Standard duty:SUK - wider inner ring bearing with spherical OD and tapered bore.
All stainless steel: -Balls & Rings 420 -Retainer,flinger & setscrews 201 -Frame 304 + Silicon rubber seal -Adapter sleeves mild steel.
Lubrication groove with hole on adapter sleeve side // Anti-rotation device // Lubricated with NSF H1 registered food grade grease