Jinma 25hp and 28hp, JM254 and JM284. 55mm ID x 90mm OD x 18mm width.
There are possible variants of all parts.
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JM200 series JM254 JM284. GB/T278 Pilot bearing Jinma 200 series 6203-Z. Sealed both sides...
Jinma 25hp and 28hp, JM254 and JM284. 55mm ID x 90mm OD x 18mm width.