Linear ball bearing

Linear ball bearings are used in applications where a component needs to be moved along a straight line with high accuracy. The object may also need to be returned to its origin with high repeatability. Linear bearings come in a variety of styles and have wide load capacities.
 
Choices for linear bearing styles include air, flat ball cage, ball spline, ball bushing, needle roller cage, cam follower, crossed roller, guide wheel, hydrostatic, plain or journal, linear motion guide, flat roller cage, and linear roller. An air bearing is a very low friction bearing that rides on a cushion of air. A flat ball cage is a non-recirculating or recirculating bearing design where the balls are trapped in a frame that spaces them at equal distance. A ball spline bearing has balls that contact grooves in a matching spline shaft on at least four sides, depending on the number of splines. A ball bushing is similar to a bushing in construction but has rows of balls to reduce friction and increase stiffness, accuracy, and smoothness. Caged needle bearings are low friction, high load bearings in a composite cage.A cam follower is a wheel on an axle and that wheel runs on bearings. Roller and cross roller bearings are used on linear ways where straightness and accuracy are critical. A guide wheel is a low cost, versatile and rugged alternative to traditional linear bearings. A linear hydrostatic bearing works much like an air bearing. The bearing body rides on a thin film of oil or water that provides for near frictionless movement. Journal bearings consist of a split cylindrical shell of hard, strong metal held in a rigid support and an inner cylindrical part of soft metal, which holds a rotating shaft. A linear motion guide is a linear profiled rail that has a set of mating bearings that travel along the rail. A flat roller cage is similar to crossed roller bearings except that the axes to all of the rollers are parallel instead of crossed.  A linear roller is a set of circulating roller bearings that ride on a round or flat guide. A bearing or rail assembly is a complete assembly comprised of the bearing and guide or rail.

LM type Linear bearings

MODEL NO.	NUMBER OF BALL	MAIN DIMENSIONS										ECCEN-TRICITY	BASIC LOAD RATING
		INSCRIBED CIRCLE		OUTER DIAMETER		LENGTH		OUT LOCKING GROOVE			W		C(kgf)	Co(kgf)
		dr	TOLERANCE	D	TOLERANCE	L	TOLERANCE	B	TOLERANCE	D1
LM04UU	4	4	0 -0.008	8	0 -0.009	12	0 -0.12					0.008	9	13
LM05UU	4	5		10		15		10.2	0 -0.20	9.6	1.1		17	21
LM6UU	4	6	0 -0.009	12	0 -0.011	17	0 -0.20	13.5		11.5	1.1	0.012	21	27
LM8SUU	4	8		15		19		11.5		14.3	1.1		18	23
LM8UU	4	8		15		24		17.5		14.3	1.1		27	41
LM10UU	4	10		19	0 -0.013	29		22		18	1.3		38	56
LM12UU	4	12		21		30		23		20	1.3		42	61
LM13UU	4	13		23		32		23		22	1.3		52	79
LM16UU	5	16		28		37		26.5		27	1.6		79	120
LM20UU	5	20	0 -0.010	32	0 -0.016	42		30.5		30.5	1.6	0.015	88	140
LM25UU	6	25		40		59	0 -0.30	41	0 -0.30	38	1.85		100	160
LM30UU	6	30		45		64		44.5		43	1.85		160	280
LM35UU	6	35	0 -0.012	52	0 -0.019	70		49.5		49	2.1	0.02	170	320
LM40UU	6	40		60		80		60.5		57	2.1		220	410
LM50UU	6	50		80		100		74		76.5	2.6		390	810
LM60UU	6	60	0 -0.015	90	0 -0.022	110		85		86.5	3.15	0.025	480	1020

     LM type with 7 subsidiary construction:
     LM TYPE; LM-AJ TYPE;LM-OP TYPE;LM-L TYPE;
     LM(M) TYPE; LMS TYPE; PLM TYPE;
 
KB Type Linear Bearing

MODEL NO.	NUMBER OF BALL	MAIN DIMENSIONS										ECCEN-TRICITY	BASIC LOAD RATING
		INSCRIBED CIRCLE		OUTER DIAMETER		LENGTH		OUT LOCKING GROOVE			W		c(kgf)	Co(kgf)
		dr	TOLERANCE	D	TOLERANCE	L	TOLERANCE	B	TOLERANCE	D1
KB3	4	3	+0.008-0	7	0 -0.009	10	0 -0.12					0.010	7	11
KB4	4	4		8		12							9	13
KB5	4	5		12		22	0 -0.20	14.5	0 -0.20	11.5	1.1	0.012	21	27
KB8	4	8		16		25		16.5		15.2	1.1		27	41
KB10	4	10		19	0 -0.009	29		22		18	1.3		38	47
KB12	4	12		22		32		22.9		21	1.3		52	79
KB16	5	16	+0.009 -0.001	26		36		24.9		24.9	1.3		59	91
KB20	5	20		32	0 -0.011	45		31.5		30.3	1.6	0.015	88	140
KB25	6	25	+0.011 -0.001	40		58	0 -0.30	44.1	0 -0.30	37.5	1.85		100	160
KB30	6	30		47		68		52.1		44.5	2.15		160	280
KB40	6	40	+0.013 -0.002	62	0 -0.013	80		60.6		59	2.15	0.017	220	400
KB50	6	50		75		100		77.6		72	2.65		390	810
KB60	6	60		90	0 -0.015	125	0 -0.40	101.7	0 -0.40	86.5	3.15	0.020	480	1020

    KB TYPE; KB(M) TYPE;KBS TYPE;KM-AJ TYPE;
    KML TYPE; KB-OP TYPE
 
SW Type Linear Bearings

MODEL NO.	NUMBER OF BALL	MAIN DIMENSIONS										ECCEN-TRICITY	BASIC LOAD RATING
		INSCRIBED CIRCLE		OUTER DIAMETER		LENGTH		OUT LOCKING GROOVE			W		c(kgf)	Co(kgf)
		dr	TOLE-RANCE	D	TOLE-RANCE	L	TOLE-RANCE	B	TOLE-RANCE	D1
SW04	4	1/46.35	0 -0.009	0.512.7	0 -0.011	0.75 19.05	0 -0.20	0.511 12.98	0 -0.20	0.468711.906	0.039 0.992	0.012	21	27
					0 -0.013
SW06	4	3/8 9.525		0.625 15.875		0.87522.225		0.638516.15		0.58814.935	0.039 0.992		23	32
SW08	4	1/2 12.7		0.875 22.225		1.25 31.75		0.962524.46		0.820920.853	0.04591.168		52	80
SW10	4	5/815.875		1.125 28.575		1.538.1		1.103928.04		1.05926.899	0.05591.422		79	120
SW12	5	3/419.05	0 -0.010	1.2531.75	0 -0.016	1.62541.275		1.165729.61		1.176 29.87	0.05591.422	0.015	88	140
SW16	5	125.4		1.562539.688		2.25 57.15	0 -0.30	1.754744.57	0 -0.30	1.468737.306	0.06791.727		100	160
SW20	6	1-1/431.75	0 -0.012	250.8	0 -0.019	2.62566.675		2.004750.92		1.885947.904	0.06791.727	0.020	160	280
SW24	6	1-1/238.1		2.375 60.325		376.2		2.411861.26		2.238956.87	0.08592.184		220	410
SW32	6	250.8		376.2	0 -0.022	4101.6		3.191781.07		2.837972.085	0.10292.616	0.025	390	810

SW Type; SW-AJ Type; SW-L Type; SW-OP Type

KH Type Linear Bearings

MODEL NO.	NUMBER OF BALL ROWS	WEIGHT	MAIN DIMENSIONS			BASIC LOAD RATING
						DYNAMIC c(kgf)	STATIC Co(kgf)
			d	D	B
KH0824	4	11.3	8	15	24	44	29
KH1026	4	14.4	10	17	26	51	38
KH1228	5	18.1	12	19	28	63	52
KH1428	5	20.6	14	21	28	63	52
KH1630	5	27.2	16	24	30	82	63
KH2030	6	32.7	20	28	30	97	81
KH2540	6	66	25	35	40	203	170
KH3050	7	95	30	40	50	286	276
KH4060	8	180	40	52	60	449	454
KH5070	9	250	50	62	70	561	643