Yes. The load capacity will decrease, when using rolling bearings in media lubricated or dry running conditions.
The catalog value is calculate for a perfectly lubricated bearing with oil or grease. If the bearing will be lubricated by media like water, liquid plastic, etc., the load capacity...
Hi,
if you use a bearing inside an oven, the temperature (normally) does not allow the usage of any kind of grease. So you have to use a solid lubricant like graphite (already mentioned) or a kind of bearing which avoids adhesion or cold welding between raceway and rolling elements in dry...
