High Precision Flange Linear Bearing with Ball Groove

Basic Info

Model NO.	LMK
Type	Universal
Transport Package	in Craft Paper Carton
Specification	LMK
Trademark	CIE
Origin	Made in Ningbo, China
HS Code	84831020
Production Capacity	2000000PCS/Year

Product Description

High Precision Flange Linear Bearing with Ball groove

The square flange type linear bearing mainly consists of sleeve, ball, seal, nylon cage and square flange. Among them, the flange plays a fixing role. During installation, the coordinated equipment should have high bore accuracy.
The product is finely processed enjoying low coefficient of friction. This also allows it make almost no noise during working. Due to the reasonable design, the flange has good stability. In addition, the product also features high working accuracy. With easy replacement, it has been widely used in CNC machine tools, printers, power tools, sports equipment, multi-axis machine tools, and so on.
The sub-categories of this product are almost similar in the appearance and functionality. However, LMK, LMEK, and LMBK series are produced in accordance with the standards in Asia, Europe, and the Americas. With a wide range of size selection, it can be suitable for different machines. In addition, UU type is a common square flange type linear bearing, while the LUU type refers to the lengthened one.
The LMK-UU square flange linear bearing available in the metric size can be commonly found in the Asian market.

Technical Parameters

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

the LMEK-UU flange linear motion bearing adopts the metric size and finds wide use in Europe.
Technical Parameters

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

The LMBK-UU flange linear bushing using the inch size is widely adopted in the Americas.
Technical Parameters

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

The LMK-LUU square flange long linear bearing is extensively used in Asia because of its metric dimensions.
Technical Parameters

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

The sizes of our LMEK-LUU flange long linear motion bearing are measured in metric units. Hence, the product has found wide use in Europe.
Technical Parameters

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

The LMBK-LUU flange double linear bushing adopts inch sizes and well adapts to the machines in the Americas.
Technical Parameters

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

The LMBK-LUU flange double linear bushing adopts inch sizes and well adapts to the machines in the Americas.
Technical Parameters

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

As a professional standard linear bearing manufacturer and supplier in China, we also offer adjustable type linear bearing, round flange mount linear bearing, SC-UU slide block, SHF horizontal shaft support, and much more.

The LM-UU linear motion bearing is manufactured in line with Asia's mechanical standards, so that it is suitable for use in Asia. The products we offer include many models with the applicable shaft nominal diameter ranging from 3mm to 150mm. They differ in the main dimensions and tolerances, the degree of eccentricity, the maximum radial clearance, and the rated load. Therefore, this linear bearing for Asia market can be used in different sizes and models of machinery, serving to reduce friction and extend life of the equipment.

Our workroom of linear ball bearing at a glance:

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