Bearing Noise and Vibration

Posted by admin

2020-08-12

On 2020-08-10

Bearing Noise and Vibration Detection:

Bearing noise and vibration – important metrics for bearing quality

Usually we use instrument S0910-1 to detect the noise of ball bearings.
We devide bearing noise into four levels: Z1, Z2, Z3, and Z4.
The higher the level, the lower the noise.

While for bearing vibriation, we use the instrument BVT-1 to detect.
We divide bearing vibration into four levels: Z1, Z2, Z3, and Z4.
The higher the level, the smaller the vibration.

Noise Levels Parameter Table:

Bearing Diameter	SO901-1（dB）
Bearing Diameter	Z1	Z2	Z3	Z4
㎜	≤	≤	≤	≤
3	34	32	28	23
4	34	32	28	23
5	36	34	30	25
6	36	34	30	25
7	38	35	31	26
8	38	35	31	26
9	40	36	32	27
10	42	38	33	28
12	43	39	34	29
15	44	40	35	30
17	44	40	35	30
20	45	41	36	31
25	46	42	38	33
30	47	43	39	35
35	49	45	41	36
40	51	46	42	38

Vibration Levels Parameter Table:

Diameter	V (um/s)			V1 (um/s)			V2 (um/s)			V3 (um/s)
d	V (um/s)			V1 (um/s)			V2 (um/s)			V3 (um/s)
mm	Low Frequency	Middle Frequency	High frequency	Low frequency	Middle Frequency	High frequency	Low Frequency	Middle Frequency	High frequency	Low Frequency	Middle Frequency	High Frequency
3,4	80	44	44	60	35	32	48	26	22	31	16	10
5,6	110	72	60	74	48	40	58	36	30	35	21	11
7,8,9	130	96	80	92	66	54	72	48	40	44	28	12
10,12	160	120	100	120	80	70	90	60	50	55	35	15
15	210	150	120	150	100	85	110	78	60	65	46	18
17	210	150	120	150	100	85	110	78	60	65	46	25
20	260	190	150	180	125	100	130	100	75	80	60	25
22,25	260	190	150	180	125	100	130	100	75	80	60	32
28	260	190	150	180	125	100	130	100	75	80	60	40
30,32	300	240	190	200	150	130	150	120	100	90	75	40
35	300	240	190	200	150	130	150	120	100	90	75	45
40	360	300	260	240	180	160	180	150	130	110	90	50
45	360	300	260	240	180	160	180	150	130	110	90	60
50	420	320	320	280	200	200	210	160	160	125	100	70

Is Bearing Accuracy Standard Related to Noise Level?

Generally, the accuracy of bearings has nothing to do with the noise level. They are two different grade standards.
As long as we measure bearing accuracy according to rotation accuracy and dimensional accuracy. While we judge noise by the decibel value of the abnormal sound during rotation. One is size and the other is decibel value.
Therefore, bearing accuracy standard has nothing to do with noise level.

Questions that help before the next bearing decision after Bearing Noise and Vibration

Which next options usually help after reviewing Bearing Noise and Vibration?

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 Bearing Noise and Vibration?

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 Bearing Noise and Vibration?

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 Bearing Noise and Vibration?

The main takeaway is that bearing noise and vibration 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

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