Mainly for the record, in case someone else has the same problem as me
The wire feed PINCH roller on my little cebora was seized when I aquired it, and when I tried to free it off it shattered.
This roller is just a ball race on a stub.
It turns out... The correct replacement is about 6mm ID by 22mm OD, 7mm 'thick'
I had two further problems. Firstly, i mis-measured it, and bought a 10x22x6mm. Secondly, once I had removed the stub from the (very basic) wire pinch system, which was riveted in place, i couldn't get the inner race off the stub. So, i used a crude approach...
I ground the inner race (very hard, couldn't easily drill it to remove it) down to just bigger than 10mm. Then, i pushed the wrong size bearing on the stub, got it nice and square, and reassembled, including a sharp tap from a punch to re-rivet the stub onto the assembly.
Refitted, and it now works a treat
Eventually i suspect the re-rivetted part will fail and I will have to replace the assembly, but until then it works nicely, apart from a knackered liner.
If anyone is interested, I will get some piccies.
The wire feed PINCH roller on my little cebora was seized when I aquired it, and when I tried to free it off it shattered.
This roller is just a ball race on a stub.
It turns out... The correct replacement is about 6mm ID by 22mm OD, 7mm 'thick'
I had two further problems. Firstly, i mis-measured it, and bought a 10x22x6mm. Secondly, once I had removed the stub from the (very basic) wire pinch system, which was riveted in place, i couldn't get the inner race off the stub. So, i used a crude approach...
I ground the inner race (very hard, couldn't easily drill it to remove it) down to just bigger than 10mm. Then, i pushed the wrong size bearing on the stub, got it nice and square, and reassembled, including a sharp tap from a punch to re-rivet the stub onto the assembly.
Refitted, and it now works a treat
Eventually i suspect the re-rivetted part will fail and I will have to replace the assembly, but until then it works nicely, apart from a knackered liner.
If anyone is interested, I will get some piccies.