Page 1011 - Rollingbearings

Deep groove ball bearings for high temperature applications
Fig. 6
High temperature deep groove ball bearing variants

VA201 2Z/VA201 2Z/VA208 2Z/VA228

Table 1
18
Characteristics of high temperature variants for deep groove ball bearings
Characteristics Variants
VA201, 2Z/VA201 2Z/VA208 2Z/VA228

Lubrication type Polyalkylene glycol/ Segmented cage Coronet cage
graphite mixture made of graphite made of graphite
Phosphated rings, rolling elements ✔ ✔ ✔
and cages
NSF H1 food grade ✘ ✔ ✔
Shields (sufix 2Z) optional ✔ ✔
Relubrication-free 2Z variant ✔ ✔

Maximimum operating temperature 250 °C (480 °F) 350 °C (660 °F) 350 °C (660 °F)
Limiting speed [r/min] 1) 4 500 / d m 4 500 / d m 9 000 / d m

1) d m = bearing mean diameter = 0,5 (d + D). For outer ring rotation, use d m = D.

Fig. 7 Fig. 8
Nilos ring SKF sealing washers

1009