20
Duroplast (PF)
black, shiny
jack
steel
zinc plated, blue
Thermoplastic (Polyamide PA): impact resistant
black, matt
jack
Galvanized steel, blue passivated
SBL:
Housing: steel, turned, zinc-plated, blue passivated
Ball: steel, bare
SNI:
housing: steel, turned, zinc-plated, blue passivated
ball: stainless steel, stainless, 1.4034
NNI:
housing: stainless steel, 1.4028 and Material No. 1.4305 (only size 15)
ball: stainless steel, stainless, 1.4034
Housing: steel, turned, zinc-plated, blue passivated
Ball: steel, bare
You do not have a support collar, but take the load on the housing diameter d2.