What Does C3 Mean on a Bearing

Posted by admin

2020-11-02

On 2020-10-30

Bearing Cleanrance Introduction:

What does C3 mean on a bearing ? C3 referes to bearing clearance.

Bearing clearance is the gap between the bearing rolling elements and the inner and outer ring shells of the bearing.
The so-called bearing clearance refers to the amount of movement when the bearing inner ring or outer ring is fixed, and then the bearing clearance is not fixed to move radially or axially.

Bearing Clearance Classification:

Bearing clearance can be divided into three groups according to the size.

One group is the normal clearance group (C0), Small clearance group (C2), and large clearance group (C3, C4).

① Under normal working conditions, normal clearance C0 should be selected first;
For example: 6007ZZ single row ball bearing , 6303-ZZ bearings and so on.
② The large clearance group(C3, C4) is suitable for the large interference between the inner and outer rings, or the large temperature difference between the inner and outer rings, deep groove ball bearing needs to bear a larger axial load or need to improve the alignment performance, or need to increase the bearing limit speed and reduce bearing friction torque and other occasions.
For example 6220-2Z/C3 ball bearing, 6317-2RS1/C3 deep groove ball bearing , etc.
③ The small clearance group (C2) is suitable for high rotation accuracy and occasions which need strict control of the axial displacement of the housing hole and reduce vibration and noise.
Normally speaking, C2 clearance group bearings need to be custom made.

For deep groove ball bearings, radial clearance is as below,

Bearing ID(mm)		C2		C0		C3		C4		C5
＞	≤	min	max	min	max	min	max	min	max	min	max
2.5	10	0	7	2	13	8	23	14	29	20	37
10	18	0	9	3	18	11	25	18	33	25	45
18	24	0	10	5	20	13	28	20	36	28	48
24	30	1	11	5	20	13	28	23	41	30	53
30	40	1	11	6	20	15	33	28	46	40	64
40	50	1	11	6	23	18	36	30	51	45	73
50	65	1	15	8	28	23	43	38	61	55	90
65	80	1	15	10	30	25	51	46	71	65	105
80	100	1	18	12	36	30	58	53	84	75	120

For double row angular contact ball bearings, axial clearance is as below,

Bearing ID (mm)		C2		C0		C3
＞	≤	min	max	min	max	min	max
—	10	1	11	5	21	12	28
10	18	1	12	6	23	13	31
18	24	2	14	7	25	16	24
24	30	2	15	8	27	18	37
30	40	2	16	8	29	21	40
40	50	2	18	11	33	23	44
50	65	3	22	13	36	26	48
65	80	3	24	15	40	30	54
80	100	3	26	18	46	35	63

If you have any questions of What does C3 mean on a bearing, pls feel free to contact us.
We will reply you within 12 hours !

Questions buyers still ask while reviewing What Does C3 Mean on a Bearing

Which next options usually help after reviewing What Does C3 Mean on a Bearing?

Most buyers benefit from one broader family destination, one more commercial route, and one supporting guide that answers the next practical question. That combination usually turns research into a clearer shortlist.

Why add related bearing destinations beside What Does C3 Mean on a Bearing?

Because the first answer often leads to a second question about fit, applications, supplier choice, or repeat-order confidence. Keeping those next destinations close reduces unnecessary backtracking.

When is it worth moving from reading into a quote or product review?

That move usually makes sense once the topic has narrowed the likely bearing family and the remaining unknowns are commercial, dimensional, or application-specific rather than purely educational.

What usually makes the next bearing decision easier after What Does C3 Mean on a Bearing?

The process is often easier when the wider family view, the more commercial destination, and one practical guide stay visible together. That keeps the decision grounded in both application detail and buying reality.

Buyer FAQ

Questions buyers ask before choosing the next bearing option

What is the main takeaway from What Does C3 Mean on a Bearing?

The main takeaway is that what does c3 mean on a bearing should be checked against the bearing family, dimensions, load direction, speed, and operating conditions instead of relying on the title or size alone.

When should I use this guide before requesting a quote?

Use the guide when you are comparing bearing models, checking suffix meanings, confirming seal or clearance choices, planning maintenance, or preparing details for replacement, production, or OEM sourcing.

How does this topic connect to bearing supply?

The topic supports the Bearing Supply decision path by helping buyers understand fit, performance, specification details, or maintenance factors before choosing a product page or contacting the team.

Can this guide replace a final specification check?

No. The guide helps prepare the decision, but a final check should still confirm the part number, dimensions, load, speed, seal, clearance, precision, application, and order quantity.

What should I send if I need help after reading this guide?

Send the bearing number, measured size, photos if available, application, quantity, and any special operating conditions. That gives the team enough context to recommend the right product family or quote route.

Need help checking fit, price, or lead time? Request a bearing quote

Blog