Rubber seating rings “cushion” insert bearings in pressed steel pillow block housings. This helps dampen vibration and noise, and enables these bearings to be displaced slightly in their housings so that minor shaft expansion or misalignment can be accommodated. They can be fitted on all SKF insert bearings, except for those with a standard inner ring (17262 and 17263 series).
Rubber seating rings are made of NBR and can withstand temperatures ranging from –30 to +100 °C (–20 to +210 °F). Rubber seating rings are available as an accessory and must be ordered separately.
Rubber Seating Rings for Insert Bearing
D B C d1 d2 D1 RPM Model 40 12 18.00 35.50 39.80 47.30 1.00 RIS 203 47 14 19.00 41.20 46.80 52.30 1.00 RIS 204 52 15 20.50 46.40 51.80 62.30 1.00 RIS 205 62 18 21.50 54.60 61.80 72.30 1.00 RIS 206 A 72 19 23.00 63.70 71.80 80.30 1.50 RIS 207 A 80 21 24.00 70.70 79.70 85.30 1.50 RIS 208 A