Flanged Linear Bushing - Standard, Medium[RoHS Compliant]

:
MISUMI

  • 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.

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

Dimensional Drawing of Linear Bushings

Linear Bushings
Type Linear Bushings
Outer Cylinder
Balls
Retainer
Operating Ambient Temperature
[A] Accessory
Round Flange
Square flange
Compact Flange
[M] Material
[H] Hardness
[S] Surface Treatment
[M] Material
[M] Material
C-LHFRD
C-LHFSD
C-LHFCD
SUJ2 Equivalent
58HRC or more
SUJ2 Equivalent
Plastic
-20 to 80°C
Seal [M] Material
Nitrile Rubber
C-LHFSDM
C-LHFCDM
Electroless Nickel Plating

Specification Table of Linear Bushings

Ordering Example of Linear Bushings
Part Number (Type, dr)
C-LHFSD20
C-LHFCDM30
 
dr
 
D
 
 
L
H
(T)
d
d1
t
P.C.D
W
F
A
K
Eccentricity
Balls
Rows
*
Perpendicularity
Basic Load Rating of Linear Bushings
Allowable Static Moment
(N⋅m)
Reference Mass (g)
 
 
 
Surface Treatment
Surface Treatment
 
 
 
Tolerance
 
Not Provided
Provided
 
Tolerance
C (Dynamic) N
Co (Static) N
Round Flange
Square flange
Compact Flange
 
 
 
Tolerance
Tolerance
 
 
6
+0.003
-0.013
12
+0.006
-0.015
+0.006
-0.020
29
±0.6
28
5
3.5
6
3.1
20
22
20
18
0.03
4
0.03
226
310
18
27
21
24
8
15
37
32
24
25
24
21
310
452
21
47
47
43
10
19
+0.006
-0.018
+0.006
-0.023
47
40
6
4.5
7.5
4.1
29
30
29
25
508
718
25
85
65
77
12
21
42
32
32
32
27
634
814
27
89
69
81
13
23
43
33
34
33
29
640
826
29
109
87
102
16
28
56
48
38
37
22
31
34
5
1164
1448
34
157
132
149
20
+0.003
-0.015
32
+0.006
-0.021
+0.006
-0.027
65
54
8
5.5
9
5.1
43
42
24
36
38
0.04
0.04
1554
2068
38
232
197
219
25
40
83
62
51
50
32
40
46
6
1725
3068
46
479
440
450
30
45
90
74
10
6.6
11
6.1
60
58
35
49
51
2440
3974
51
559
481
492
* Perpendicularity of D to flange mounting surface
[ ! ] Anti-rust oil is appliedat the time of delivery.
[ ! ] Flanged Type Height-Adjusting Spacers can beselected fromhere.
[ ! ]Linear Bushings, For shaft and housing tolerances, see "Recommended Tolerance of ShaftDiameter / Housing Diameter."
kgf = N × 0.101972
■Linear Bushings Recommended Tolerance of Shaft Diameter / Housing Diameter
dr
Shaft Dia.
Housing Dia.
g6 Tolerance
 
Tolerance
6
−0.004
−0.012
12
+0.024
+0.006
8
−0.005
−0.014
15
10
19
+0.027
+0.006
12
−0.006
−0.017
21
13
23
16
28
20
−0.007
−0.020
32
+0.031
+0.006
25
40
30
45
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
IllustrationInstructions for Use
How to UseIf 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.
How to UseLinear Bushings are not suitable for rotating motion due to their structure. Forcing to rotate may cause failures.
How to UseLinear Bushings are not suitable for usage with repetitive insertion and extraction of shafts.
How to UseWhen 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.