

公差与配合(摘自GB1800~1804-79
1. 基本偏差系列及配合种类
.2.标准公差值及孔和轴的极限偏差值
标准公差值(基本尺寸大于6至500mm)
基本尺寸mm |
公 差 等 级 | |||||||
IT5 |
IT6 |
IT7 |
IT8 |
IT9 |
IT10 |
IT11 |
IT12 | |
<6~10 <10~18 <18~30 <30~50 <50~80 <80~120 <120~180 <180~250 <250~315 <315~400 <400~500 |
6 8 9 11 13 15 18 20 23 25 27 |
9 11 13 16 19 22 25 29 32 36 40 |
15 18 21 25 30 35 40 46 52 57 63 |
22 27 33 39 46 54 63 72 81 89 97 |
36 43 52 62 74 87 100 115 130 140 155 |
58 70 84 100 120 140 160 185 210 230 250 |
90 110 130 160 190 220 250 290 320 360 400 |
150 180 210 250 300 350 400 460 520 570 630 |
孔的极限差值(基本尺寸由大于10至315mm) μm
公差带 |
等 级
|
基本尺寸mm | ||||||||
<0~18 |
<18~30 |
<30~50 |
<50~80 |
<80~120 |
<120~180 |
<180~250 |
<250~315 | |||
D |
8 |
+77 +50 |
+98 +65 |
+119 +80 |
+146 +100 |
+174 +120 |
+208 +145 |
+242 +170 |
+271 +190 | |
▼9 |
+93 +50 |
+117 +65 |
+142 +80 |
+174 +100 |
+207 +120 |
+245 +145 |
+285 +170 |
+320 +190 | ||
10 |
+120 +50 |
+149 +65 |
+180 +80 |
+220 +100 |
+260 +120 |
+305 +145 |
+355 +170 |
+400 +190 | ||
11 |
+160 +50 |
+195 +65 |
+240 +80 |
+290 +100 |
+340 +120 |
+395 +145 |
+460 +170 |
+510 +190 | ||
E |
6 |
+43 +32 |
+53 +40 |
+66 +50 |
+79 +60 |
+94 +72 |
+110 +85 |
+129 +100 |
+142 +110 | |
7 |
+50 +32 |
+61 +40 |
+75 +50 |
+90 +60 |
+107 +72 |
+125 +85 |
+146 +100 |
+162 +110 | ||
8 |
+59 +32 |
+73 +40 |
+89 +50 |
+106 +60 |
+126 +72 |
+148 +85 |
+172 +100 |
+191 +110 | ||
9 |
+75 +32 |
+92 +40 |
+112 +50 |
+134 +60 |
+159 +72 |
+185 +85 |
+215 +100 |
+240 +110 | ||
10 |
+102 +32 |
+124 +40 |
+150 +50 |
+180 +60 |
+212 +72 |
+245 +85 |
+285 +100 |
+320 +110 | ||
F |
6 |
+27 +16 |
+33 +20 |
+41 +25 |
+49 +30 |
+58 +36 |
+68 +43 |
+79 +50 |
+88 +56 | |
7 |
+34 +16 |
+41 +20 |
+50 +25 |
+60 +30 |
+71 +36 |
+83 +43 |
+96 +50 |
+108 +56 | ||
▼8 |
+43 +16 |
+53 +20 |
+64 +25 |
+76 +30 |
+90 +36 |
+106 +43 |
+122 +50 |
+137 +56 | ||
9 |
+59 +16 |
+72 +20 |
+87 +25 |
+104 +30 |
+123 +36 |
+143 +43 |
+165 +50 |
+186 +56 | ||
H |
6 |
+11 0 |
+13 0 |
+16 0 |
+19 0 |
+22 0 |
+25 0 |
+29 0 |
+32 0 | |
▼7 |
+18 0 |
+21 0 |
+25 0 |
+30 0 |
+35 0 |
+40 0 |
+46 0 |
+52 0 | ||
▼8 |
+27 0 |
+33 0 |
+39 0 |
+46 0 |
+54 0 |
+63 0 |
+72 0 |
+81 0 | ||
▼9 |
+43 0 |
+52 0 |
+62 0 |
+74 0 |
+87 0 |
+100 0 |
+115 0 |
+130 0 | ||
|
10 |
+70 0 |
+84 0 |
+100 0 |
+120 0 |
+140 0 |
+160 0 |
+185 0 |
+210 0 | ||
▼11 |
+110 0 |
+130 0 |
+160 0 |
+190 0 |
+220 0 |
+250 0 |
+290 0 |
+320 0 | ||
K |
6 |
+2 -9 |
+2 -11 |
+3 -13 |
+4 -15 |
+4 -18 |
+4 -21 |
+5 -24 |
+5 -27 | |
▼7 |
+6 -12 |
+6 -15 |
+7 -18 |
+9 -21 |
+10 -25 |
+12 -28 |
+13 -33 |
+16 -36 | ||
8 |
+8 -19 |
+10 -23 |
+12 -27 |
+14 -32 |
+16 -38 |
+20 -43 |
+22 -50 |
+25 -56 | ||
N |
6 |
-9 -20 |
-11 -28 |
-12 -24 |
-14 -33 |
-16 -38 |
-20 -45 |
-22 -51 |
-25 -57 | |
▼7 |
-5 -23 |
-7 -28 |
-8 -33 |
-9 -39 |
-10 -45 |
-12 -52 |
-14 -60 |
-14 -66 | ||
8 |
-3 -30 |
-3 -36 |
-3 -42 |
-4 -50 |
-4 -58 |
-4 -67 |
-5 -77 |
-5 -86 | ||
P |
6 |
-15 -26 |
-18 -31 |
-21 -37 |
-26 -45 |
-30 -52 |
-36 -61 |
-41 -70 |
-47 -79 | |
▼7 |
-11 -29 |
-14 -35 |
-17 -42 |
-21 -51 |
-24 -59 |
-28 -68 |
-33 -79 |
-36 -88 |