Linear Bushing - Compact, Single / Double[RoHS Compliant]

Brand :

MISUMI

Caution

Bushings are applied with anti-rust oil harmless to lubricants. After cleaning (recommended cleaning method: ultrasonic cleaner or white kerosene) and drying the bushings, grease application is recommended before use.

Product Description

RoHS10 compliant.
Medium-precision linear bushing with relaxed O.D. tolerances such as I.D. and L dimension.

Dimensional Drawing of Linear Bushings

Type Linear Bushings		Outer Cylinder			Balls	Retainer	Operating Ambient Temperature	[A] Accessory
Single	Double	[M] Material	[H] Hardness	[S] Surface Treatment	[M] Material	[M] Material	Operating Ambient Temperature	[A] Accessory
C-LMK	C-LMKW	SUJ2 Equivalent	58HRC or more	—	SUJ2 Equivalent	Plastic	－20 to 80°C	Seal [M] Material Nitrile Rubber

Specification Table of Linear Bushings

Ordering Example of Linear Bushings

Part Number (Type, dr)

C-LMK6

C-LMKW12

■Single Type

	dr		D		L		B	W	D1	Eccentricity (Max.)	Balls Rows	Basic Load Rating of Linear Bushings		Reference Mass
	Tolerance		Tolerance		Tolerance		Tolerance	W	D1	Eccentricity (Max.)	Balls Rows	C (Dynamic) N	Co (Static) N	(g)
6	+0.003 -0.012	10	+0.006 -0.013	19	+0.2 -0.4	11.3	0 -0.4	1.15	9.6	0.024	6	131	155	6
6		10		19		11.3			9.6			131	155	6
8		13		24		15.3			12.4			235	277	12
10		17		29		19.4			16.2			368	433	26
12		19	+0.006 -0.015	30		20.4		1.35	18			381	449	32
16		26	+0.006 -0.015	37		23.3		1.35	24.9			608	716	58

■Double Type of Linear Bushings

	dr		D		L		B	W	D1	Eccentricity (Max.)	Balls Rows	Basic Load Rating		Allowable Static Moment (N⋅m)	Reference Mass
	Tolerance		Tolerance		Tolerance		Tolerance					C (Dynamic) N	Co (Static) N		(g)
6	+0.003 -0.016	10	+0.006 -0.015	35	+0.3 -0.6	24.8	0 -0.6	1.15	9.6	0.03	6	206	309	2.46	12

8		13		45		32.8			12.4			383	555	5.76	24
10		17		55		41.4			16.2			585	867	10.99	52
12		19	0.006 -0.018	57		43.4		1.35	18			608	899	11.85	64
16		26		70		49.8			24.9			965	1431	23.48	116

[ ! ] Anti-rust oil is applied at the time of delivery.
[ ! ]Linear Bushings, For shaft and housing tolerances, see "Recommended Tolerance of Shaft Diameter / Housing Diameter."
kgf = N × 0.101972

■Linear Bushings Recommended Tolerance of Shaft Diameter / Housing Diameter

dr	Shaft Dia.	Housing Dia.
dr	g6 Tolerance		Tolerance
6	−0.004 −0.012	10	+0.024 +0.006
8	−0.005 −0.014	13	+0.024 +0.006
10	−0.005 −0.014	17	+0.027 +0.006
12	−0.006 −0.017	19
16	−0.006 −0.017	26

Cautions/Prohibitions

■Regular Maintenance
(1) For grease lubrication, apply grease to the ball rows within the linear bushings before use, then periodically apply grease during the use.
The grease has an effect of reducing friction by forming a layer between the balls and shaft rolling surfaces, preventing seizures.
Grease loss and deterioration will cause shorter life of linear guides.
(2) Recommended Grease: Lithium soap based grease
(3) Recommended Lubrication Intervals: Every 6 month
Recommended lubrication is that every 3 months when travel distance is extensive, or every 1000 km when travel distance exceeds 1000 km within the period.
(4) If large moment load (offset load) is to be applied, Short / Single Type Linear Bushings are not suitable.
Use of Double Type or Multiple Linear Bushings is recommended.

■Dust-Proofing Measures
Please be aware that if foreign objects or dusts get inside the linear bushing, it will interfere with the circulation of the steel balls and cause failures.
Please attach a dust cover or protection cover for harsh usage environments.

■Use of a hardened shaft with g6 tolerance is recommended for MISUMI Linear Bushings.

How to Use

Illustration	Instructions for Use
	If large load (offset load) is to be applied, Single Type Linear Bushings are not suitable. Use of Double Type or Multiple Linear Bushings is recommended.
	Linear Bushings are not suitable for rotating motion due to their structure. Forcing to rotate may cause failures.
	Linear Bushings are not suitable for usage with repetitive insertion and extraction of shafts.
	When assembling with linear shafts, forcing the shaft into the bushing with angular misalignment may cause the ball retainers to deform and balls to fall out. Be sure to align the centers and insert the shaft gently.

App. Example

▲Oil Seal Press Fitting Jig