30BspaceOILES #300 Bush (thin-walled type)
Please select part no. referring to the internal diameter, the outside diameter and the length.
Ex. Internal diameter 8mm, Outside diameter 10mm, Length 12mm

30B- 081012T
Please indicate by part no.
Please use OILES#300 in oil or the periodical oiling/lubrication is required.
image image image image
I.D. O.D.
L space0
-0.2
I.D. After Press-Fitting
faid faiD 5 6 8 10 12 15 20 30 80
5 +0.058
+0.040		 7 +0.034
+0.019		 050705 050706 050708 +0.030
+0.012
6 " 8 " 060805 060806 060808 060810 "
8 +0.062
+0.040		 10 " 081006 081008 081010 081012 +0.034
+0.012
10 +0068
+0.046		 12 +0.041
+0.023		 101208 101210 101212 101215 "
12 +0.081
+0.054		 14 " 121408 121410 121412 121415 121420 +0.047
+0.020
" " 16 " 121608 121610 121612 121615 121620 "
14 " " " 141610 141612 141615 141620 "
" " 18 " 141810 141812 141815 141820 "
16 " " " 161810 161815 161820 "
" +0.089
+0.062		 20 +0.049
+0.028		 162010 162015 162020 "
18 " 22 " 182220 182230 "
20 +0.105
+0.072		 24 " 202420 202430 +0.063
+0.030
*Letters in red indicate newly added part no.
*Please note that tolerance of I.D. after press-fitting is a reference value.
Method of press-fitting

Regarding press-fitting jig

Apply mandrel for regular press-fitting, as shown in figure-1.
By using a guide ring as shown in figure-2, press-fitting method will be smoother.
Some of the merits in using a guide ring are: prevention of damage to bush within press-fitting,
enabling more precise level of roundness and central position after press-fitting, etc.

 写真05
Please calculate dimension of mandrel from the table below.
Nominal dimension of bush Dimension of mandrel
I.D.　D0  d0 = D0 － (0.05 to 0.10)
O.D.　D1  d1 = D1 － (0.20 to 0.30)
Length　L l≧ L
Please calculate dimension of guide ring from the table below.
Dimension of Bush I.D.
 Dimension of guide ring I.D. Dimension of guide ring O.D.
～Ф20 D1 + (0.1 ~ 0.3) D1 + (10 ~ 15)
写真06 写真07

Regarding housing chamfer

Either R-chamfering or a tapered chamfering is recommended for a housing.
In cases of C-chamfering (more than C1.0), check that there is no burr on housing surface after chamfering. The use of oil or grease facilitates smoother press-fitting.

Method of press-fitting

Please use hydraulic pressure, pneumatic pressure, or a vice for press-fitting. Avoid methods of press-fitting which engage physical impact such as fitting by a hammer, that may cause damage to bush, or the changes in inside diameter of bush.
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