Berikut adalah code bearing untuk motor RG atau RGV ni .
6205 – 2 unit (crankshaft)
6203 – 2 unit (gearbox)
6905 – 1 unit (shift gear box)
1312 – 2 unit (gear box)
Bearing ni tak ada spesifik yang untuk jenis motor apa apa. Kalau tak silap 6205 pun ada motor lain guna contoh SS2.
Tiap bearing ada code sendiri selain dari 6205, 6203 (<- ni jenis sahaja) iaitu C1, C2, C3 dan seterusnya. Maksud C1.. C2 ni ialah clearance bearing tu. Lagi besar clearance, lagi cepat pusing,. lagi cepat pusing lagi laju. Lagi laju lagi bising mungkin cepat jahanam?
Ni penerangan dari .. https://www.bearing-king.co.uk/article/why-are-your-bearings-c3
Internal clearance being C3 means that the bearing has room for expansion if needed between the races of the bearing, whilst holding the outer ring and moving the inner ring in a radial movement you will detect a little amount of play between the two rings. All standard clearance bearings have this movement, it may only be a small amount of movement but is controlled by international standards. C3 means the bearing has more clearance than standard.
For example we may use C3 clearance on bearings where a cold start up application my cause the balls to heat up quickly, the heat needs to go somewhere. Some of the heat gets passed through the outer race to the housing and the inner race to the shaft, this causes expansion which closes up the clearance in the bearing. If you did not allow for this clearance the bearing would not have room for expansion and lead to bearing failure.
It is never advisable to replace a bearing with one having a lower initial clearance. By the same argument, it is usually safe to substitute a larger clearance when the desired clearance is not available.