| Recomended Tolerance of Housing bore for SAMICK Linear
Bushing are in Table. Normal fit is standard, but for without clearacnce,
pressed fit is also available. |
| Type |
Case |
| Part number |
Grade |
Normal fit |
Pressed fir |
| LM |
Higher(H) |
H7 |
J7 |
| LME |
- |
H7 |
K6,J6 |
LMF/FP
LMK/KP
LMH/HP
LM_L
LMF/FP_L
LKM/KP_L
LMH/HP_L
LMFM |
- |
H7 |
J7 |
|
 |
Normal fit is standard for using of Linear Bushing with
LM shaft. And for without clearance, tight fit is available.
Next table shows outer diameter tolerance of shaft. |
| Type |
LM Shaft |
| Part Number |
Grade |
Normal fit |
Thgh fit |
| LM |
Higher(H) |
f6,g6 |
h6 |
| LME |
- |
h7 |
K6 |
LMF/FP
LMK/KP
LMH/HP
LM_L
LMF/FP_L
LKM/KP_L
LMH/HP_L
LMFM |
- |
f6,g6 |
h6 |
|
| Negative diametric clearance should not exceed what
is specified in the dimensiontable. |
| Radical Clearance(㎛) |
| Dr. |
5 |
6 |
8S |
8 |
10 |
12 |
13 |
16 |
20 |
25 |
30 |
35 |
40 |
50 |
60 |
| LM(㎛) |
-3 |
-5 |
-5 |
-5 |
-5 |
-5 |
-7 |
-7 |
-9 |
-9 |
-9 |
-13 |
-13 |
-13 |
-16 |
| LME(㎛) |
-5 |
|
|
-5 |
|
-7 |
|
-7 |
-9 |
-9 |
-9 |
|
-13 |
-13 |
-16 |
|
 |
| High holding strength toward LM shaft direction is not
required, but just press fit only for mounting is not recommended. |
 |
| Feasible mountin methods are illustrated in Fig 8 and
Fig 9. At this moment, fix the linear bushing with retaining rings
and cover plates. |
 |
 |
| Retaining ring for LM type SAMICK Linear Bushing are
used for mounting as shown in the table below. |
| Part number |
Retaining ring(mm) |
| External(for shaft) |
Internal(for Bore) |
| C type |
Needle type |
C type |
Needle type |
| LM 5 |
10 |
10 |
10 |
10 |
| LM 6 |
12 |
12 |
12 |
12 |
| LM 8 |
- |
15 |
15 |
15 |
| LM 8S |
- |
15 |
15 |
15 |
| LM 10 |
19 |
19 |
19 |
19 |
| LM 12 |
21 |
21 |
21 |
21 |
| LM 13 |
23 |
22 |
23 |
- |
| LM 16 |
28 |
- |
28 |
28 |
| LM 20 |
32 |
- |
32 |
32 |
| LM 25 |
40 |
40 |
40 |
40 |
| LM 30 |
45 |
45 |
45 |
45 |
| LM 35 |
52 |
52 |
52 |
52 |
| LM 40 |
- |
60 |
60 |
60 |
| LM 50 |
- |
80 |
80 |
80 |
| LM 60 |
- |
90 |
90 |
90 |
|
| Note ) The information in the table are common for LM
and LM -L type. |
 |
| Mounting a Linear Bushing with a set screw
as shown in Figure will cause deformation of the outer sleeve and
should be avoided. |
 |
 |
| Mounting for LMF, LMK, LMH (included long type), only
mounting the flange with mounting bolt can be all of mounting because
of its single body shape. Geometric Dimensional Tolerance should be
considered when the Outer Sleeve is the datum for installation. |
 |
 |
 |
| Adjustment of clearance for Adjustable type (AJ) and
LM shaft can be obtained by assembling with the adjustable type Housing,.
In this case, the slotted side of Linear Bushing should be located
at 90˚ of open side of Housing for equivalent deformation against
radial direction. |
 |
 |
| Open type(..OP) also can be used with clearance adjustable
housing as shown on Figure, Light pre-load is applied for normal using,
but heavy pre-load should be avoided. |
 |
 |
| Shaft support, SK can be mounted with mounting bolt
for table, and LM shaft can be mounted with tightening bolt. |
 |
 |
| Monting of SC type Both side mounting of
SC(E), SC(E)_W, SC(E)_V type from the top and the bottom side with
mountng bolt are both available and it gives you minimum mounting
time. |
 |
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