Sorry, just to clarify, yes this is the correct bearing, watch out for the 'X/26' has a 26mm ID, not 25mm - you need the 25mm 'JR' or the normal 'X'. I've amended the OP.

To confirm, the dimensions are:

Upper: I/D 25mm x O/D 47mm x W 15mm

Lower: I/D 30mm x O/D 55mm x W 17mm

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