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Process of manufacturing bearing

admin — Thu, 23 Feb 2012 04:37:46 +0000

Bearing Classes By Standard

admin — Thu, 23 Feb 2012 04:28:24 +0000

Types		Standard	Precision Degree
Deep Groove Ball Bearing		GB307	0		6	5	4	2
Angular Contact Ball Bearing			0		6	5	4	2
Aligning Ball Bearing			0
Cylindrical Roller Bearing			0		6	5	4	2
Taper Roller Bearing	Metric(Single Row)	GB307	0	6	6	5	4
	Metriv(Double&Four Row)	SB/T5341994	0
	Inch	SB/CO/T1089	Class4		Class2	Class3	Class0	Class00
Spherical Roller Bearing		GB307	0
Thrust Ball Bearing			0		6	5	4
Thrust Spherical Roller Bearing			0

GB/T30794 Standard divides bearing degree into G E D C B.ISO,JIS Standard as belows:
Standard	Precision
GB/T30794	B	C	D	E	G
ISO	CLASS2	CLASS4	CLASS5	CLASS6	NORMAL CLASS
DIN	P2	P4	P5	P6	P0
ANSI	ABEC9	ABEC7	ABEC5	ABEC3	ABEC1
JIS	JIS2	JIS4	JIS5	JIS6	JIS0



ANSI Standard 20	ISO 492	DIN 620
ABEC 1	Class Normal	P0
ABEC 3	Class 6	P6
ABEC 5	Class 5	P5
ABEC 7	Class 4	P4
ABEC 9	Class 2	P2

Basic bearing type,dimension code and bearing code

admin — Tue, 21 Feb 2012 04:45:09 +0000

Bearing Type		Bearing Designation	Dimension Code	Basic code
Dounle row angular contact ball bearing		（0）（0）	32 33	3200 3300
Self-aligning ball bearing		1 （1） 1 （1）	（0）2 22 （0）3 23	1200 2200 1300 2300
Spherical roller bearing		2 2 2 2 2 2 2 2	13 22 23 30 31 32 40 41	21300 22200 22300 23000 23100 23200 24000 24100
Thrust spherical roller bearing		2 2 2	92 93 94	29200 29300 29400
Taper Roller Bearing	Taper roller bearing	3 3 3 3 3 3 3 3 3 3	02 03 13 20 22 23 29 30 31 32	30200 30300 31300 32000 32200 32300 32900 33000 33100 33200
	Doule row taper roller Bearing(Double inner ring)	35 35 35 35 35 35 35 35	29 19 20 10 21 11 22 13	352900 351900 352000 351000 352100 351100 352200 351300
	Four row taper roller bearing	38 38 38 38 38 38	29 19 20 10 21 11	382900 381900 382000 381000 382100 381100
Double row deep groove ball bearing		4 4	(2)2 (2)3	4200 4300
Thrust Ball Bearing	Thrust ball bearing	5 5 5 5	11 12 13 14	51100 51200 51300 51400
	Double direction Thrust ball bearing	5 5 5	22 23 24	52200 52300 52400
	Thrust ball bearings, single direction, sphered housing washer	5 5 5	32 33 34	53200 53300 53400
	Thrust ball bearings, double direction, sphered housing washers	5 5 5	42 43 44	54200 54300 54400
	Axial angular contact ball bearing	56	-	560000
	Double direction Axial angular contact ball bearing	23 23 23	44 47 49	234400 234700 234900
Deep Groove Ball Bearing	Deep groove ball bearing	6 6 6 6 16 6 6 6 6	17 37 18 19 （0）0 （1）0 （0）2 （0）3 （0）4	61700 63700 61800 61900 16000 6000 6200 6300 6400
Deep Groove Ball Bearing	Deep groove ball bearings with filling slots	（6）	（0）2 （0）3	200 300
Angular Contact Ball Bearing	Angular contact ball bearing	7 7 7 7 7	19 （1）0 （0）2 （0）3 （0）4	71900 7000 7200 7300 7400
	Locking in the inner ring Angular contact ball bearings	B7	(1)0 (0)2 (0)3	B7000 B7200 B7300
	Separable Angular contact ballbearing	S7	19 (1)0 (0)2 (0)3	S71900 S7000 S7200 S7300
	Four point angular contact Ball bearing	QJ	10 (0）2 （0）3	QJ1000 QJ200 QJ300
Thrust Roller Bearing	Thrust roller bearing	8 8	11 12	81100 81200
	Double and Multi row Thrust roller bearing	8 8 8	93 74 94	89300 87400 89400
	Double direction Thrust roller bearing	8 8	22 23	82200 82300
Thrust taper roller bearing		9	-	90000
Cylindrical Roller Bearing	Without flanges on the Outer ring	N	10 (0)2 22 (0)3 23 (0)4	N1000 N200 N2200 N300 N2300 N400
	Without flanges on the Inner ring	NU	10 (0)2 22 (0)3 23 (0)4	NU1000 NU200 NU2200 NU300 NU2300 NJ400
	One integral flange on The inner ring	NJ	(0)2 22 (0)3 23 (0)4	NJ200 NJ2200 NJ300 NJ2300 NJ400
	the inner ring one integral flange and one non-integral flange in the form of a loose flange ring	NUP	(0)2 22 (0)3 23	NUP200 NUP2200 NUP300 NUP2300
	The outer ring one internal flange and a loose flange ring	NF	(0)2 (0)3 23	NF200 NF300 NF2300
	Double row cylindrical roller bearing	NN	30 49	NN3000 NN4900
	Inner ring without flanges double row Cylindrical roller bearing	NNU	49	NNU4900

How to measure a bearing

admin — Tue, 21 Feb 2012 03:50:23 +0000

Bearing Sizes

Each bearing has an inside diameter, outside diameter and width diameter in that order. Most bearings are metric in size, but can also be imperial. On our site, each bearing shows its principal dimensions.

d = Inside diameter
D = Outside diameter
B/T = Width diameter

You can search for a bearing entering this information on the home page in the boxes provided.

Once you have identified the bearing’s code some bearings come complete with seals or shields. This is known as the suffix in the bearings reference.

Bearing Example

6205 2RS1C3

The bearing type design that you need is a single row deep groove ball bearing with the following dimensions and suffix.

d = 25mm
D = 52mm
B/T = 15mm

Result = 6205

The bearing also has a seal either side of the bearing.

2RS1 = 2 Rubber seals
2RSR = 2 Rubber seals
DDU = 2 Rubber seals
2Z = 2 Metal shields
ZZ = 2 Metal Shields

Result = 6205 2RS1

And the internal clearance being C3 means that the bearing has room for expansion if needed between the races of the bearing, whilst holding the outer ring and moving the inner ring in a radial movement you will detect a little amount of play between the 2 rings. All standard clearance bearings have this movement, it may only be a small amount of movement but is controlled by international standards. C3 means the bearing has more clearance than standard.

For example we may use C3 clearance on bearings where a cold start up application my cause the balls to heat up quickly, the heat needs to go somewhere. Some of the heat gets passed through the outer race to the housing and the inner race to the shaft, this causes expansion which closes up the clearance in the bearing. If you did not allow for this clearance the bearing would not have room for expansion and lead to bearing failure.

C2 = Clearance less than normal
C3 = Clearance greater than normal
C4 = Clearance greater than C3

Result = 6205 2RS1C3

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admin — Mon, 19 Sep 2011 15:11:55 +0000

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