Simply constructed armature bearings - by injecting a plastic into a groove in the armature as guide ring in the bearing region

摘要

Armature bearing in electro piston stroke magnets with considerable reduction of truing work on the armature and avoiding close tolerance work, while also avoiding use of additional guide ways and iron sleeves. A circumferential groove correspondingly wide is recessed into the armature in the region of the bearing position which is injected with a plastic bonded material in the shape of a guide ring, whose outer diameter is slightly larger than the external dia. of the armature. The bearing material is pref. a polyamide containing microscopically fine bronze beadlets, molybdenum disulphide and special light and dimension stabilising additives.