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Nominal shaft dia. mm	Resin retainer		Eccentricity μm	Squareness μm	Basic load rating
	Square flange type LMK…UU	Weight (gf)			Dynamic C N	Static Co N
6	LMK6UU	18	12	12	206	265
8	LMK8SUU	24			176	216
8	LMK8UU	29			274	392
10	LMK10UU	52			372	549
12	LMK12UU	57			510	784
13	LMK13UU	72			510	784
16	LMK16UU	104			774	1180
20	LMK20UU	145	15	15	882	1370
25	LMK25UU	300			980	1570
30	LMK30UU	375			1570	2740
35	LMK35UU	560	20	20	1670	3140
40	LMK40UU	880			2160	4020
50	LMK50UU	2,000			3820	7940
60	LMK60UU	2,560	25	25	4700	10000
80	LMK80UU	5,300			7350	16000
100	LMK100UU	9,900	30	30	14100	34800

###

Major dimensions and tolerance(T)
mm	dr	mm	D	mm	L	Flange
	Tolerance μm		T μm		T μm	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
6	0 -9	12	0 -11	19	±300	28	22	5	20	3.5	6	3.1
8		15		17		32	25	5	24	3.5	6	3.1
8		15		24		32	25	5	54	3.5	6	3.1
10		19	0 -13	29	0 -200	40	30	6	29	4.5	7.5	4.1
12		21		30		42	32	6	32	4.5	7.5	4.1
13		23		32		43	34	6	33	4.5	7.5	4.1
16		28		37		48	37	6	38	4.5	7.5	4.1
20	0 -10	32	0 -16	42		54	42	8	43	5.5	9	5.1
25		40		59	0 -300	62	50	8	51	5.5	9	5.1
30		45		64		74	58	10	60	6.6	11	6.1
35	0 -12	52	0 -19	70		82	64	10	67	6.6	11	6.1
40		60		80		96	75	13	78	9	14	8.1
50		80		100		116	92	13	98	9	14	8.1
60	0 -15	90	0 -22	110		134	106	18	112	11	17	11.1
80		120		140	0 -400	164	136	18	142	11	17	11.1
100	0 -20	150	0 -25	175		200	170	20	175	14	20	13.1

###

Nominal shaft dia. mm	Square flange type LMEF…UU	Weight (gf)	Eccentricity µ m	Squareness µ m	Basic load rating
					Dynamic C N	Static Co N
5	LMEK5UU	20	12	12	206	265
8	LMEK8UU	33			265	402
12	LMEK12UU	64			510	784
16	LMEK16UU	90			578	892
20	LMEK20UU	147	15	15	862	1,370
25	LMEK25UU	295			980	1,570
30	LMEK30UU	465			1,570	2,740
40	LMEK40UU	975	17	17	2,160	4,020
50	LMEK50UU	1545			3,820	7,940
60	LMEK60UU	2780	20	20	4,700	9,800
80	LMEK80UU	5920			7,350	16,000

###

Major dimensions and tolerance
mm	dr	mm	D	mm	L	Flange
	Tolerance µ m		Tolerance µ m		Tolerance µ m	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
5	+8 0	12	0 -8	22	±300	28	22	5	20	3.5	6	3.1
8		16		25		32	25	5	24	3.5	6	3.1
12		22	0 -9	32	0 -200	42	32	6	32	4.5	7.5	4.1
16	+9 -1	26		36		46	35	6	36	4.5	7.5	4.1
20		32	0 -11	45		54	42	8	43	5.5	9	5.1
25	+11 -1	40		58	0 -300	62	50	8	51	5.5	9	5.1
30		47		68		76	60	10	62	6.6	11	6.1
40	+13 -2	62	0 -13	80		98	75	13	80	9	14	8.1
50		75		100		112	88	13	94	9	14	8.1
60		90	0 -15	125	0 -400	134	106	18	112	11	17	11.1
80	+16 -4	120		165		164	136	18	142	11	17	11.1

###

Nominal shaft dia. inch/mm	Square flange type LMBK…UU	Weight (gf)	Eccentricity inch/µm	Squareness inch/µm	Basic load rating
					Dynamic C N	Static Co N
1/4 6.350	LMBK4UU	25	0.0005 12	0.0005 12	206	265
3/8 9.525	LMBK6UU	32			225	314
1/2 12.700	LMBK8UU	68			510	784
5/8 15.875	LMBK10UU	124			774	1,180
3/4 19.050	LMBK12UU	150	0.0006 15	0.0006 15	862	1,370
1 25.400	LMBK16UU	280			980	1,570
1-1/4 31.750	LMBK20UU	580	0.0008 20	0.0008 20	1,570	2,740
1-1/2 38.100	LMBK24UU	930			2,180	4,020
2 50.800	LMBK32UU	1580	0.0010 25	0.0010 25	3,820	7,940
2-1/2 63.500	LMBK40UU	3200			4,700	10,000
3 76.200	LMBK48UU	5000			7,350	16,000
4 101.600	LMBK64UU	11300	0.0012 30	0.0012 30	14,100	34,800

###

Major dimensions and tolerance
inch mm	dr	inch mm	D	inch mm	L	Flange
	Tolerance inch/µm		Tolerance inch/µm		Tolerance inch/µm	Df inch mm	K inch mm	t inch mm	Dp inch mm	X inch mm	Y inch mm	Z inch mm
0.2500 6.350	0 -0.00040 0 -9	0.5000 12.700	0 -0.00045 0 -11	0.7500 19.050	±0.012 ±300	1.2500 31.750	1.0000 25.400	0.219 5.556	0.8750 22.225	0.1560 3.969	0.2500 6.350	0.1410 3.572
0.3750 9.525		0.6250 15.875	0 -0.00050 0 -13	0.8750 22.225		1.5000 38.100	1.2500 31.750	0.2500 6.350	1.0620 26.988	0.1875 4.763	0.2970 7.541	0.1720 4.366
0.5000 12.700		0.8750 22.225		1.2500 31.750	0 -0.008 0 -200	1.7500 44.450	1.3750 34.925	.2500 6.350	1.312 33.338	0.1875 4.763	0.2970 7.541	0.1720 4.366
0.6250 15.875		1.1250 28.575		1.500 38.100		2.0000 50.800	1.5000 38.100	0.2500 6.350	1.5620 39.688	0.1875 4.763	0.2970 7.541	0.1720 4.366
0.7500 19.050	0 -0.00040 0 -10	1.2500 31.750	0 -0.00065 0 -16	1.6250 41.275		2.1875 55.563	1.6875 42.863	0.3125 7.938	1.7180 43.660	0.2187 5.556	0.3440 8.731	0.2030 5.159
1.0000 25.400		1.5625 39.688		2.2500 57.150	0 -0.012 0 -300	2.5000 63.500	2.0000 50.800	0.3125 7.938	2.0310 51.594	0.2187 5.556	0.3440 8.731	0.2030 5.159
1.2500 31.750	0 -0.00050 0 -12	2.0000 50.800	0 -0.00075 0 -19	2.6250 66.675		3.1250 79.375	2.5000 63.500	0.3750 9.525	2.5625 65.088	0.2812 7.144	0.4060 10.319	0.2656 6.747
1.5000 38.100		2.3750 60.325		3.0000 76.200		3.7500 95.250	3.0000 76.200	0.5000 12.700	3.0625 77.788	0.3440 8.731	0.5000 12.700	0.3280 8.334
2.0000 50.800		3.0000 76.200	0 -0.00090 0 -22	4.0000 101.600		4.3750 111.125	3.5000 88.900	0.5000 12.700	3.6875 93.662	0.3440 8.731	0.5000 12.700	0.3280 8.334
2.5000 63.500	0 -0.00060 0 -15	3.7500 95.250		5.0000 127.000		5.3750 136.525	4.3750 111.125	0.7500 19.050	4.5625 115.887	0.4062 10.319	0.6250 15.875	0.3750 9.525
3.0000 76.200		4.5000 114.300		6.0000 152.400	0 -0.016 0 -400	6.1250 155.575	5.0000 127.000	0.7500 19.050	5.3125 134.937	0.4062 10.319	0.6250 15.875	0.3750 9.525
4.0000 101.600	0 -0.00080 0 -20	6.0000 152.400	0 -0.00100 0 -25	8.0000 203.200		8.0000 203.200	6.7500 171.450	0.8750 22.225	7.0000 177.800	0.5000 12.700	0.7125 18.097	0.5000 12.700

###

Nominal shaft dia. mm	Square flange long type LMK…LUU	Weight (gf)	Eccentricity µm	Squareness µm	Basic load rating
					Dynamic C N	Static Co N
6	LMK6LUU	25	15	15	323	529
8	LMK8LUU	43			431	784
10	LMK10LUU	78			588	1,100
12	LMK12LUU	90			813	1,570
13	LMK13LUU	108			813	1,570
16	LMK16LUU	165			1,230	2,350
20	LMK20LUU	225	20	20	1,400	2,740
25	LMK25LUU	500			1,560	3,140
30	LMK30LUU	590			2,490	5,490
35	LMK35LUU	930	25	25	2,650	6,270
40	LMK40LUU	1380			3,430	8,040
50	LMK50LUU	3400			6,080	15,900
60	LMK60LUU	4060	30	30	7,550	20,000

###

Major dimensions and tolerance
mm	dr	mm	D	mm	L	Flange
	Tolerance µm		Tolerance µm		Tolerance µm	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
6	0 -10	12	0 -13	35	±300	28	22	5	20	3.5	6	3.1
8		15		45		32	25	5	24	3.5	6	3.1
10		19	0 -16	55		40	30	6	29	4.5	7.5	4.1
12		21		57	0 -300	42	32	6	32	4.5	7.5	4.1
13		23		61		43	34	6	33	4.5	7.5	4.1
16		28		70		48	37	6	38	4.5	7.5	4.1
20	0 -12	32	0 -19	80		54	42	8	43	5.5	9	5.1
25		40		112	0 -400	62	50	8	51	5.5	9	5.1
30		45		123		74	58	10	60	6.6	11	6.1
35	0 -15	52	0 -22	135		82	64	10	67	6.6	11	6.1
40		60		151		96	75	13	78	9	14	8.1
50		80		192		116	92	13	98	9	14	8.1
60	0 -20	90	0 -25	209		134	106	18	112	11	17	11.1

###

Nominal shaft diameter mm	Square flange long type LMEK…LUU	Weight (gf)	Eccentricity µm	Squareness µm	Basic load rating
					Dynamic C N	Static Co N
8	LMEK8LUU	51	15	15	421	804
12	LMEK12LUU	90			813	1,570
16	LMEK16LUU	135			912	1,780
20	LMEK20LUU	225	17	17	1,370	2,740
25	LMEK25LUU	500			1,570	3,140
30	LMEK30LUU	720			2,500	5,490
40	LMEK40LUU	1600	20	20	3,430	8,040
50	LMEK50LUU	2620			6,080	15,900
60	LMEK60LUU	4480	25	25	7,550	20,000

###

Major dimensions and tolerance
mm	dr	mm	D	mm	L	Flange
	Tolerance µm		Tolerance µm		Tolerance µm	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
8	+9 -1	16	0 -9	46	±300	32	25	5	24	3.5	6	3.1
12		22	0 -11	61	0 -300	42	32	6	32	4.5	7.5	4.1
16	+11 -1	26		68		46	35	6	36	4.5	7.5	4.1
20		32	0 -13	80		54	42	8	43	5.5	9	5.1
25	+13 -2	40		112	0 -400	62	50	8	51	5.5	9	5.1
30		47		123		76	60	10	62	6.6	11	6.1
40	+16 -4	62	0 -15	151		98	75	13	80	9	14	8.1
50		75		192		112	88	13	94	9	14	8.1
60		90	0 -20	209		134	106	18	112	11	17	11.1

###

Nominal shaft dia. inch/ mm	Square flange long type LMBK…LUU	Weight (gf)	Eccentricity inch/µm	Squareness inch/µm	Basic load rating
					Dynamic C N	Static Co N
1/4 6.350	LMBK4LUU	33	0.0006 15	0 .0006 15	323	530
3/8 9.525	LMBK6LUU	45			353	630
1/2 12.700	LMBK8LUU	106			813	1,570
5/8 15.875	LMBK10LUU	200			1,230	2,350
3/4 19.050	LMBK12LUU	240	0.0008 20	0.0008 20	1,370	2,740
1 25.400	LMBK16LUU	470			1,570	3,140
1-1/4 31.750	LMBK20LUU	935	0.0010 25	0.0010 25	2,500	5,490
1-1/2 38.100	LMBK24LUU	1460			3,430	8,040
2 50.800	LMBK32LUU	2620	0.0012 30	0.0012 30	6,080	15,900

###

Major dimensions and tolerance
inch mm	dr	inch mm	D	inch mm	L	Flange
	Tolerance inch µm		Tolerance inch µm		Tolerance inch µm	Df inch mm	K inch mm	t inch mm	Dp inch mm	X inch mm	Y inch mm	Z inch mm
0.2500 6.350	0 -0.00040 0 -10	0.5000 12.700	0 -0.00050 0 -13	1.3750 34.925	±0.012 ±300	1.2500 31.750	1.0000 25.400	0.219 5.556	0.8750 22.225	0.1563 3.969	0.2500 6.350	0.1406 3.572
0.3750 9.525		0.6250 15.875	0 -0.00065 0 -16	1.5938 40.481		1.5000 38.100	1.2500 31.750	0.2500 6.350	1.0620 26.988	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.5000 12.700		0.8750 22.225		2.3750 60.325	0 -0.012 0 -300	1.7500 44.450	1.3750 34.925	0.2500 6.350	1.312 33.338	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.6250 15.875		1.1250 28.575		2.8125 71.438		2.0000 50.800	1.5000 38.100	0.2500 6.350	1.5620 39.688	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.7500 19.050	0 -0.00050 0 -12	1.2500 31.750	0 -0.00075 0 -19	3.0937 78.581		2.1875 55.563	1.6875 42.863	0.3125 7.938	1.7180 43.660	0.2188 5.556	0.3439 8.731	0.2031 5.159
1.0000 25.400		1.5625 39.688		4.2831 108.744	0 -0.016 0 -400	2.5000 63.500	2.0000 50.800	0.3125 7.938	2.0310 51.594	0.2188 5.556	0.3438 8.731	0.2031 5.159
1.2500 31.750	0 -0.00065 0 -16	2.0000 50.800	0 -0.00090 0 -22	5.0000 127.000		3.1250 79.375	2.5000 63.500	0.3750 9.525	2.5625 65.088	0.2813 7.144	0.4063 10.319	0.2656 6.747
1.5000 38.100		2.3750 60.325		5.6875 144.463		3.7500 95.250	3.0000 76.200	0.5000 12.700	3.0625 77.788	0.3437 8.731	0.5000 12.700	0.3281 8.334
2.0000 50.800		3.0000 76.200	0 -0.00100 0 -25	7.7500 196.850		4.3750 111.125	3.5000 88.900	0.5000 12.700	3.6875 93.662	0.3437 8.731	0.5000 12.700	0.3281 8.334

###

Nominal shaft dia. inch/ mm	Square flange long type LMBK…LUU	Weight (gf)	Eccentricity inch/µm	Squareness inch/µm	Basic load rating
					Dynamic C N	Static Co N
1/4 6.350	LMBK4LUU	33	0.0006 15	0 .0006 15	323	530
3/8 9.525	LMBK6LUU	45			353	630
1/2 12.700	LMBK8LUU	106			813	1,570
5/8 15.875	LMBK10LUU	200			1,230	2,350
3/4 19.050	LMBK12LUU	240	0.0008 20	0.0008 20	1,370	2,740
1 25.400	LMBK16LUU	470			1,570	3,140
1-1/4 31.750	LMBK20LUU	935	0.0010 25	0.0010 25	2,500	5,490
1-1/2 38.100	LMBK24LUU	1460			3,430	8,040
2 50.800	LMBK32LUU	2620	0.0012 30	0.0012 30	6,080	15,900

###

Major dimensions and tolerance
inch mm	dr	inch mm	D	inch mm	L	Flange
	Tolerance inch µm		Tolerance inch µm		Tolerance inch µm	Df inch mm	K inch mm	t inch mm	Dp inch mm	X inch mm	Y inch mm	Z inch mm
0.2500 6.350	0 -0.00040 0 -10	0.5000 12.700	0 -0.00050 0 -13	1.3750 34.925	±0.012 ±300	1.2500 31.750	1.0000 25.400	0.219 5.556	0.8750 22.225	0.1563 3.969	0.2500 6.350	0.1406 3.572
0.3750 9.525		0.6250 15.875	0 -0.00065 0 -16	1.5938 40.481		1.5000 38.100	1.2500 31.750	0.2500 6.350	1.0620 26.988	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.5000 12.700		0.8750 22.225		2.3750 60.325	0 -0.012 0 -300	1.7500 44.450	1.3750 34.925	0.2500 6.350	1.312 33.338	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.6250 15.875		1.1250 28.575		2.8125 71.438		2.0000 50.800	1.5000 38.100	0.2500 6.350	1.5620 39.688	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.7500 19.050	0 -0.00050 0 -12	1.2500 31.750	0 -0.00075 0 -19	3.0937 78.581		2.1875 55.563	1.6875 42.863	0.3125 7.938	1.7180 43.660	0.2188 5.556	0.3439 8.731	0.2031 5.159
1.0000 25.400		1.5625 39.688		4.2831 108.744	0 -0.016 0 -400	2.5000 63.500	2.0000 50.800	0.3125 7.938	2.0310 51.594	0.2188 5.556	0.3438 8.731	0.2031 5.159
1.2500 31.750	0 -0.00065 0 -16	2.0000 50.800	0 -0.00090 0 -22	5.0000 127.000		3.1250 79.375	2.5000 63.500	0.3750 9.525	2.5625 65.088	0.2813 7.144	0.4063 10.319	0.2656 6.747
1.5000 38.100		2.3750 60.325		5.6875 144.463		3.7500 95.250	3.0000 76.200	0.5000 12.700	3.0625 77.788	0.3437 8.731	0.5000 12.700	0.3281 8.334
2.0000 50.800		3.0000 76.200	0 -0.00100 0 -25	7.7500 196.850		4.3750 111.125	3.5000 88.900	0.5000 12.700	3.6875 93.662	0.3437 8.731	0.5000 12.700	0.3281 8.334

Nominal shaft dia. mm	Resin retainer		Eccentricity μm	Squareness μm	Basic load rating
	Square flange type LMK…UU	Weight (gf)			Dynamic C N	Static Co N
6	LMK6UU	18	12	12	206	265
8	LMK8SUU	24			176	216
8	LMK8UU	29			274	392
10	LMK10UU	52			372	549
12	LMK12UU	57			510	784
13	LMK13UU	72			510	784
16	LMK16UU	104			774	1180
20	LMK20UU	145	15	15	882	1370
25	LMK25UU	300			980	1570
30	LMK30UU	375			1570	2740
35	LMK35UU	560	20	20	1670	3140
40	LMK40UU	880			2160	4020
50	LMK50UU	2,000			3820	7940
60	LMK60UU	2,560	25	25	4700	10000
80	LMK80UU	5,300			7350	16000
100	LMK100UU	9,900	30	30	14100	34800

###

Major dimensions and tolerance(T)
mm	dr	mm	D	mm	L	Flange
	Tolerance μm		T μm		T μm	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
6	0 -9	12	0 -11	19	±300	28	22	5	20	3.5	6	3.1
8		15		17		32	25	5	24	3.5	6	3.1
8		15		24		32	25	5	54	3.5	6	3.1
10		19	0 -13	29	0 -200	40	30	6	29	4.5	7.5	4.1
12		21		30		42	32	6	32	4.5	7.5	4.1
13		23		32		43	34	6	33	4.5	7.5	4.1
16		28		37		48	37	6	38	4.5	7.5	4.1
20	0 -10	32	0 -16	42		54	42	8	43	5.5	9	5.1
25		40		59	0 -300	62	50	8	51	5.5	9	5.1
30		45		64		74	58	10	60	6.6	11	6.1
35	0 -12	52	0 -19	70		82	64	10	67	6.6	11	6.1
40		60		80		96	75	13	78	9	14	8.1
50		80		100		116	92	13	98	9	14	8.1
60	0 -15	90	0 -22	110		134	106	18	112	11	17	11.1
80		120		140	0 -400	164	136	18	142	11	17	11.1
100	0 -20	150	0 -25	175		200	170	20	175	14	20	13.1

###

Nominal shaft dia. mm	Square flange type LMEF…UU	Weight (gf)	Eccentricity µ m	Squareness µ m	Basic load rating
					Dynamic C N	Static Co N
5	LMEK5UU	20	12	12	206	265
8	LMEK8UU	33			265	402
12	LMEK12UU	64			510	784
16	LMEK16UU	90			578	892
20	LMEK20UU	147	15	15	862	1,370
25	LMEK25UU	295			980	1,570
30	LMEK30UU	465			1,570	2,740
40	LMEK40UU	975	17	17	2,160	4,020
50	LMEK50UU	1545			3,820	7,940
60	LMEK60UU	2780	20	20	4,700	9,800
80	LMEK80UU	5920			7,350	16,000

###

Major dimensions and tolerance
mm	dr	mm	D	mm	L	Flange
	Tolerance µ m		Tolerance µ m		Tolerance µ m	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
5	+8 0	12	0 -8	22	±300	28	22	5	20	3.5	6	3.1
8		16		25		32	25	5	24	3.5	6	3.1
12		22	0 -9	32	0 -200	42	32	6	32	4.5	7.5	4.1
16	+9 -1	26		36		46	35	6	36	4.5	7.5	4.1
20		32	0 -11	45		54	42	8	43	5.5	9	5.1
25	+11 -1	40		58	0 -300	62	50	8	51	5.5	9	5.1
30		47		68		76	60	10	62	6.6	11	6.1
40	+13 -2	62	0 -13	80		98	75	13	80	9	14	8.1
50		75		100		112	88	13	94	9	14	8.1
60		90	0 -15	125	0 -400	134	106	18	112	11	17	11.1
80	+16 -4	120		165		164	136	18	142	11	17	11.1

###

Nominal shaft dia. inch/mm	Square flange type LMBK…UU	Weight (gf)	Eccentricity inch/µm	Squareness inch/µm	Basic load rating
					Dynamic C N	Static Co N
1/4 6.350	LMBK4UU	25	0.0005 12	0.0005 12	206	265
3/8 9.525	LMBK6UU	32			225	314
1/2 12.700	LMBK8UU	68			510	784
5/8 15.875	LMBK10UU	124			774	1,180
3/4 19.050	LMBK12UU	150	0.0006 15	0.0006 15	862	1,370
1 25.400	LMBK16UU	280			980	1,570
1-1/4 31.750	LMBK20UU	580	0.0008 20	0.0008 20	1,570	2,740
1-1/2 38.100	LMBK24UU	930			2,180	4,020
2 50.800	LMBK32UU	1580	0.0010 25	0.0010 25	3,820	7,940
2-1/2 63.500	LMBK40UU	3200			4,700	10,000
3 76.200	LMBK48UU	5000			7,350	16,000
4 101.600	LMBK64UU	11300	0.0012 30	0.0012 30	14,100	34,800

###

Major dimensions and tolerance
inch mm	dr	inch mm	D	inch mm	L	Flange
	Tolerance inch/µm		Tolerance inch/µm		Tolerance inch/µm	Df inch mm	K inch mm	t inch mm	Dp inch mm	X inch mm	Y inch mm	Z inch mm
0.2500 6.350	0 -0.00040 0 -9	0.5000 12.700	0 -0.00045 0 -11	0.7500 19.050	±0.012 ±300	1.2500 31.750	1.0000 25.400	0.219 5.556	0.8750 22.225	0.1560 3.969	0.2500 6.350	0.1410 3.572
0.3750 9.525		0.6250 15.875	0 -0.00050 0 -13	0.8750 22.225		1.5000 38.100	1.2500 31.750	0.2500 6.350	1.0620 26.988	0.1875 4.763	0.2970 7.541	0.1720 4.366
0.5000 12.700		0.8750 22.225		1.2500 31.750	0 -0.008 0 -200	1.7500 44.450	1.3750 34.925	.2500 6.350	1.312 33.338	0.1875 4.763	0.2970 7.541	0.1720 4.366
0.6250 15.875		1.1250 28.575		1.500 38.100		2.0000 50.800	1.5000 38.100	0.2500 6.350	1.5620 39.688	0.1875 4.763	0.2970 7.541	0.1720 4.366
0.7500 19.050	0 -0.00040 0 -10	1.2500 31.750	0 -0.00065 0 -16	1.6250 41.275		2.1875 55.563	1.6875 42.863	0.3125 7.938	1.7180 43.660	0.2187 5.556	0.3440 8.731	0.2030 5.159
1.0000 25.400		1.5625 39.688		2.2500 57.150	0 -0.012 0 -300	2.5000 63.500	2.0000 50.800	0.3125 7.938	2.0310 51.594	0.2187 5.556	0.3440 8.731	0.2030 5.159
1.2500 31.750	0 -0.00050 0 -12	2.0000 50.800	0 -0.00075 0 -19	2.6250 66.675		3.1250 79.375	2.5000 63.500	0.3750 9.525	2.5625 65.088	0.2812 7.144	0.4060 10.319	0.2656 6.747
1.5000 38.100		2.3750 60.325		3.0000 76.200		3.7500 95.250	3.0000 76.200	0.5000 12.700	3.0625 77.788	0.3440 8.731	0.5000 12.700	0.3280 8.334
2.0000 50.800		3.0000 76.200	0 -0.00090 0 -22	4.0000 101.600		4.3750 111.125	3.5000 88.900	0.5000 12.700	3.6875 93.662	0.3440 8.731	0.5000 12.700	0.3280 8.334
2.5000 63.500	0 -0.00060 0 -15	3.7500 95.250		5.0000 127.000		5.3750 136.525	4.3750 111.125	0.7500 19.050	4.5625 115.887	0.4062 10.319	0.6250 15.875	0.3750 9.525
3.0000 76.200		4.5000 114.300		6.0000 152.400	0 -0.016 0 -400	6.1250 155.575	5.0000 127.000	0.7500 19.050	5.3125 134.937	0.4062 10.319	0.6250 15.875	0.3750 9.525
4.0000 101.600	0 -0.00080 0 -20	6.0000 152.400	0 -0.00100 0 -25	8.0000 203.200		8.0000 203.200	6.7500 171.450	0.8750 22.225	7.0000 177.800	0.5000 12.700	0.7125 18.097	0.5000 12.700

###

Nominal shaft dia. mm	Square flange long type LMK…LUU	Weight (gf)	Eccentricity µm	Squareness µm	Basic load rating
					Dynamic C N	Static Co N
6	LMK6LUU	25	15	15	323	529
8	LMK8LUU	43			431	784
10	LMK10LUU	78			588	1,100
12	LMK12LUU	90			813	1,570
13	LMK13LUU	108			813	1,570
16	LMK16LUU	165			1,230	2,350
20	LMK20LUU	225	20	20	1,400	2,740
25	LMK25LUU	500			1,560	3,140
30	LMK30LUU	590			2,490	5,490
35	LMK35LUU	930	25	25	2,650	6,270
40	LMK40LUU	1380			3,430	8,040
50	LMK50LUU	3400			6,080	15,900
60	LMK60LUU	4060	30	30	7,550	20,000

###

Major dimensions and tolerance
mm	dr	mm	D	mm	L	Flange
	Tolerance µm		Tolerance µm		Tolerance µm	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
6	0 -10	12	0 -13	35	±300	28	22	5	20	3.5	6	3.1
8		15		45		32	25	5	24	3.5	6	3.1
10		19	0 -16	55		40	30	6	29	4.5	7.5	4.1
12		21		57	0 -300	42	32	6	32	4.5	7.5	4.1
13		23		61		43	34	6	33	4.5	7.5	4.1
16		28		70		48	37	6	38	4.5	7.5	4.1
20	0 -12	32	0 -19	80		54	42	8	43	5.5	9	5.1
25		40		112	0 -400	62	50	8	51	5.5	9	5.1
30		45		123		74	58	10	60	6.6	11	6.1
35	0 -15	52	0 -22	135		82	64	10	67	6.6	11	6.1
40		60		151		96	75	13	78	9	14	8.1
50		80		192		116	92	13	98	9	14	8.1
60	0 -20	90	0 -25	209		134	106	18	112	11	17	11.1

###

Nominal shaft diameter mm	Square flange long type LMEK…LUU	Weight (gf)	Eccentricity µm	Squareness µm	Basic load rating
					Dynamic C N	Static Co N
8	LMEK8LUU	51	15	15	421	804
12	LMEK12LUU	90			813	1,570
16	LMEK16LUU	135			912	1,780
20	LMEK20LUU	225	17	17	1,370	2,740
25	LMEK25LUU	500			1,570	3,140
30	LMEK30LUU	720			2,500	5,490
40	LMEK40LUU	1600	20	20	3,430	8,040
50	LMEK50LUU	2620			6,080	15,900
60	LMEK60LUU	4480	25	25	7,550	20,000

###

Major dimensions and tolerance
mm	dr	mm	D	mm	L	Flange
	Tolerance µm		Tolerance µm		Tolerance µm	Df mm	K mm	t mm	Dp mm	X mm	Y mm	Z mm
8	+9 -1	16	0 -9	46	±300	32	25	5	24	3.5	6	3.1
12		22	0 -11	61	0 -300	42	32	6	32	4.5	7.5	4.1
16	+11 -1	26		68		46	35	6	36	4.5	7.5	4.1
20		32	0 -13	80		54	42	8	43	5.5	9	5.1
25	+13 -2	40		112	0 -400	62	50	8	51	5.5	9	5.1
30		47		123		76	60	10	62	6.6	11	6.1
40	+16 -4	62	0 -15	151		98	75	13	80	9	14	8.1
50		75		192		112	88	13	94	9	14	8.1
60		90	0 -20	209		134	106	18	112	11	17	11.1

###

Nominal shaft dia. inch/ mm	Square flange long type LMBK…LUU	Weight (gf)	Eccentricity inch/µm	Squareness inch/µm	Basic load rating
					Dynamic C N	Static Co N
1/4 6.350	LMBK4LUU	33	0.0006 15	0 .0006 15	323	530
3/8 9.525	LMBK6LUU	45			353	630
1/2 12.700	LMBK8LUU	106			813	1,570
5/8 15.875	LMBK10LUU	200			1,230	2,350
3/4 19.050	LMBK12LUU	240	0.0008 20	0.0008 20	1,370	2,740
1 25.400	LMBK16LUU	470			1,570	3,140
1-1/4 31.750	LMBK20LUU	935	0.0010 25	0.0010 25	2,500	5,490
1-1/2 38.100	LMBK24LUU	1460			3,430	8,040
2 50.800	LMBK32LUU	2620	0.0012 30	0.0012 30	6,080	15,900

###

Major dimensions and tolerance
inch mm	dr	inch mm	D	inch mm	L	Flange
	Tolerance inch µm		Tolerance inch µm		Tolerance inch µm	Df inch mm	K inch mm	t inch mm	Dp inch mm	X inch mm	Y inch mm	Z inch mm
0.2500 6.350	0 -0.00040 0 -10	0.5000 12.700	0 -0.00050 0 -13	1.3750 34.925	±0.012 ±300	1.2500 31.750	1.0000 25.400	0.219 5.556	0.8750 22.225	0.1563 3.969	0.2500 6.350	0.1406 3.572
0.3750 9.525		0.6250 15.875	0 -0.00065 0 -16	1.5938 40.481		1.5000 38.100	1.2500 31.750	0.2500 6.350	1.0620 26.988	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.5000 12.700		0.8750 22.225		2.3750 60.325	0 -0.012 0 -300	1.7500 44.450	1.3750 34.925	0.2500 6.350	1.312 33.338	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.6250 15.875		1.1250 28.575		2.8125 71.438		2.0000 50.800	1.5000 38.100	0.2500 6.350	1.5620 39.688	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.7500 19.050	0 -0.00050 0 -12	1.2500 31.750	0 -0.00075 0 -19	3.0937 78.581		2.1875 55.563	1.6875 42.863	0.3125 7.938	1.7180 43.660	0.2188 5.556	0.3439 8.731	0.2031 5.159
1.0000 25.400		1.5625 39.688		4.2831 108.744	0 -0.016 0 -400	2.5000 63.500	2.0000 50.800	0.3125 7.938	2.0310 51.594	0.2188 5.556	0.3438 8.731	0.2031 5.159
1.2500 31.750	0 -0.00065 0 -16	2.0000 50.800	0 -0.00090 0 -22	5.0000 127.000		3.1250 79.375	2.5000 63.500	0.3750 9.525	2.5625 65.088	0.2813 7.144	0.4063 10.319	0.2656 6.747
1.5000 38.100		2.3750 60.325		5.6875 144.463		3.7500 95.250	3.0000 76.200	0.5000 12.700	3.0625 77.788	0.3437 8.731	0.5000 12.700	0.3281 8.334
2.0000 50.800		3.0000 76.200	0 -0.00100 0 -25	7.7500 196.850		4.3750 111.125	3.5000 88.900	0.5000 12.700	3.6875 93.662	0.3437 8.731	0.5000 12.700	0.3281 8.334

###

Nominal shaft dia. inch/ mm	Square flange long type LMBK…LUU	Weight (gf)	Eccentricity inch/µm	Squareness inch/µm	Basic load rating
					Dynamic C N	Static Co N
1/4 6.350	LMBK4LUU	33	0.0006 15	0 .0006 15	323	530
3/8 9.525	LMBK6LUU	45			353	630
1/2 12.700	LMBK8LUU	106			813	1,570
5/8 15.875	LMBK10LUU	200			1,230	2,350
3/4 19.050	LMBK12LUU	240	0.0008 20	0.0008 20	1,370	2,740
1 25.400	LMBK16LUU	470			1,570	3,140
1-1/4 31.750	LMBK20LUU	935	0.0010 25	0.0010 25	2,500	5,490
1-1/2 38.100	LMBK24LUU	1460			3,430	8,040
2 50.800	LMBK32LUU	2620	0.0012 30	0.0012 30	6,080	15,900

###

Major dimensions and tolerance
inch mm	dr	inch mm	D	inch mm	L	Flange
	Tolerance inch µm		Tolerance inch µm		Tolerance inch µm	Df inch mm	K inch mm	t inch mm	Dp inch mm	X inch mm	Y inch mm	Z inch mm
0.2500 6.350	0 -0.00040 0 -10	0.5000 12.700	0 -0.00050 0 -13	1.3750 34.925	±0.012 ±300	1.2500 31.750	1.0000 25.400	0.219 5.556	0.8750 22.225	0.1563 3.969	0.2500 6.350	0.1406 3.572
0.3750 9.525		0.6250 15.875	0 -0.00065 0 -16	1.5938 40.481		1.5000 38.100	1.2500 31.750	0.2500 6.350	1.0620 26.988	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.5000 12.700		0.8750 22.225		2.3750 60.325	0 -0.012 0 -300	1.7500 44.450	1.3750 34.925	0.2500 6.350	1.312 33.338	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.6250 15.875		1.1250 28.575		2.8125 71.438		2.0000 50.800	1.5000 38.100	0.2500 6.350	1.5620 39.688	0.1875 4.763	0.2969 7.541	0.1719 4.366
0.7500 19.050	0 -0.00050 0 -12	1.2500 31.750	0 -0.00075 0 -19	3.0937 78.581		2.1875 55.563	1.6875 42.863	0.3125 7.938	1.7180 43.660	0.2188 5.556	0.3439 8.731	0.2031 5.159
1.0000 25.400		1.5625 39.688		4.2831 108.744	0 -0.016 0 -400	2.5000 63.500	2.0000 50.800	0.3125 7.938	2.0310 51.594	0.2188 5.556	0.3438 8.731	0.2031 5.159
1.2500 31.750	0 -0.00065 0 -16	2.0000 50.800	0 -0.00090 0 -22	5.0000 127.000		3.1250 79.375	2.5000 63.500	0.3750 9.525	2.5625 65.088	0.2813 7.144	0.4063 10.319	0.2656 6.747
1.5000 38.100		2.3750 60.325		5.6875 144.463		3.7500 95.250	3.0000 76.200	0.5000 12.700	3.0625 77.788	0.3437 8.731	0.5000 12.700	0.3281 8.334
2.0000 50.800		3.0000 76.200	0 -0.00100 0 -25	7.7500 196.850		4.3750 111.125	3.5000 88.900	0.5000 12.700	3.6875 93.662	0.3437 8.731	0.5000 12.700	0.3281 8.334

Materials Used in Bearings

If you’re not familiar with the types of bearings, you may be interested in knowing more about the materials used to manufacture them. Here’s a look at what each type of bearing is made of, how it’s used, and how much they cost. To find the right bearing for your application, it’s important to choose a quality lubricant. The materials used in bearings are determined by their type and applications. Choosing the right lubricant will extend its life, and protect your machine’s parts from damage and premature wear.

Materials used in bearings

Bearings are made from a variety of materials. Stainless steel is a common material used for the components of bearings. It has a higher content of chromium and nickel. When exposed to oxygen, chromium reacts with it to form chromium oxide, which provides a passive film. For higher temperatures, teflon and Viton are also used. These materials offer excellent corrosion resistance and are often preferred by manufacturers for their unique properties.
Stainless steel is another material used in bearings. AISI 440C is a high-carbon stainless steel commonly used in rolling-contact bearings. It is widely used in corrosive environments, especially in applications where corrosion resistance is more important than load capacity. It can also be heat-treated and hardened to 60 HRC, but has lower fatigue life than SAE 52100. Stainless steel bearings may carry a 20-40% price premium, but their superior performance is worth the extra money.
Graphite and molybdenum disulfide are two of the most common materials used in bearings. While graphite is a popular material in bearings, it has very poor corrosion resistance and is unsuitable for applications where oil or grease is required. Graphite-based composite materials are another option. They combine the benefits of both graphite and ceramic materials. A variety of proprietary materials have been developed for high-temperature use, such as graphite and MoS2.
Wood bearings have been around for centuries. The oldest ones used wood and Lignum Vitae. These materials were lightweight, but they were incredibly strong and durable. Wood bearings were also lubricated with animal fats. During the 1700s, iron bearings were a popular choice. In 1839, Isaac Babbitt invented an alloy containing hard metal crystals suspended in a softer metal. It is considered a metal matrix composite.

Applications of bearings

Bearings are used in many different industries and systems to help facilitate rotation. The metal surfaces in the bearings support the weight of the load, which drives the rotation of the unit. Not all loads apply the same amount of force to bearings, however. Thrust and radial loads act in distinctly different ways. To better understand the different uses of bearings, let’s examine the various types of bearings. These versatile devices are essential for many industries, from automobiles to ships and from construction to industrial processes.
Cylindrical roller bearings are designed to support heavy loads. Their cylindrical rolling element distributes the load over a larger area. They are not, however, suited to handling thrust loads. Needle bearings, on the other hand, use small diameter cylinders and can fit into tighter spaces. The advantages of these types of bearings are numerous, and many leading producers are now leveraging the Industrial Internet of Things (IIoT) to develop connected smart bearings.
As a power generation industry, bearings play an essential role. From turbines to compressors, from generators to pumps, bearings are essential components of equipment. In addition to bearings, these components help move the equipment, so they can work properly. Typically, these components use ball bearings, although some roller bearings are used as well. In addition to being efficient and durable, these types of bearings also tend to be built to meet stringent internal clearance requirements and cage design requirements.
In addition to bearings for linear motion, bearings can also bear the weight of a rotary part. Depending on the application, they can be designed to minimize friction between moving parts. By constraining relative motion, bearings are used to reduce friction within a given application. The best-designed bearings minimize friction in a given application. If you’re in the market for a new bearing, NRB Industrial Bearings Limited is an excellent source to begin your search.

Types of bearings

The type of bearings you choose will have a significant impact on the performance of your machinery. Using the right bearings can increase efficiency, accuracy, and service intervals, and even reduce the cost of purchasing and operating machinery. There are several different types of bearings to choose from, including ball bearings and flexure bearings. Some types use a fluid to lubricate their surfaces, while others do not.
Plain bearings are the most common type of bearing, and are used for a variety of applications. Their cylindrical design allows for a relatively smooth movement. Often made of copper or other copper alloy, they have low coefficients of friction and are commonly used in the construction industry. Some types of plain bearings are also available with a gudgeon pin, which connects a piston to a connecting rod in a diesel engine.
Magnetic bearings are the newest type of bearing. They use permanent magnets to create a magnetic field around the shaft without requiring any power. These are difficult to design, and are still in the early stages of development. Electromagnets, on the other hand, require no power but can perform very high-precision positioning. They can be extremely durable and have a long service life. They are also lightweight and easy to repair.
Another type of bearing is needle roller. These are made of thin, long, and slender cylinders that are used in a variety of applications. Their slender size is ideal for a space-constrained application, and their small profile allows them to fit in tight places. These types of bearings are often used in automotive applications, bar stools, and camera panning devices. They have several advantages over ball bearings, including the ability to handle heavy axial loads.

Cost of bearings

A wide range of factors affect the cost of aerospace bearings, including the bearing material and its volatility. Manufacturers typically use high-grade steel for aircraft bearings, which are highly affected by fluctuations in the steel price. Government policies also play a part in the variation in trade price. The implementation of COVID-19 has changed the market dynamics, creating an uncertain outlook for supply and demand of aerospace bearings. New trade norms and transportation restrictions are expected to hamper the growth of this industry.
Demand for aerospace bearings is largely driven by aircraft manufacturers. In North America, aircraft manufacturers must meet extremely high standards of weight, performance, and quality. They also must be lightweight and cost-effective. This has resulted in a rising cost of aerospace bearings. The market for aerospace bearings is expected to grow at the highest CAGR over the next few years, driven by increasing investments in defense and aerospace infrastructure across Asia-Pacific.
Hub assemblies are also expensive. A wheel hub will cost between $400 and $500 for one set of bearings. In addition to this, the speed sensor will be included. The average cost of wheel bearings is between $400 and $500 for one side, including labor. But this price range is much lower if the bearing is a replacement of an entire wheel assembly. It is still worth noting that wheel hub bearings can be purchased separately for a lower price.
Replacement of one or two wheel bearings will depend on the model and year of the vehicle. For a small car, one rear wheel bearing can cost between $190 and $225, whereas two front wheel hubs can cost upwards of $1,000. Labor and parts prices will vary by location, and labor costs may also be covered under some warranty plans. If you decide to have it done yourself, be sure to ask multiple shops for estimates.

Inspection of bearings

To maintain bearing performance and prevent accidents, periodic inspections are essential. In addition to ensuring reliability, these inspections improve productivity and efficiency. Regular maintenance includes disassembly inspection, replenishment of lubricant and monitoring operation status. Here are some common ways to perform the necessary inspections. Keep reading to learn how to maintain bearings. After disassembly, you must clean the components thoroughly. Ensure that the bearings are free of burrs, debris, and corrosion.
Ultrasound technology is an excellent tool for monitoring slow-speed bearings. Most ultrasound instruments offer wide-ranging sensitivity and frequency tuning. Ultrasound can also be used to monitor bearing sound. Ultra-slow bearings are usually large and greased with high-viscosity lubricant. Crackling sounds indicate deformity. You can also listen for abnormal noise by plugging a vibration analyzer into the machine. Once the machine shows abnormal noise, schedule additional inspections.
Ultrasonic inspection involves using an ultrasound transducer to measure the amplitude of sound from a bearing. It is effective in early warnings of bearing failure and prevents over-lubrication. Ultrasound inspection of bearings is a cost-effective solution for early diagnosis of bearing problems. In addition to being a reliable tool, ultrasonic testing is digital and easy to implement. The following are some of the advantages of ultrasonic bearing inspection.
Dynamic quality evaluation involves the use of a special fixture for measuring bearing deformations under low shaft speed and light radial load. The size of the fixture influences the value of the deformations. A fixture should be sized between the diameter of the sensor and the roller to ensure maximum precision. The outer deformation signal is more sensitive with a larger sensor diameter. A vibration-acceleration sensor is used for the contrast test.