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Sizuoka technical standard

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08.62675513/0908.301.168

08.62675514

STANDARD TOLERANCES FOR DEEP GROOVE BALL BEARINGS

According to dimension tolerances and runout accuracy, SIZUOKA deep groove ball bearings grades are as ABEC-1,ABEC-3, ABEC-5, ABEC-7, ABEC-1 is standard grade, while ABEC-3, ABEC-S much higher and ABEC-7 the highest. These tolerance grades corresponds in respect to those of precision adopted by the International Standard Organization(ISO 492). The grades corresponds as follows:

STANDARD BEARING MATERIALS
RINGS & BALLS - SAE - 52100 vacuum degassed, high carbon, chromium bearing steel is the standard

material for precision bearing rings and balls. In applications where a corrosive environment may be

present, We recommend the use of AISI-440C martensitic stainless steel. 440C is designated by an "S’

prefix in our part numbers.

Thông tin liên hệ: ml@mlcorp.us Điện thoại: (08)62675513—Hotline: 0908.301.168

Steel No.

Chemical composition %

C

Si

Mn

P

S

Cr

Mo

AISI-440C

0.95-1.2

<1.0

<0.1

<0.04

<0.03

1.6-18

<0.75

VIBRATION AND NOISE

The vibration and noise of bearings are classified as four classes as Z1, Z2, Z3Z4.1t is measured by the instrument of S0910-1, For special requirement, it is measured by BVT-1 and classified as , V2 ,V3and V4.’ The data are shown as below, Customer, Customer need mark the requirement of vibration and noise

TOLERANCE DATA FOR VIBRATION OF SINGLE BEARING

MAXIMUM VIBRATION ACCELERATION OF SINGLE BEARING

d mm	V			V1			V2			V3			V4
d mm	Low Brand	Medium Brand	High Brand	Low Brand	Medium Brand	High Brand	Low Brand	Medium Brand	High Brand	Low Brand	Medium Brand	High Brand	Low Brand	Medium Brand	High Brand
3,4	80	44	44	60	35	32	48	26	22	31	16	15	28	10	10
5,6	110	72	60	74	48	40	58	36	30	35	21	18	32	11	11
7,8,9	130	96	80	92	66	54	72	48	40	44	28	24	38	12	122
10,12	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	25	25
20	260	190	150	180	125	100	130	100	75	86	60	45	60	25	25
22,25	260	190	150	180	125	100	130	100	75	80	60	45	60	30	32
28	260	195	150	180	125	100	130	100	75	80	60	45	60	35	40
30,32	3000	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	150	130	110	90	60	80	82	60	60
50	420	320	320	280	200	200	160	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

RETAINERS-SIZUOKA standard bearing retainers are made from cold rolled carbon steel however,in cases of corrosive environment, misalignment, or high speed operation, stainless stell, nylons,or phenolic resins will be used upon request.

SIZUOKJA	ISO
ABEC-1	NOMAL CLASS
ABEC-3	CLASS 6 (P6)
ABEC-5	CLASS 5 (P5)
ABEC-7	CLASS 4 (P4)

Steel No.	Chemical composition %
	C	Si	Mn	P	S	Cr	Mo
SAE 521000
	0.98-11	0.15-0.3	0.25-0.45	<0.025	<0.025	1.3-1.6	－

d mm	Diameter Series(0)				Diameter Series(2)					Diameter Series(3)
d mm	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	40	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	47	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	53	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