The telling photo is the one that says "made in Japan" so it has a standard 1.37 x 24T bottom bracket, not a proprietary one like on the much older Raleighs.

They are common as dirt and can be found in numbers on the big auction site, your local co-op (cheapest way to go), and even many bike shops that still wrench on old bikes. Or you can get a cartridge type bottom bracket that fits the same, but you'll need the special tool (about $10) to get it in.

Edit: or just take up TimmyT's offer He's got what you need.