tapped holes
cate spherical roller bearings with a relubrica- in the cap that can be used as oil inlets. For
tion feature (a lubrication groove and holes in CARB toroidal roller and self-aligning ball
the outer ring). bearings, always use the offset oil inlet hole in
The housing base has four tapped holes that the housing cap, and two oil outlet holes on the
can be used as oil outlets. opposite side of the housing, to make sure the
oil has to pass through the bearing and to get
Using a circulating oil lubrication system with enough outlet capacity.
CARB and self-aligning ball bearings
In a circulating oil lubrication system, CARB
toroidal roller bearings and self-aligning ball
bearings, which are relubricated from the side,
require another design compared to spherical
7
Table 7
Abutment dimensions for circulating oil lubrication systems and oil bath lubrication with a pick-up ring

P 1
P G

P 2
O 2
R 2
O 1
30 R G
R 1

Housing Dimensions
Size P G P 1 P 2 R G R 1 R 2 O 1 O 2
– in. mm in. mm

217-517 G 3/8 47,5 40 G 3/4 118 22 97 138
218-518 G 3/8 50 41 G 3/4 128 22 97 142
220-520 G 3/8 50 47 G 3/4 144 22 97 150
222-522 G 3/8 55 53 G 3/4 162 23 98 163
224-524 G 3/8 55 65 G 3/4 178 25 100 179
226-526 G 3/8 60 69 G 3/4 192 25 120 184
228-528 G 3/8 65 72 G 3/4 200 26 121 187
230-530 G 3/8 65 73 G 3/4 220 26 121 187
232-532 G 3/8 65 78 G 3/4 252 26 121 196
234-534 G 3/4 85 88 G 1.1/2 268 41 136 215
236-536 G 3/4 85 93 G 1.1/2 278 41 136 220
238-538 G 3/4 85 98 G 1.1/2 298 41 166 225
240-540 G 3/4 85 100 G 1.1/2 320 41 166 229
244-544 G 3/4 105 108 G 1.1/2 360 41 166 239
248-548 G 3/4 110 115 G 1.1/2 400 41 216 244

367