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	Deep Groove Ball Bearings
	Self-aligning Ball Bearings
	Cylindrical Roller Bearings
	Spherical Roller Bearings
	Needle Roller Bearings
	Angular Contact Ball Bearings
	Tapered Roller Bearings
	Thrust Ball Bearings
	Thrust Roller Bearings
	Railway Bearings
	Slewing Bearings

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Equivalent Designations of LYC bearings
Radial Internal Clearances in Deep Groove Ball Bearings
Radial Internal Clearances of Self-aligning Ball Bearings with Cylindrical bore
Radial Internal Clearances of Self-aligning Ball Bearings with tapered bore
Radial Internal Clearances in Cylindrical Roller Bearings with Cylindrical bore
Radial Internal Clearances in Spherical Roller Bearings with Cylindrical bore
Radial Internal Clearances of Spherical Roller Bearings with tapered bore
LYC Bearing Noise and Vibration Level Accelerator
ANSI/AFBMA Standard for Steel Ball
Prefix and suffix of LYC bearings
Tolerance class of LYC bearings
Materials and chemical composition of LYC bearings
Bearing damage analysis

Equivalent Designations of LYC bearings

LYC (China)	ASTM(USA)	DIN(GERMANY)	JIS(JAPAN)
GCr15	AISI 52100	DIN100Cr6	JIS SUJ2
GCr15SiMn		DIN100CrMn6
G20CrNi2Mo	AISI 4320		JIS SNCM415
G20Cr2Ni4	AISI 3316
50Mn	AISI C1050
42CrMo	AISI 4140	DIN 42CrMo4	JIS SCM 440

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Radial Internal Clearances in Deep Groove Ball Bearings

Radial Internal Clearances in Deep Groove Ball Bearings

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
Over	Incl.	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	20	48
24	30	1	11	5	20	13	28	23	41	30	53
30	40	1	11	6	20	15	33	28	46	40	64
40	50	1	11	6	23	18	36	30	51	45	73
50	65	1	15	8	28	23	43	38	61	55	90
65	80	1	15	10	30	25	51	46	71	65	105
80	100	1	18	12	36	30	58	53	84	75	120
100	120	2	20	15	41	36	66	61	97	90	140
120	140	2	23	18	48	41	81	71	114	105	160
140	160	2	23	18	53	46	91	81	130	120	180
160	180	2	25	20	61	53	102	91	147	135	200
180	200	2	30	25	71	63	117	107	163	150	230
200	225	2	35	25	85	75	140	125	195	175	265
225	250	2	40	30	95	80	160	145	225	205	300
250	280	2	45	35	105	90	170	155	245	225	340
280	315	2	55	40	115	100	190	175	270	245	370
315	355	3	60	45	125	110	210	195	300	275	410
355	400	3	70	55	140	130	140	225	340	315	460
400	450	3	80	60	170	150	270	250	380	350	510
450	500	3	90	70	190	170	300	280	420	390	570
500	560	10	100	80	210	190	330	310	470	440	630
560	630	10	110	90	230	210	360	340	520	490	690
630	710	20	130	110	260	240	400	380	570	540	760
710	800	20	140	120	290	270	450	430	630	600	840
800	900	20	160	140	320	300	500	480	700	670	940
900	1000	20	170	150	350	330	550	530	770	740	1040
1000	1120	20	180	160	380	360	600	580	850	820	1150
1120	1250	20	190	170	410	390	650	630	920	890	1260

Radial Internal Clearances of Self-aligning ball Bearings with cylindrical bore (um)

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
over	incl.	min	max	min	max	min	max	min	max	min	max
10	14	2	10	6	19	13	26	21	35	30	48
14	18	3	12	8	21	15	28	23	37	32	50
18	20	4	14	10	23	17	30	25	39	34	52
24	30	5	16	11	24	19	35	29	46	40	58
30	40	6	18	13	29	23	40	34	53	46	66
40	50	6	19	14	31	25	44	37	57	50	71
50	65	7	21	16	36	30	50	45	69	62	88
65	80	6	24	18	40	35	60	54	83	76	108
60	100	9	27	22	48	42	70	64	96	89	124
100	120	10	31	25	56	50	83	75	114	105	145
120	140	10	38	30	68	60	100	90	135	125	175
140	160	15	44	35	80	70	120	110	161	150	210

Radial Internal Clearances of Self-aligning ball Bearings with tapered bore (um)

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
over	incl.	min	max	min	max	min	max	min	max	min	max
18	24	7	17	13	26	20	33	28	42	37	55
24	30	9	20	15	28	23	39	33	50	44	62
30	40	12	24	19	35	29	46	40	59	52	72
40	50	14	27	22	39	33	52	45	65	58	79
50	65	18	32	27	47	41	61	56	80	73	99
65	80	23	39	35	57	50	75	69	98	91	123
80	100	29	47	42	68	62	90	84	116	109	144
100	120	135	56	50	81	75	108	100	139	130	170
120	140	40	68	60	98	90	130	120	165	155	205
140	160	45	74	65	110	100	150	140	191	180	240

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Radial Internal Clearances of Self-aligning Ball Bearings with Cylindrical bore

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
over	incl.	min	max	min	max	min	max	min	max	min	max
10	14	2	10	6	19	13	26	21	35	30	48
14	18	3	12	8	21	15	28	23	37	32	50
18	20	4	14	10	23	17	30	25	39	34	52
24	30	5	16	11	24	19	35	29	46	40	58
30	40	6	18	13	29	23	40	34	53	46	66
40	50	6	19	14	31	25	44	37	57	50	71
50	65	7	21	16	36	30	50	45	69	62	88
65	80	6	24	18	40	35	60	54	83	76	108
60	100	9	27	22	48	42	70	64	96	89	124
100	120	10	31	25	56	50	83	75	114	105	145
120	140	10	38	30	68	60	100	90	135	125	175
140	160	15	44	35	80	70	120	110	161	150	210

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Radial Internal Clearances of Self-aligning Ball Bearings with tapered bore

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
over	incl.	min	max	min	max	min	max	min	max	min	max
18	24	7	17	13	26	20	33	28	42	37	55
24	30	9	20	15	28	23	39	33	50	44	62
30	40	12	24	19	35	29	46	40	59	52	72
40	50	14	27	22	39	33	52	45	65	58	79
50	65	18	32	27	47	41	61	56	80	73	99
65	80	23	39	35	57	50	75	69	98	91	123
80	100	29	47	42	68	62	90	84	116	109	144
100	120	135	56	50	81	75	108	100	139	130	170
120	140	40	68	60	98	90	130	120	165	155	205
140	160	45	74	65	110	100	150	140	191	180	240

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Radial Internal Clearances in Cylindrical Roller Bearings with Cylindrical bore

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
over	incl.	min	max	min	max	min	max	min	max	min	max
	10	0	25	20	45	35	60	50	75	--	--
10	24	0	25	20	45	35	60	50	75	65	90
24	30	0	25	20	45	35	60	50	75	70	95
30	40	5	30	25	50	45	70	60	85	85	105
40	50	5	35	30	60	50	80	70	100	95	125
50	65	10	40	40	70	60	90	80	110	110	140
65	80	10	45	40	75	65	100	90	125	130	165
80	100	15	50	50	85	75	110	105	140	155	190
100	120	15	55	50	90	85	125	125	165	180	220
120	140	15	60	60	105	100	145	145	190	200	2454
140	160	20	70	70	120	115	165	165	215	225	275
160	180	25	75	75	125	120	170	170	220	250	300
180	200	35	90	90	145	140	195	195	250	275	330
200	225	45	105	105	165	160	220	220	280	305	365
225	250	45	110	110	175	170	235	235	300	330	395
250	280	55	125	125	195	190	260	260	330	370	440
280	315	55	130	130	205	200	275	275	350	410	485
315	355	65	145	145	225	225	305	305	385	455	535
355	400	100	190	190	280	280	370	370	460	510	600
400	450	110	210	210	310	310	410	410	510	565	665
450	500	110	220	220	330	330	440	440	550	625	735

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Radial Internal Clearances in Spherical Roller Bearings with Cylindrical bore

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
over	incl.	min	max	min	max	min	max	min	max	min	max
14	18	10	20	20	35	35	45	45	60	60	75
18	24	10	20	20	35	35	45	45	60	60	75
24	30	15	25	25	40	40	55	55	75	75	95
30	40	15	30	30	45	45	60	60	80	80	100
40	50	20	35	35	55	55	75	75	100	100	125
50	65	20	40	40	65	65	90	90	120	120	150
65	80	30	50	50	80	80	110	110	145	145	180
80	100	35	60	60	100	100	135	135	180	180	225
100	120	40	75	75	120	120	160	160	210	210	260
120	140	50	95	95	145	145	190	190	240	240	300
140	160	60	110	110	170	170	220	220	280	280	350
160	180	65	120	120	180	180	240	240	310	310	390
180	200	70	130	130	200	200	260	340	340	430	430
200	225	80	140	140	220	220	290	380	380	470	470
225	250	90	150	150	240	240	320	320	420	420	520
250	280	100	170	170	260	260	350	350	460	460	570
280	315	110	190	190	280	280	370	370	500	500	630
315	355	120	200	200	310	310	410	550	550	690	690
355	400	130	220	220	340	340	450	450	600	600	750
400	450	140	240	240	370	370	500	500	660	660	820
450	500	140	260	260	410	410	550	550	720	720	900
500	560	150	280	280	440	440	600	600	780	780	1000
560	630	170	310	310	480	480	650	650	850	850	1100
630	710	190	350	350	530	530	700	700	920	920	1190
710	800	210	390	390	580	580	770	770	1010	1010	1300
800	900	230	430	430	650	650	860	860	1120	1120	1440
900	1000	260	480	480	710	710	930	930	1220	1220	1570
1000	1120	290	530	530	780	780	1020	1020	1330	1330	1720
1120	1250	320	580	580	860	860	1120	1120	1460	1460	1870
1250	1400	350	640	640	950	950	1240	1240	1620	1620	2080

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Radial Internal Clearances of Spherical Roller Bearings with tapered bore

Nominal bore diameter d (mm)		C2		Normal		C3		C4		C5
over	incl.	min	max	min	max	min	max	min	max	min	max
18	24	15	25	75	35	35	45	45	60	60	75
24	30	20	30	30	40	40	55	55	75	75	95
30	40	25	35	35	50	50	65	65	85	85	105
40	50	30	45	45	60	60	80	80	100	100	130
50	65	40	55	55	75	75	95	95	120	120	160
65	60	50	70	70	95	95	120	120	150	150	200
90	100	55	80	80	110	110	140	140	180	180	230
100	120	65	100	100	135	135	170	170	220	220	260
120	140	80	120	120	160	160	200	200	260	260	330
140	160	90	130	130	180	180	230	230	300	300	380
160	180	100	140	140	200	200	260	260	370	340	430
180	200	110	160	160	220	220	290	290	370	370	470
200	225	120	180	180	250	250	320	320	410	410	520
225	250	140	200	200	270	270	350	350	450	450	570
250	280	150	220	220	300	300	390	390	490	490	620
280	315	170	240	240	330	330	430	430	540	540	680
315	355	190	270	270	360	360	470	470	590	590	740
355	400	210	300	300	400	400	520	520	650	560	820
400	450	230	330	330	440	440	570	570	720	720	910
450	500	260	370	370	490	490	630	630	790	790	1000
500	560	290	410	410	540	540	680	680	870	670	1100
560	630	320	460	460	600	600	780	760	900	980	1230
630	710	350	510	510	670	670	850	850	1090	1090	1360
710	800	390	570	570	750	750	960	960	1220	1220	1500
800	900	440	640	640	840	640	1070	1070	1370	1370	1690
900	1000	490	710	710	930	330	1190	1190	1520	1520	1860
1000	1120	530	770	770	1030	30	1300	1300	1670	1670	2050
1120	1250	570	830	830	1120	120	1420	1420	1830	1830	2250
1250	1400	620	910	910	1230	230	1560	1560	2000	2000	2470

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LYC Bearing Noise and Vibration Level Accelerator

Nominal bore diameter d (mm)	Single Bearing Vibration Reading (dB) not exceed
	6000 Series			6200 Series				6300 Series
	Z	Z1	Z2	Z	Z1	Z2	Z3	Z	Z1	Z2	Z3
3	35	34	32	36	35	32	30	37	36	33	31
4	35	34	32	36	35	32	30	37	36	33	31
5	37	36	34	38	37	34	32	39	37	35	33
6	37	36	34	38	37	34	32	39	37	35	33
7	39	38	35	40	38	36	34	--	--	--	--
8	39	38	35	40	38	36	34	--	--	--	--
9	41	40	36	42	40	37	35	--	--	--	--
10	43	42	38	44	42	39	35	46	44	40	37
12	44	43	39	45	43	39	35	47	45	40	37
15	45	44	40	46	44	41	36	48	46	42	38
17	46	44	40	47	45	41	36	49	47	42	38
20	47	45	41	48	46	42	38	50	48	43	39
25	48	46	42	49	47	43	40	51	49	44	41
30	49	47	43	50	48	44	41	52	50	45	42
35	51	49	45	52	50	46	43	54	52	47	44
40	53	51	46	54	52	47	44	56	54	49	45
45	55	53	48	56	54	49	46	58	56	51	47
50	57	54	50	58	55	51	48	60	57	53	49
55	59	52	60	57	53	50	62	59	54	51
60	61	58	54	62	59	54	51	64	61	56	53
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