Merriman?? From Manchester, UK. (edit: I think I am confusing companies - wasn't Merriman American?) But the Merriman logo I know looked a bit like an industrial version of a trident.Anyone?
It might be better to dismantle it and try to find what the bearings are - they may well not be original. If you can measure them precisely enough, you might find a modern equivalent.I'll try to get a bigger picture. We are just trying to find the bearings to replace it
+1Take a sample to a big industrial bearing supplier. They have an unimaginable variety of bearings.