Cixi Yuanda Bearing Co.,Ltd.

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Linkman：Hongquan Hu
M.T.:13306741884
Tel:086-574-63198447
086-574-56335512
086-574-56335521
Fax:086-574-63199437
P.C:315318
Http://www.yuanda-bearing.com
Email:hhq@yuanda-bearing.com

PRODUCTS>>Technology

The Refinement Of Bearing
the refinement of bearing means the refinement of size and rotation. The difference of international refinement as following:

Normal cymbal	Grade of refinement
China GB	0	6	5	4
ISO	0	6	5	4
ANSI	ABEC1	ABEC3	ABEC5	ABEC7
SKF	P0	P6	P5	P4
DIN	P0	P6	P5	P4
JIS	0	6	5	4

steel/steel ball/material
The carbon chrome is the best material in bearings. It has high hardness, rolling-beard tireless, abrasion bearing and size stable.
The element of Gcr15:

The content of the element (wt%)	C 0.95-1.05	Cr 1.40-1.65	Si 0.15-0.35	Mn 0.25-0.45	P <0.027	S 0.02
The content of the element (wt%)	Ni < 0.23	Cu <0.25	Mo <0.1	Sn <0.03	As <0.04	Ti <0.005
The content of the element (wt%)	Sb <0.002	Pb <0.002	O <0.001	Ai <0.05	Ca <0.01

Bearing Radial Play
The radial play of bearing is divided into five groups according to ISO 5753. The radial play without per-load is shown on table. The bearings are normally assembled according to basic group of play, Customer need to mark on your purchase order for any special radial plsy.
The radial play of deep bearing

Bore diameter		Group 2		Standard group		Group 3		Group 5		Group 5
Over	To	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.
2.5	6	0	7	2	13	8	23	-	-	-	-
6	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	0	11	5	20	13	28	23	41	30	53

Vibration And Noise

Tolerance data for vibration of single bearing

tolerance in um/s

d mm	V			V1			V2			V3
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
5 6 7 8 9 10 12 15 17 20 22 25 28 30 32 35 40 45 50 55 60	110 110 130 130 130 160 160 210 210 260 260 260 260 300 300 300 360 360 420 420 480	72 72 96 96 96 120 120 150 150 190 190 190 190 240 240 240 300 300 320 360 360	60 60 80 80 80 100 100 120 120 150 150 150 150 190 190 190 260 260 320 360 440	90 90 110 110 110 140 140 180 180 220 220 220 220 250 250 250 300 300 350 350 400	60 60 80 80 80 100 100 130 130 160 160 160 160 200 200 200 250 250 270 300 300	50 50 65 65 65 85 85 100 100 125 125 125 125 160 160 160 220 220 270 300 370	58 58 72 72 72 90 90 110 110 130 130 130 130 150 150 150 180 180 210 210 240	36 36 48 48 48 60 60 78 78 100 100 100 100 120 120 120 150 150 160 180 180	30 30 40 40 40 50 50 60 60 75 75 75 75 100 100 100 130 130 160 180 220	35 35 44 44 44 55 55 65 65 80 80 80 80 90 90 90 110 110 125 125 145	21 21 28 28 28 35 35 46 46 60 60 60 60 75 75 75 90 90 110 110 110	18 18 24 24 24 30 30 35 35 35 45 45 45 60 60 60 80 80 100 110 130

Maximum vibration acceleration of single bearing

tolerance in dB

d mm	Diameter serises(0)				Diameter serises(2)					Diameter serises(3)
d mm	Z	Z₁	Z₂	Z₃	Z	Z₁	Z₂	Z₃	Z₄	Z	Z₁	Z₂	Z₃	Z₄
3 4 5 6 7 8 9 10 12 15 17 20 22 25 28 30 32 35 40 45 50 55 60	35 35 37 37 39 39 41 43 44 45 46 47 47 48 49 49 50 51 53 55 57 59 61	34 34 36 36 38 38 40 42 43 44 44 45 45 46 47 47 48 49 51 53 54 56 58	32 32 34 34 35 35 36 38 39 40 40 41 41 42 43 43 44 45 46 48 50 52 54	28 28 30 30 31 31 32 33 34 35 35 36 36 38 39 39 40 41 42 45 47 49 51	36 36 38 38 40 40 42 44 45 46 47 48 48 49 50 50 54 52 54 56 58 60 62	35 35 37 37 38 38 40 42 43 44 45 46 46 47 48 48 49 50 52 54 55 57 59	32 32 34 34 36 36 37 39 39 41 41 42 42 43 44 44 46 46 47 49 51 53 54	30 30 32 32 34 34 35 35 35 36 36 38 38 40 41 41 42 43 44 46 48 50 51	- - - - - - - 30 30 31 31 33 33 36 37 37 38 39 40 43 46 47 48	37 37 39 39 - - - 46 47 48 49 50 50 51 52 52 53 54 56 58 60 62 64	36 36 37 37 - - - 44 45 46 47 48 48 49 50 50 51 52 54 56 57 59 61	33 33 35 35 - - - 40 40 42 42 43 43 44 45 45 46 47 49 51 53 54 56	31 31 33 33 - - - 37 37 38 38 39 39 41 42 42 43 44 45 47 49 51 53	- - - - - - - 32 32 33 33 34 34 37 38 38 39 40 40 44 46 48 50