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NINGBO DONGHUANG BEARING CO.,LTD.

Province/State:zhejiang

Country/Region:china

Contact Person:MrHu

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High Precision Auto Repair Wheel Bearings Heat Resistance Automotive Wheel Bearing

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Brand Name :VCD

Model Number :608 ZZ/6004 ZZ/6003 ZZ

Certification :ISO9001:2000

Place of Origin :Cixi,Ningbo,Zhejiang,China

MOQ :5000

Delivery Time :30 working days

Packaging Details :Industrial plastic tube packing

Tolerance :ABEC-3

Noise Class :Z3V3 and Z4V4

Steel Balls Class :G10 or G5

Cages :Steel Made

Rubber Seals :NBR or FKM or ACM

name :auto parts wheel bearing

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Main production:

Deep Groove Ball Bearing / Angular Contact Ball Bearing/ Taper Roller Bearing/ Spherical Roller Bearing /Cylindrical Roller Bearing / Thrust Ball Bearing /Thrust Roller Bearing /Self-aligning ball bearing/Self-aligning roller bearing/Pillow Block Bearing /Needle Roller Bearing /Tracking Roller Bearing/ Auto Bearing Etc.

Production process:

1. Abrasive machining of steel pipe;

2. The inner & outer ring grinding;

3. The precision work of inner ring & outer ring

4. Bearing cleaning;

5. The Assembly of inner ring , outer ring , bearing balls & cage, etc.

6. Bearing inspection( precison, noise & vibration levels).

7. Packing: in plastic tube, then in carton & pallet or in color single box, then in carton & pallet, or as the customers' request.

Bearing Seal

Bearing seal form into dust cover and plastic material seal. There are various types of seal. Because of different seal material, bearing to adapt condition will also change.

Name Code	Characteristics	Using Temperature
NBR Acrylonitrile-butadiene rubber	Oil resistance,heat resistance,resistance to wear	-40~120
FKM Fluorine rubber	Hear resistant,acid and alkali resistant and chemicals, oil resistance preferred	-20~200
VMQ Silicone rubber	Heat and cold resistance, good compression deformation is small, but the mechanical strength is not good	-60~230
ACM Polypropylene acid ester rubber	Heat resistance, oil resistance better than NBR, but resistance to water and alkali is not strong	-20~150

The size of bearing clearance directly related to the use of noise, vibration, normal temperature, service life and the assembly of machinery motion effect. Therefore, it is very important that we choose the suitable assembly bearing clearance. We divided from small to big according to radial clearance range into C2, C0, C3, C4 and C5. Specific reference see the chart:

Bore				C2		C0		C3		C4		C5
Over		Including		C2		C0		C3		C4		C5
mm	Inch	mm	Inch	Min	Max	Min	Max	Min	Max	Min	Max	Min.	Max
2.5	0.0984	10	0.3937	0	7	2	13	8	23	14	29	20	37
10	0.3937	18	0.7087	0	9	3	18	11	25	18	33	25	45
18	0.7887	24	0.9449	0	10	5	20	13	28	20	36	28	48
24	0.9449	30	1.1811	1	11	5	20	13	28	23	41	30	53
30	1.1811	40	1.5748	1	11	6	20	15	33	28	46	40	64
40	1.5748	50	1.9685	1	11	6	23	18	36	30	51	45	73
50	1.9685	65	2.5591	1	15	8	28	23	43	38	61	55	90

Also can consult the table below choose bearing clearance

The usage situation	Use examples	Choose clearance
Strict control noise, vibration installation precision, high position	Instrument and equipmentRoll neck calender Low noise and small motor	C2,C0
General load, speed, working temperature is not high	Transmission machinery, reducer and other general machinery	C0
High temperature, high speed, high requirements for service life	Automobile generator and engine	C3
Using high temperature environment, should not be the occasion of heat	Drying machine, paper making machinery, and so on	C3,C4
High temperature, high speed, and large impact load	Vibrating screen, speed gear	C4
Inner and outer ring take the surplus interference, large volume, high temperature, heat dissipation	Vibration type pressure road, machine car rear wheel	C5

Vibration tolerance date of single bearing Tolerance um/s

Bore diancter	V			V1			V2			V3			V4
MM	L	M	H	L	M	H	L	M	H	L	M	H	L	M	H
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	12
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	80	60	45	60	25	25
22,25	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
30,32	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

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