Ball Bushings Straight

Linear Bushings come with the function of performing linear and rotational composite movements, which can achieve significant miniaturization compared to the traditional method of combining linear bearings and rotating bearings.

Linear Bushings are used to provide linear motion and rotary motion. Due to the point contact between the ball and the rolling surface, low friction rolling motion can be performed.

Feature of Linear Bushings 1: Effective utilization of space. The combination of the guide shaft and the linear bushing enables effective use of space, suitable for small mechanism designs.
Feature of Linear Bushings 2: Good interchangeability. Linear bushings have good interchangeability because they can be used with shafts randomly.
Feature of Linear Bushings 3: Appropriate specifications can be selected according to the conditions of use.
Feature of Linear Bushings 4: More cost effective than the linear guide.

 

Part Number of Linear Bushings				Max. Stroke		Rows of balls		D		L		R		B		W	D1
Type	dr	Tolerance	Length	Single	Double	Single	Double		Tolerance Range		Tolerance Range	Single	Double		Tolerance Range
E-LBB	5	0 -0.009	Not Specified (Single Type) L (Double Type)	16	7	3	6	10	0 -0.016	15	±0.2	5	10	8	0 -0.5	1.1	9.6
	6			20	7.2			12		19		6.2	12.4	11.3			11.5
	8			24	8.5			15		24		8	16	15.3			14.3
	10			33	14			19	0 -0.019	29		9	18	19.4		1.3	18
	12			34	17			21		30		10	20	20.4			20
	13			36				23		32							22
	16			40	18	4	8	28		37		13	26	23.3		1.6	27
	20	0 -0.010		47	22			32	0 -0.022	42		14	28	27.3			30.5
	25			50				37		45		15	30	28.3			35.3
	30			85	47	3	6	45		64		18	36	40.8		1.85	43
	35	0 -0.012		90	55			52	0 -0.03	70	±0.3	20	40	45.3		2.1	49
	40			110	69			60		80				56.3			57
	45							65				24	48			2.15	62
	50			140	89			72		100				72.3		2.65	70

Unlike Linear Bushings, a non-circulating ball mechanism is used, so the stroke is limited. Please be sure to use it within the maximum stroke.

 

Part Number				Max. Stroke		Rows of balls		D		L		R		B		W	D1
Type	dr	Tolerance	Length	Single	Double	Single	Double		Tolerance Range		Tolerance Range	Single	Double		Tolerance Range
E-LBB	5	0 -0.009	Not Specified (Single Type) L (Double Type)	16	7	3	6	10	0 -0.016	15	±0.2	5	10	8	0 -0.5	1.1	9.6
	6			20	7.2			12		19		6.2	12.4	11.3			11.5
	8			24	8.5			15		24		8	16	15.3			14.3
	10			33	14			19	0 -0.019	29		9	18	19.4		1.3	18
	12			34	17			21		30		10	20	20.4			20
	13			36				23		32							22
	16			40	18	4	8	28		37		13	26	23.3		1.6	27
	20	0 -0.010		47	22			32	0 -0.022	42		14	28	27.3			30.5
	25			50				40		59		15	30	28.3			35.3
	30			85	47	3	6	45		64		18	36	40.8		1.85	43
	35	0 -0.012		90	55			52	0 -0.03	70	±0.3	20	40	45.3		2.1	49
	40			110	69			60		80				56.3			57
	45							65				24	48			2.15	62
	50			140	89			72		100				72.3		2.65	70

Unlike linear bushings, a non-circulating ball mechanism is used, so the stroke is limited. Please be sure to use it within the maximum stroke.
 

	Basic Load Rating
	C (Dynamic) N		Co (Static) N
dr	Single	Double	Single	Double
5	118	160	102	146
6	232	380	160	320
8	358	590	262	520
10	656	1140	490	1030
12	1120	1810	850	1720
13	1180	1830	880	1750
16	1590	2230	1660	2360
20	1640	2310	1730	2520
25	1710	2420	1360	2780
30	3120	4920	3220	6710
35	3260	5180	3610	7200
40	4380	6930	4960	9810
45	4420	7060	5120	9960
50	5810	9210	7130	14300

■ Regular maintenance:
① Before use, please apply grease to the ball row inside the linear bushing, and then replenish it in due course. Grease forms an oil film on the surfaces of steel ball and rolling surface (guide shaft·bushing) of linear bushing, which effectively reduces friction and prevents sintering. Grease reduction and aging will greatly affect the life of linear bushing.
② Recommended grease: lithium soap grease. ClickGrease
for details. ③ Recommended grease filling interval: Usually every 6 months.
④When the moving distance is long, it is recommended to move once every three months or when the moving distance exceeds 1000km within the time limit, the 1000km shall prevail.
⑤ When the linear bushing is subjected to large moment load (eccentric load), one piece of single type is not applicable, so it is recommended to use one piece of double type or multiple pieces of single type.

■ Dust prevention measures:
If dust or foreign matter enters the inside of the linear bushing, it may damage the circulation of steel balls, resulting in unexpected failures. When used in harsh environment, please install dust cover and protection cover, etc.

■ MISUMI linear bushing is recommended to be installed on the holder with H7 tolerance. The linear bushing is in clearance fit with the housing.

■Unlike linear bushings, a non-circulating ball mechanism is used, so the stroke is limited. Please be sure to use it within the maximum stroke.

■For preloaded use, it is recommended to use a MISUMI quenched guide shaft with an outer diameter tolerance of h5.

■ MISUMI linear bushing is recommended to be combined with guide shaft with quenching g6 tolerance.

For the usage method, please refer to Usage Method.
For anti-rust performance and maintenance of metal materials and their surface treatment, please refer to Anti-rust Performance.

*Economy series products are more suitable for medium precision linear motion and rotary motion than standard products