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Tolerance And Accuracy

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Lubricant Types And Function

Vibration And Noise

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VIBRATION AND NOISE

The vibration and noise of bearings are classified as three classes as Z₁ ,Z_2,Z₃. It is measured by the instrument of SO910-11. For special requirement, it is measured by BVT-1 and classified as V₁, V₂, V₃. The daturn are shown as below.

MAXIMUM VIBRATION ACCELERATION OF SINGLE BEARING

d(mm)	Diameter Series				Diameter Series				Diameter Series
d(mm)	Z	Z₁	Z₂	Z₃	Z	Z₁	Z₂	Z₃	Z	Z₁	Z₂	Z₃
5	37	36	34	30	38	37	34	32	39	37	35	33
6	37	36	34	30	38	37	34	32	39	37	35	33
7	39	38	35	31	40	38	36	34	42	39	37	35
8	39	38	35	31	40	38	36	34	44	41	38	36
9	41	40	36	32	42	40	37	35	45	42	39	37
10	43	42	38	33	44	42	39	35	46	44	40	37
12	44	43	39	34	45	43	39	35	47	45	40	37
15	45	44	40	35	46	44	41	36	48	46	42	38
17	46	44	40	35	47	45	41	36	49	47	42	38
20	47	45	41	36	48	46	42	38	50	48	43	39
22	47	45	41	36	48	46	42	38	50	48	43	39
25	48	46	42	38	49	47	43	40	51	49	44	41
30	49	47	43	39	50	48	44	41	52	50	45	42
35	51	49	45	41	52	50	46	43	54	52	47	44
40	53	51	46	42	54	52	47	44	56	54	49	45

TOLERANCE DATA FOR VIBRATION SPEED OF SINGLE BEARING

um/s

D(mm)	V₁			V₂			V₃
D(mm)	Low Brand	Medium Brand	High Brand	Low Brand	Medium Brand	High Brand	Low Brand	Medium Brand	High Brand
5	90	60	50	58	36	30	35	21	18
6	90	60	50	58	36	30	35	21	18
7	110	80	65	72	48	40	44	28	24
8	110	80	65	72	48	40	44	28	24
9	110	80	65	72	48	40	44	28	24
10	140	100	85	90	60	50	55	35	30
12	140	100	85	90	60	50	55	35	30
15	180	130	100	110	78	60	65	46	35
17	180	130	100	110	78	60	65	46	35
20	220	160	125	130	100	75	80	60	45
22	220	160	125	130	100	75	80	60	45
25	220	160	125	130	100	75	80	60	45
30	250	200	160	150	120	100	90	75	60
35	250	200	160	150	120	100	90	75	60
40	300	250	220	180	150	130	110	90	80