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SPECIFICATIONS |
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IZUMOTO SEIKO CO.,
LTD. |
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MATERIAL |
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TOLERANCES |
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INTERNAL CLEARANCE |
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CHAMFER DIMENSION |
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SNAP
RING |
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LUBIRICATION |
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RETURN |
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| 高炭素クロム軸受鋼 |
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ベアリングの外内輪、ボールの標準的な材料は高炭素クロム軸受鋼(SUJ-2)で、これは、均一な高硬度が得られ、耐転がり疲れ、 |
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耐摩耗性に特にすぐれた材料です。IKSでは真空溶解、脱ガスなどの工程を経て製造された、介在物、不純物の特に少ない材料を |
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選んで使用しています。 |
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| High
Carbon Chromium Bearing Steel |
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The standard material of outer,
inner ring and ball of bearing is High Carbon Chromium Bearing Steel which
provide |
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uniformly high hardness, and
resistance to abrasive wear. IKS
uses the high carbon chromium bearing steel |
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manufactured by modern process with
lowest non-metallic inclusion such as vacuum melting degassing process. |
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Symbol |
Chemical Composition(%) |
Rockwell C |
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C |
Si |
Mn |
P |
S |
Cr |
Hardness |
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SUJ-2 |
0.95〜1.10 |
0.15〜0.35 |
0.50max |
0.025max |
0.025max |
1.30〜1.60 |
60〜64 |
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| 低炭素鋼 |
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外内輪及びボールが高炭素クロム軸受鋼の場合の保持器の材料です。 |
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| Low
Carbon Cold Rolled Steel |
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The material for retainers in case
of High Carbon Chromium Bearing Steel as outer, inner ring and ball. |
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Symbol |
Chemical Composition(%) |
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C |
Si |
Mn |
P |
S |
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SPC-1 |
0.12max |
0 |
0.50max |
0.04max |
0.045max |
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| ステンレス鋼 |
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耐食性が強く要求される用途のために、ステンレス鋼(SUS440C)を材料としたベアリングを用意しております。ステンレス製ベアリン |
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グは準高温用（260ﾟC以下）、耐水性、耐水蒸気性、耐塩性にもすぐれた製品です。しかし、ステンレス製ベアリングは、通常のボー |
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ルベアリングに較べ、硬度が低いため、その負荷容量は約20%減少します。 |
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| Stainless
Steel |
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Stainless Steel is also used for
various types of anti-corrosion ball bearings. |
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Symbol |
Chemical Composition(%) |
Rockwell C |
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C |
Si |
Mn |
P |
S |
Cr |
Mo |
Hardness |
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SUS440C |
0.95〜1.20 |
1.00max |
1.00max |
0.040max |
0.030max |
16.00〜18.00 |
0.75max |
58〜62 |
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| 低炭素ステンレス鋼 |
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外内輪及びボールがステンレス鋼の場合の保持器の材料です。なお、ナイロンリテナーの場合もあります。 |
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| Low
Carbon Stainless Steel |
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The material for retainers in case
of Stainless Steel as outer, inner ring
and ball. |
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Symbol |
Chemical Composition(%) |
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C |
Si |
Ni |
Cr |
Mn |
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SUS304 |
0.08max |
1.0max |
8.00〜11.00 |
18.00〜20.00 |
2.00max |
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TOP of PAGE |
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| 主寸法公差 |
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IKSの標準的なメトリック系のベアリングはすべてJISに基づいて生産されております。また、このJIS規格はISO規格にも合致して |
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おります。主寸法（内径、外径、幅）の各公差は内径、外径により異なりますので下記を参照下さい。 |
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The standard metric dimension IKS
bearings are manufactured based on Japan Industrial Standard(JIS) which
conforms |
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to ISO Standards. |
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Tolerances of boundary dimensions
(Bore, Outside Diameter, Width) depend on its Bore or Outside Diameter as the
following |
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tables. |
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Inner Ring Tolerances for
Radial Ball Bearings (Class 0) |
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Bore Diameter(mm) |
Bore Tolerances |
Width Tolerances |
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dm 1) |
d 2) |
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Over |
Incl. |
High |
Low |
High |
Low |
High |
Low |
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2.5 |
10 |
0 |
-8 |
+2 |
-10 |
0 |
-120 |
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10 |
18 |
0 |
-8 |
+3 |
-11 |
0 |
-120 |
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18 |
30 |
0 |
-10 |
+3 |
-13 |
0 |
-120 |
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30 |
50 |
0 |
-12 |
+3 |
-15 |
0 |
-120 |
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in 0.001mm |
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dm 1) |
軸受内径の2点測定によって得られた最大直径と最小直径との算術平均値。 |
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dm is
defined as the arithmetical average of the largest and the smallest single
diameter of the bore obtained by |
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two -point measurements. |
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d 2) |
2点測定による値。直径系列 0,2,3に適用する。ただし、直径系列0では d>40mmに適用しない。 |
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The values of deviation of d are valid for two-point measurements
only. |
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Deviation of d for class 0 apply only to diameter series 0,2,3, and do not
apply to over 40mm of d in
diameter |
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series 0. |
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Outer Ring Tolerances for
Radial Ball Bearings (Class 0) |
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Outside Diameter(mm) |
Outside Diameter Tolerances |
Width Tolerances |
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Dm 3) |
D 4) |
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Over |
Incl. |
High |
Low |
High |
Low |
High |
Low |
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6 |
18 |
0 |
-8 |
+2 |
-10 |
0 |
-120 |
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18 |
30 |
0 |
-9 |
+2 |
-11 |
0 |
-120 |
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30 |
50 |
0 |
-11 |
+3 |
-14 |
0 |
-120 |
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50 |
80 |
0 |
-13 |
+4 |
-17 |
0 |
-120 |
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80 |
120 |
0 |
-15 |
+5 |
-20 |
0 |
-120 |
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in 0.001mm |
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Dm 3) |
軸受外径の2点測定によって得られた最大直径と最小直径との算術平均値。 |
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Dm is
defined as the arithmetical average of the largest and the smallest single
diameter of the outside diameter |
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obtained by two -point measurements. |
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D 4) |
2点測定による値。ただし、止め輪付軸受、シール及びシールド軸受では、止め輪、シール及びシールドを |
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取り付ける前の値。 |
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直径系列 0,2,3に適用する。ただし、直径系列0では D>80mmに適用しない。 |
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The values of deviation of D are valid for two-point measurements
only, and applicable for bearings with |
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locating snap ring, sealed bearings,
shield bearings before snap ring, seals, shields are fitted. |
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Deviation of D for class 0 apply only to diameter series 0,2,3, and do not
apply to over 80mm of D in
diameter |
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series 0. |
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TOP of PAGE |
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| 内部スキマ |
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IKSでは、各用途に合わせて、ラジアルスキマの小さいものから大きいものまで用意されています。 |
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又、モーター用としてCMスキマや、C0とC3兼用のCSスキマも用意しています。 |
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Small to big clearance are available
for various applications. |
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Also, CM clearance for motor quality
and CS applied for both of C0 and C3 are available. |
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Standard for Radial
Internal Clearances of Single Row Radial Contact Bearings |
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Bore(mm) |
Internal Radial Clearnace |
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C2 |
C0 |
C3 |
C4 |
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Over |
Incl. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
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2.5 |
10 |
7 |
2 |
13 |
8 |
23 |
14 |
29 |
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10 |
18 |
9 |
3 |
18 |
11 |
25 |
18 |
33 |
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18 |
24 |
10 |
5 |
20 |
13 |
28 |
20 |
36 |
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24 |
30 |
11 |
5 |
20 |
13 |
28 |
23 |
41 |
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30 |
40 |
11 |
6 |
20 |
15 |
33 |
28 |
46 |
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40 |
50 |
11 |
6 |
23 |
18 |
36 |
30 |
51 |
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in 0.001mm |
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IKS Special for Radial
Internal Clearances of Single Row Radial Contact Bearings |
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Bore(mm) |
Internal Radial Clearance |
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CM |
CS |
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Over |
Incl. |
Min. |
Max. |
Min. |
Max. |
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2.5 |
10 |
- |
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8 |
13 |
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10 |
18 |
4 |
11 |
11 |
18 |
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18 |
24 |
5 |
12 |
13 |
20 |
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24 |
30 |
5 |
12 |
13 |
20 |
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30 |
40 |
9 |
17 |
15 |
20 |
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40 |
50 |
9 |
17 |
18 |
23 |
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in 0.001mm |
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Standard for Radial
Internal Clearance of Self-Alighning Bearings |
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Bore(mm) |
Internal Radial Clearnace |
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C2 |
C0 |
C3 |
C4 |
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Over |
Incl. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
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6 |
10 |
2 |
9 |
6 |
17 |
12 |
25 |
19 |
33 |
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10 |
14 |
2 |
10 |
6 |
19 |
13 |
26 |
21 |
35 |
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14 |
18 |
3 |
12 |
8 |
21 |
15 |
28 |
23 |
37 |
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18 |
24 |
4 |
14 |
10 |
23 |
17 |
30 |
25 |
39 |
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24 |
30 |
5 |
16 |
11 |
24 |
19 |
35 |
29 |
46 |
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30 |
40 |
6 |
18 |
13 |
29 |
23 |
40 |
34 |
53 |
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40 |
50 |
6 |
19 |
14 |
31 |
25 |
44 |
37 |
57 |
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in 0.001mm |
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| スキマの測定荷重による増加量 |
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深溝玉軸受におけるスキマの測定荷重の大きさは、その内径によって定められており、また、それによって生ずるラジアルスキマの |
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増加量は、下記の表通りです。 |
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| Radial
Clearance Increase by Measuring Load |
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Measuring load of radial ball
bearing internal clearance is defined as the bore size, and the inclease is
as follows. |
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Bore(mm) |
Measuring |
Inclease of Clearance |
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Over |
Incl. |
Load(kg) |
C2 |
C0 |
C3 |
C4 |
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10 |
18 |
2.5 |
3〜4 |
4 |
4 |
4 |
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18 |
50 |
5 |
4〜5 |
5 |
6 |
6 |
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in 0.001mm |
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TOP of PAGE |
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| CHAMFER
DIMENSION |
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| 面寸法 |
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カタログ内の面寸法 r の呼寸法に対する各面幅及び公差は下記の通りです。 |
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Chamfer width and tolerance against
nominal chamfer dimension in catalogue is as follows. |
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For Metric Type |
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Nominal |
r min |
r max |
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r |
Radial |
Axial |
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0.4 |
0.2 |
0.5 |
0.7 |
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0.5 |
0.3 |
0.6 |
0.8 |
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0.8 |
0.5 |
0.8 |
1.2 |
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1.0 |
0.6 |
1.0 |
1.5 |
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1.5 |
1.0 |
1.5 |
2.1 |
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2.0 |
1.5 |
2.0 |
2.7 |
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2.5 |
2.0 |
2.5 |
3.3 |
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3.0 |
2.5 |
3.0 |
4.0 |
in mm |
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For Inch Type |
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Nominal |
r min |
r max |
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r |
Radial |
Axial |
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0.016 |
0.008 |
0.020 |
0.028 |
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0.031 |
0.020 |
0.031 |
0.047 |
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0.039 |
0.024 |
0.039 |
0.060 |
in inch |
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TOP of PAGE |
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