When it comes to bearings you don't need a partnumber.
In the provided links you can see that the bearing has the dimension: 20 x 47 x 14, and the seal is 25 x 47 x 7.
Bring these numbers to your supplier and ask for a doubled sealed bearing, and a regular seal.
But honestly, for £20 quids I would have taken the first chance I got to get a set of bearings and seals. I don't know how much Your time is worth, but I find it silly to spend several hours to save potentially £5 quids.
The mentioned dimensions are in use all over, and the nearest machine shop or garage will probably have some on their shelves.
A quick search on ebay shows:
Bearing:
6204-2RS,
6204 refers to the size, 2RS means 2 Rubber Seals.
As for the seal:
SKF 25 x 47 x 7 shows SKF number 692320.
In the provided links you can see that the bearing has the dimension: 20 x 47 x 14, and the seal is 25 x 47 x 7.
Bring these numbers to your supplier and ask for a doubled sealed bearing, and a regular seal.
But honestly, for £20 quids I would have taken the first chance I got to get a set of bearings and seals. I don't know how much Your time is worth, but I find it silly to spend several hours to save potentially £5 quids.
The mentioned dimensions are in use all over, and the nearest machine shop or garage will probably have some on their shelves.
A quick search on ebay shows:
Bearing:
6204-2RS,
6204 refers to the size, 2RS means 2 Rubber Seals.
As for the seal:
SKF 25 x 47 x 7 shows SKF number 692320.
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