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调心滚子轴承 (GB/T 288—2013) |
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径向当量动载荷:当Fa/Fr≤e 时,Pr=Fr+Y1Fa 当Fa/Fr>e 时,Pr=0.67Fr+Y2Fa 径向当量静载荷:P0r=Fr+Y0Fa 符号含义及应用 CC—内圈无挡边,带活动中挡圈,冲压保持架,滚子和滚道经优化设计的结构,有助于滚子引导,减少摩擦发热 K—圆锥孔,锥度1:12 K30—圆锥孔,锥度1:30 W33—轴承外圈上有润滑油槽和三个油孔 TN—工程塑料成形保持架 能自动调心,主要承受径向载荷,同时也能承受双向轴向载荷。锥孔者,可装在紧定套或退卸套上,便于在光轴上或阶梯轴上任何位置安装,也可调整轴承的径向游隙。 应优先选用结构经优化设计的20000CC型和20000TN型产品。 |
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基本尺寸/mm |
基本额定 载荷/kN |
极限转速 /r·min-1 |
重量 /kg |
轴承代号 |
其他尺寸 /mm |
安装尺寸/mm |
计算系数 |
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d |
D |
B |
Cr |
C0r |
脂 |
油 |
W ≈ |
20000 型 |
20000 K 型 |
20000 K30 型 |
d2 ≈ |
D2 ≈ |
B0 |
r min |
da min |
Da max |
ra max |
e |
Y1 |
Y2 |
Y0 |
|
20 |
52 |
15 |
31.5 |
31.2 |
6000 |
7500 |
0.175 |
21304 |
21304K |
|
29.5 |
42 |
— |
1.1 |
27 |
45 |
1 |
0.31 |
2.2 |
3.3 |
2.2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
52 |
18 |
36.8 |
36.8 |
8000 |
10000 |
0.177 |
22205 |
22205K |
|
30.9 |
43.9 |
5.5 |
1 |
30 |
46 |
1 |
0.35 |
1.9 |
2.9 |
1.9 |
|
|
62 |
17 |
42.5 |
44.2 |
5300 |
6700 |
0.277 |
21305 |
21305K |
|
36.4 |
50.8 |
— |
1.1 |
32 |
55 |
1 |
0.29 |
2.4 |
3.5 |
2.3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
30 |
62 |
20 |
51.8 |
55.0 |
6700 |
8500 |
0.283 |
22206 |
22206K |
|
37.9 |
52.7 |
5.5 |
1 |
36 |
56 |
1 |
0.32 |
2.1 |
3.1 |
2.1 |
|
|
72 |
19 |
57.2 |
62.0 |
4500 |
6000 |
0.412 |
21306 |
21306K |
|
43.3 |
59.6 |
— |
1.1 |
37 |
65 |
1 |
0.27 |
2.5 |
3.7 |
2.4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
35 |
72 |
23 |
70.2 |
79.0 |
5600 |
7000 |
0.437 |
22207 |
22207K |
|
44.1 |
60.9 |
5.5 |
1.1 |
42 |
65 |
1 |
0.32 |
2.1 |
3.2 |
2.1 |
|
|
80 |
21 |
65.2 |
73.2 |
4000 |
5300 |
0.542 |
21307 |
21307K |
|
49.1 |
66.3 |
— |
1.5 |
44 |
71 |
1.5 |
0.27 |
2.5 |
3.8 |
2.5 |
|
|
80 |
31 |
|
|
|
|
|
22307 |
22307K |
|
|
|
|
1.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
40 |
80 |
23 |
79.0 |
88.5 |
5000 |
6300 |
0.524 |
22208 |
22208K |
|
50.4 |
69.4 |
5.5 |
1.1 |
47 |
73 |
1 |
0.28 |
2.4 |
3.6 |
2.4 |
|
|
90 |
23 |
87.2 |
96.2 |
3600 |
4500 |
0.743 |
21308 |
21308K |
|
54.0 |
75.1 |
— |
1.5 |
49 |
81 |
1.5 |
0.26 |
2.6 |
3.8 |
2.5 |
|
|
90 |
33 |
122 |
138 |
4500 |
6000 |
1.02 |
22308 |
22308K |
|
51.4 |
74.3 |
5.5 |
1.5 |
49 |
81 |
1.5 |
0.38 |
1.8 |
2.7 |
1.8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
45 |
85 |
23 |
82.8 |
95.2 |
4500 |
6000 |
0.571 |
22209 |
22209K |
|
54.6 |
73.6 |
5.5 |
1.1 |
52 |
78 |
1 |
0.26 |
2.6 |
3.8 |
2.5 |
|
|
100 |
25 |
102 |
115 |
3200 |
4000 |
1.0 |
21309 |
21309K |
|
61.4 |
84.4 |
— |
1.5 |
54 |
91 |
1.5 |
0.25 |
2.7 |
4.0 |
2.6 |
|
|
100 |
36 |
145 |
170 |
4000 |
5300 |
1.37 |
22309 |
22309K |
|
57.6 |
82.2 |
5.5 |
1.5 |
54 |
91 |
1.5 |
0.37 |
1.8 |
2.7 |
1.8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
50 |
90 |
23 |
86.0 |
102 |
4300 |
5300 |
0.614 |
22210 |
22210K |
|
59.7 |
78.8 |
5.5 |
1.1 |
57 |
83 |
1 |
0.24 |
2.8 |
4.1 |
2.7 |
|
|
110 |
27 |
122 |
140 |
2800 |
3800 |
1.3 |
21310 |
21310K |
|
66.7 |
91.7 |
— |
2 |
60 |
100 |
2 |
0.25 |
2.7 |
4.0 |
2.6 |
|
|
110 |
40 |
182 |
212 |
3800 |
4800 |
1.79 |
22310 |
22310K |
|
63.4 |
91.9 |
5.5 |
2 |
60 |
100 |
2 |
0.37 |
1.8 |
2.7 |
1.8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
55 |
100 |
25 |
105 |
125 |
3800 |
5000 |
0.847 |
22211 |
22211K |
|
66 |
88 |
5.5 |
1.5 |
64 |
91 |
1.5 |
0.24 |
2.8 |
4.2 |
2.8 |
|
|
120 |
29 |
145 |
170 |
2600 |
3400 |
1.65 |
21311 |
21311K |
|
72.6 |
100.5 |
— |
2 |
65 |
110 |
2 |
0.25 |
2.7 |
4.1 |
2.7 |
|
|
120 |
43 |
215 |
252 |
3400 |
4300 |
2.31 |
22311 |
22311K |
|
69.2 |
100.5 |
5.5 |
2 |
65 |
110 |
2 |
0.36 |
1.9 |
2.8 |
1.8 |
|
|
注:1.GB/T288已有新尺寸标注GB/T288-2013,新标准删除了原标准部分结构、紧定套相关尺寸和保持架代号。增加了38、39、40、49系列的外形尺寸,增加了22/23、系列密封轴承结构及其外形尺寸。本表数据结构符合《全国滚动轴承产品样本》第2版。 2.代号不包括结构变化附加代号,结构如有加油槽或油孔等变化,需与厂家联接。 |
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