公差速查
输入基本尺寸和 IT 等级,查询标准公差值(依据 GB/T 1800)
标准公差数值总表(IT01-IT18 × 21 尺寸段,单位 μm):
| 尺寸段 (mm) | IT01 | IT0 | IT1 | IT2 | IT3 | IT4 | IT5 | IT6 | IT7 | IT8 | IT9 | IT10 | IT11 | IT12 | IT13 | IT14 | IT15 | IT16 | IT17 | IT18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| -3mm | 0 | 1 | 1 | 1 | 2 | 3 | 4 | 6 | 10 | 14 | 25 | 40 | 60 | 100 | 140 | 250 | 400 | 600 | 1,000 | 1,400 |
| 3-6mm | 0 | 1 | 1 | 2 | 3 | 4 | 5 | 8 | 12 | 18 | 30 | 48 | 75 | 120 | 180 | 300 | 480 | 750 | 1,200 | 1,800 |
| 6-1mm | 0 | 1 | 1 | 2 | 3 | 4 | 6 | 9 | 15 | 22 | 36 | 58 | 90 | 150 | 220 | 360 | 580 | 900 | 1,500 | 2,200 |
| 1-18mm | 1 | 1 | 1 | 2 | 3 | 5 | 8 | 11 | 18 | 27 | 43 | 70 | 110 | 180 | 270 | 430 | 700 | 1,100 | 1,800 | 2,700 |
| 18-3mm | 1 | 1 | 2 | 3 | 4 | 6 | 9 | 13 | 21 | 33 | 52 | 84 | 130 | 210 | 330 | 520 | 840 | 1,300 | 2,100 | 3,300 |
| 3-5mm | 1 | 1 | 2 | 3 | 4 | 7 | 11 | 16 | 25 | 39 | 62 | 100 | 160 | 250 | 390 | 620 | 1,000 | 1,600 | 2,500 | 3,900 |
| 5-8mm | 1 | 1 | 2 | 3 | 5 | 8 | 13 | 19 | 30 | 46 | 74 | 120 | 190 | 300 | 460 | 740 | 1,200 | 1,900 | 3,000 | 4,600 |
| 8-12mm | 1 | 2 | 3 | 4 | 6 | 10 | 15 | 22 | 35 | 54 | 87 | 140 | 220 | 350 | 540 | 870 | 1,400 | 2,200 | 3,500 | 5,400 |
| 12-18mm | 1 | 2 | 4 | 5 | 8 | 12 | 18 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | 1,000 | 1,600 | 2,500 | 4,000 | 6,300 |
| 18-25mm | 2 | 3 | 5 | 7 | 10 | 14 | 20 | 29 | 46 | 72 | 115 | 185 | 290 | 460 | 720 | 1,150 | 1,850 | 2,900 | 4,600 | 7,200 |
| 25-315mm | 25 | 40 | 45 | 55 | 70 | 90 | 115 | 140 | 210 | 330 | 540 | 860 | 1,350 | 2,100 | 3,300 | 5,400 | 8,600 | 13,500 | 21,000 | 33,000 |
| 315-4mm | 3 | 5 | 7 | 9 | 13 | 18 | 25 | 36 | 57 | 89 | 140 | 230 | 360 | 570 | 890 | 1,400 | 2,300 | 3,600 | 5,700 | 8,900 |
| 4-5mm | 4 | 6 | 8 | 10 | 15 | 20 | 27 | 40 | 63 | 97 | 155 | 250 | 400 | 630 | 970 | 1,550 | 2,500 | 4,000 | 6,300 | 9,700 |
| 5-63mm | 5 | 8 | 10 | 12 | 18 | 25 | 32 | 45 | 70 | 110 | 175 | 280 | 440 | 700 | 1,100 | 1,750 | 2,800 | 4,400 | 7,000 | 11,000 |
| 63-8mm | 6 | 10 | 12 | 14 | 20 | 28 | 36 | 50 | 80 | 125 | 200 | 320 | 500 | 800 | 1,250 | 2,000 | 3,200 | 5,000 | 8,000 | 12,500 |
| 8-1mm | 8 | 12 | 15 | 18 | 25 | 35 | 45 | 60 | 90 | 140 | 230 | 360 | 560 | 900 | 1,400 | 2,300 | 3,600 | 5,600 | 9,000 | 14,000 |
| 1-125mm | 10 | 16 | 18 | 22 | 30 | 40 | 55 | 70 | 105 | 165 | 260 | 420 | 660 | 1,050 | 1,650 | 2,600 | 4,200 | 6,600 | 10,500 | 16,500 |
| 125-16mm | 12 | 20 | 22 | 28 | 35 | 50 | 65 | 80 | 125 | 195 | 310 | 500 | 780 | 1,250 | 1,950 | 3,100 | 5,000 | 7,800 | 12,500 | 19,500 |
| 16-2mm | 16 | 25 | 28 | 35 | 45 | 60 | 80 | 100 | 150 | 230 | 370 | 600 | 920 | 1,500 | 2,300 | 3,700 | 6,000 | 9,200 | 15,000 | 23,000 |
| 2-25mm | 20 | 30 | 35 | 45 | 55 | 75 | 95 | 115 | 175 | 280 | 440 | 700 | 1,100 | 1,750 | 2,800 | 4,400 | 7,000 | 11,000 | 17,500 | 28,000 |
注:IT6-IT7 用于精密配合(模具导柱导套常选),IT8-IT11 用于一般配合,IT12 以上用于非配合尺寸。数值依据 GB/T 1800.1。