Angular contact ball bearings are mainly used on machine tool spindles. In most cases, the outer ring of such a bearing has a locking port and thus cannot seal the annular groove thus formed, so that many angular contact ball bearings used on the machine tool spindle cannot be used like other bearings on other mainframes. Fill with grease. If an auxiliary lubrication system is installed, it will increase the cost and make the machine structure more complicated.
FAG's Barden division has solved this problem. The advanced method is to insert a new type of grooved sealing ring into the bearing, which is slightly shallower than the standard bearing and fits exactly at the intersection, filling the gap left by the outer ring flange. The addition of this seal not only blocks the grease from leaking from both sides of the bearing, but also blocks the intrusion of dirt from both sides of the bearing.
Cornflower (Latin names: Centaurea cyanus l.) compositae cornflower annual or biennial herb, up to 70 cm tall, erect, branched, stem branches pale, leaf, the top line umbrella inflorescence or panicle.Involucre elliptical, flowers, blue, white, red, or purple, achene elliptic, and 2 - August.
The home of the knapweed in Europe.It is a kind of wild flowers, after years of cultivating people, it is less "wild" sex, flowers larger, more color, has the variety such as purple, blue, pale red, white, purple, blue is the most valuable among them.In Germany the hillsides, fields, water, the side of the road, everywhere it behind the house.It is celebrated as a national flower in Germany.
This is a "plant, at the same time is also a good honey plant.Flower can diuresis, whole grass lixivium can bright eye.Achene oil rate was 28%.
The north spring between April and June sowing, flowering six to nine months;Southern spring sowing sooner, direct engraftment of autumn sowing in outdoor winter, about 65 days from sowing to flowering.Like sunshine, hardy, resistance to heat and damp, cultivation requirements loose, fertile and well drained of sandy loam.
Cornflower Seeds,Blue Cornflower,Petals Soap Flower
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