Spherical Roller Bearing BS2-2206-2CS/VT143

Bearings with cylindrical bore

   Spherical roller bearings of all series are available with inner rings having a cylindrical bore.

Bearings with tapered bore

   Spherical roller bearings are also available, with the exception of series 233..-A, with inner rings having a tapered bore.

   Bearings with the suffix K have a bore taper 1:12, bearings of series 240 and 241 have a bore taper 1:30 and the suffix K30.

Bearings with adapter sleeve or withdrawal sleeve

   Bearings with a tapered bore are also available with an adapter sleeve, locknut and tab washer or with a withdrawal sleeve.

   Adapter and withdrawal sleeves must be ordered in addition to the bearing.

Sealing

   We can by agreement supply sealed and greased bearings.

Lubrication

   Open spherical roller bearings can be lubricated with oil or grease.

    Most spherical roller bearings have a circumferential groove and three lubrication holes in the outer ring for lubrication. In bearings of series 239 with an outside diameter < 320 mm, this is indicated by the suffix S.

Bearings of series 213 with a bore diameter up to 35 mm do not have a lubrication groove and lubrication hole.

    If shafts with a vertical axis are supported using spherical roller bearings, particular attention must be paid to ensuring the reliable provision of lubricant. In such cases, oil lubrication should be used.

Operating temperature

   Spherical roller bearings are dimensionally stable up to +200 °   C. Bearings with metal cages can be used at operating temperatures from -30 °C to +200 °C.

   Bearings with cages made from glass fibre reinforced polyamide are suitable up to +120 °C.

 Cages

    The standard cages for spherical roller bearings are shown in the table and link.

    Spherical roller bearings with a rigid central rib on the inner ring (design without suffix E1) have solid cages or sheet metal cages made from brass. Bearings with sheet metal cages do not have a cage suffix.

    In bearings with the suffix MB, the solid brass cages are guided on the inner ring while, in bearings with the suffix MA, they are guided on the outer ring, Figure 2. Bearings with the suffix M have a roller-guided solid brass cage, Figure 2.

X-life bearings

   Bearings of series 213..-E1, 222..-E1, 223..-E1, 240..-E1 and 241..-E1 without a cage suffix have sheet steel cages. The two cage halves are retained by a guidance ring in the outer or inner ring, Figure 1.

    In bearings of series 223..-E1, 240..-E1 and 241..-E1, all sheet steel cages have special protection against wear by means of surface hardening or coating.

   The other bearings of E1 design have solid cages made from ­glass fibre reinforced polyamide 66 or solid brass cages (suffix TVPB or M), Figure 2.

   Check the chemical resistance of polyamide to synthetic greases and lubricants with EP additives.

   Aged oil and additives in the oil can impair the operating life of plastic cages at high temperatures.

   The oil change intervals must be observed.