Zhejiang Mingxing Bearing Co.Ltd

Noise and Vibration

[ 2008/7/26 8:25:04 ]

Bearing vibration means bearing components’ elastic deformation that varies with time and all other movement that deviates from a theoretic position except that necessary to bearing functions. It has two modes-acceleration(dB)and velocity(μm/S), Vibration acceleration is examined by S0910-1 according to Z values. Grade Z is fundamental, Z1, Z2&Z3 successively indicate the vibration level ranges fron low to high. Vibration acceleration is examined by BVT-1 according to V values. Grade V is fundamental, V1, V2&V3 successively indicate the vibration level ranges fron low to high.

内径Bore diameter d/mm	V1)			V1			V2			V3			V4
内径Bore diameter d/mm	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency
3	80	44	44	60	35	32	48	26	22	31	16	15	28	10	10
4	80	44	44	60	35	32	48	26	22	31	16	15	28	10	10
5	110	72	60	74	48	40	58	36	30	35	21	18	32	11	11
6	110	72	60	74	48	40	58	36	30	35	21	18	32	11	11
7	130	96	80	92	66	54	72	48	40	44	28	24	38	12	12
8	130	96	80	92	66	54	72	48	40	44	28	24	38	12	12
9	130	96	80	92	66	54	72	48	40	44	28	24	38	12	12
10	160	120	100	120	80	70	90	60	50	55	35	30	45	14	15
12	160	120	100	120	80	70	90	60	50	55	35	30	45	14	15
15	210	150	120	150	100	85	110	78	60	65	46	35	52	18	18
17	210	150	120	150	100	85	110	78	60	65	46	35	52	18	18
20	260	190	150	180	125	100	130	100	75	80	60	45	60	25	25
22	260	190	150	180	125	100	130	100	75	80	60	45	60	30	32
25	260	190	150	180	125	100	130	100	75	80	60	45	60	30	32
28	260	190	150	180	125	100	130	100	75	80	60	45	60	35	40
30	300	240	190	200	150	130	150	120	100	90	75	60	70	35	40
32	300	240	190	200	150	130	150	120	100	90	75	60	70	35	40
35	300	240	190	200	150	130	150	120	100	90	75	60	70	42	45
40	360	300	260	240	180	160	180	150	130	110	90	80	82	50	50
45	360	300	260	240	180	160	180	150	130	110	90	80	82	60	60
50	420	320	320	280	200	200	210	160	160	125	100	100	95	70	70
55	420	360	360	280	220	200	210	180	180	125	110	110	95	70	70
60	480	360	440	320	220	240	240	180	200	145	110	130	100	80	80
1) In bearings code does not mean that.

Table For Single Bearing Vibration speen Grade can not be over the following Values

Bore diameter d/mm	V1)			V1			V2			V3			V4
Bore diameter d/mm	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency	低频LOW Frequ - ency	中频Medium Frequ - ency	高频High Frequ - ency
65	300	260	420	180	160	240	130	100	150	105	80	105	50	50	75
70	360	310	460	200	180	280	150	120	200	110	90	135	58	58	88
70	360	310	460	200	180	280	150	120	200	110	90	135	58	58	88
80	420	360	540	240	210	320	180	120	240	130	110	160	65	65	100
85	420	360	540	240	210	320	180	150	240	130	110	160	65	65	100
90	480	420	600	290	250	370	210	180	270	145	125	180	75	75	115
95	480	420	600	290	250	370	210	180	270	145	125	180	75	75	115
100	560	490	670	340	300	420	250	215	310	170	145	200	88	88	135
105	560	490	670	340	300	420	250	215	310	170	145	200	88	88	135
110	640	570	750	400	350	480	290	260	350	190	175	225	100	100	160
120	650	570	750	400	350	480	290	260	350	190	175	225	100	100	160
1) In bearings code does not mean that.

Deep Groove Ball Bearing Accelerating Vibration Value (µ m/s). See Table 8.9
Table 8 JB/T7047-1999

内径Bore diameter d (mm)	Single Bearing Vibration Speed Grade Allowed The Limit Value
	直径系列（0）Diameter Series(0)				直径系列（2）Diameter Series(2)					直径系列（3）Diameter Series(3)
	Z	Z1	Z2	Z3	Z	Z1	Z2	Z3	Z4	Z	Z1	Z2	Z3	Z4
3	35	34	32	28	36	35	32	30	-	37	36	33	31	-
4	35	34	32	28	36	35	32	30	-	37	36	33	31	-
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	-	-	-	-	-	-
8	39	38	35	31	40	38	36	34	-	-	-	-	-	-
9	41	0	36	32	42	40	37	35	-	-	-	-	-	-
10	43	42	38	33	44	42	39	35	30	46	44	40	37	32
12	44	43	39	34	45	43	39	35	30	47	45	40	37	32
15	45	44	40	35	46	44	41	36	31	48	46	42	38	33
17	46	44	40	35	47	45	41	36	31	49	47	42	38	33
20	7	45	41	36	48	46	42	38	33	50	48	43	39	34
22	47	45	41	36	48	46	42	38	33	50	48	43	39	34
25	48	46	42	38	49	47	43	40	36	51	49	44	41	37
28	49	47	43	39	50	48	44	41	37	52	50	45	42	38
30	49	47	43	39	50	48	44	41	37	52	50	45	42	38
32	50	48	44	40	51	49	45	42	38	53	51	46	43	39
35	51	49	45	41	52	50	46	43	39	54	52	47	44	40
40	53	51	46	42	54	52	47	44	40	56	54	49	45	41
45	55	53	48	45	56	54	49	46	43	58	56	51	47	44
50	57	54	50	47	58	55	51	48	45	60	57	53	49	46
55	59	56	52	49	60	57	53	50	47	62	59	54	51	48
60	61	58	54	51	62	59	54	51	48	64	61	56	53	50

Table 9

内径 Bore diameter d (mm)	Single Bearing Vibration Speed Grade Allowed The Limit Value
	直径系列（0）Diameter Series(0)			直径系列（2）Diameter Series(2)				直径系列（3）Diameter Series(3)
	Z	Z1	Z2	Z	Z1	Z2	Z3	Z	Z1	Z2	Z3
65	49	48	46	50	49	47	42	51	50	48	43
70	50	49	47	51	50	48	43	52	51	49	44
75	51	50	48	52	51	49	44	53	52	50	45
80	52	51	49	53	52	50	45	54	53	51	46
85	53	52	50	54	53	51	46	56	55	52	47
90	54	53	52	56	55	53	48	58	57	54	49
95	56	55	54	58	57	55	50	60	59	56	51
100	58	57	56	60	59	57	52	62	61	58	53
105	60	59	58	62	51	59	54	64	63	60	55
110	62	61	60	64	63	61	56	66	65	62	57
120	64	63	62	66	65	63	58	68	67	64	59