Please informe me about bearing e.g ball bearing, what is meaning of number a

Please informe me about bearing e.g ball bearing, what is
meaning of number apearing in bearing or bearing housing.
for example:- 6305 or UC P 206

Question Posted / sharma_vachaspati

2 Answers
8682 Views
SKF‎, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Please informe me about bearing e.g ball bearing, what is meaning of number apearing in bearing o..

Answer / nihar ranjan

Commonly 4 or 5 nos. appears in the bearing outer cage, The designation is for recognizing the type & size of bearing. e.g, 6305 .
1st two nos. 63 series used for deep groove ball bearing,
last two no. 05 for bearing bore size . But every time we need to multiple the no. by 5. So here in this case bearing size will be 05X5= 25 i,e 25 mm.
If there are any suffix , like RS or 2Z or Z ,etc then it is used for type of sealing used.
RS for rubber seal,
Z for metallic(one side)
2z for both side metallic.

Is This Answer Correct ?

12 Yes

0 No

Please informe me about bearing e.g ball bearing, what is meaning of number apearing in bearing o..

Answer / lipu

Bearing No. generally of 5 digit(no.), 1st 3 nos(from left ) is called dimension series e,g Bearing No. 6305, No. 63 is dimension series 6 is for deep groove bearing, and if there is one '0' which is width series and 3 is for height series. and as mention in 1st answer the last 2 nos. 05 is your Bore dia by multiplying 5.
The 5 multiplication is for bearing dia 20-494 mm dia. only.

Is This Answer Correct ?

2 Yes

1 No

Post New Answer

More Mechanical Engineering Interview Questions

pls send the technical question paper

0 Answers Goodrich, HAL,

Is a diesel engines maximum rpm limited by the diesel burn rate?

0 Answers

When we open the door of refrigerator then we feel hot,why?

3 Answers BARC, KPIT, Power Plant,

what is the difference between air-conditioner and cooler?