TIÊU CHUẨN NHÀ NƯỚC
TCVN 2026 – 77
LÒ XO XOẮN TRỤ NÉN VÀ KÉO LOẠI II, CẤP 3 BẰNG THÉP MẶT CẮT TRÒN - THÔNG SỐ CƠ BẢN
Cylindrical helical compression (tension) springs of II class and 3 category made of round steel -Main parameters of coils.
1. Tiêu chuẩn này áp dụng cho lò xo nén và kéo loại II, cấp 3 có lực khi biến dạng lớn nhất (P3) từ 236 đến 10000N.
2. Thông số cơ bản của lò xo phải phù hợp với chỉ dẫn trong bảng.
3. Vật liệu: dây thép* có đường kính từ 3 đến 12 mm.
4. Phân loại lò xo – theo TCVN 2018 – 77.
5. Phương pháp xác định các kích thước của lò xo – theo TCVN 2019 – 77.
| Số hiệu của lò xo | Lực lò xo khi biến dạng lớn nhất P3, N | Đường kính dây d, mm | Đường kính ngoài của lò xo D, mm | Độ cứng của một vòng Z1, N/mm | Biến dạng lớn nhất của một vòng f3, mm |
| 1 | 2 | 3 | 4 | 5 | 6 |
| 1 | 236 | 3,0 | 40 | 16,00 | 14,750 |
| 2 | 260 | 38 | 18,88 | 13,240 | |
| 3 | 265 | 36 | 22,54 | 11,760 | |
| 4 | 280 | 34 | 27,22 | 10,290 | |
| 5 | 300 | 32 | 33,18 | 9,042 | |
| 6 | 315 | 30 | 41,15 | 7,655 | |
| 7 | 335 |
| 28 45 | 51,84 20,98 | 6,462 15,970 |
| 8 | 3,5 | ||||
| 9 10 | 355 | 3,0 3,5 | 26 42 | 66,57 26,30 | 5,333 13,500 |
| 11 12 | 375 | 3,0 3,5 | 25 40 | 76,08 30,85 | 4,930 12,160 |
| 13 14 | 400 | 3,0 3,5 | 24 38 | 87,46 36,51 | 4,574 10,960 |
| 15 16 17 | 425 | 3,0 3,5 4,0 | 22 36 52 | 118,30 43,71 23,15 | 3,592 9,723 18,360 |
| 18 19 20 | 450 | 3,0 3,5 4,0 | 21 34 50 | 138,90 52,89 26,30 | 3,240 8,509 17,110 |
| 21 22 23 | 475 | 3,0 3,5 4,0 | 20 32 48 | 164,60 64,82 30,05 | 2,886 7,327 15,810 |
| 24 25 26 | 500 | 3,0 3,5 4,0 | 19 30 45 | 198,10 80,64 37,14 | 2,524 6,201 13,460 |
| 27 28 29 | 530 | 3,0 3,5 4,0 | 18 28 42 | 240,00 102,00 46,65 | 2,208 5,196 11,360 |
| 30 31 32 33 | 560 | 3,0 3,5 4,0 4,5 | 17 26 40 60 | 294,60 131,70 54,87 24,01 | 1,901 4,252 10,200 23,320 |
| 34 35 | 600 | 3,0 3,5 | 16 25 | 368,70 151,20 | 1,627 3,968 |
| 36 37 | 600 | 4,0 4,5 | 38 55 | 65,14 31,84 | 9,211 18,840 |
| 38 39 40 41 | 630 | 3,0 3,5 4,0 4,5 | 15 24 36 52 | 468,80 173,90 78,12 38,26 | 1,344 3,623 8,064 16,470 |
| 42 43 44 45 | 670 | 3,5 4,0 4,5 5,0 | 22 34 50 65 | 237,00 94,81 43,54 28,94 | 2,827 7,067 15,390 23,150 |
| 46 47 48 49 | 710 | 3,5 4,0 4,5 5,0 | 21 32 48 63 | 280,00 116,60 49,77 32,03 | 2,536 6,089 14,260 22,170 |
| 50 51 52 53 | 750 | 3,5 4,0 4,5 5,0 | 20 30 45 60 | 334,10 145,70 61,73 37,56 | 2,245 5,148 12,150 19,970 |
| 54 55 56 57 58 | 800 | 3,5 4,0 4,5 5,0 5,5 | 19 28 42 55 75 | 402,60 185,20 77,76 50,00 27,26 | 1,986 4,320 10,290 16,000 29,350 |
| 59 60 61 62 63 | 850 | 3,5 4,0 4,5 5,0 5,5 | 18 26 40 52 70 | 492,20 240,40 91,65 60,20 34,10 | 1,727 3,536 9,274 14,120 24,930 |
| 64 65 66 67 68 | 900 | 3,5 4,0 4,5 5,0 5,5 | 17 25 38 50 65 | 609,90 276,40 109,30 68,59 43,44 | 1,476 3,256 8,234 13,120 20,720 |
| 69 70 71 72 73 | 950 | 4,0 4,5 5,0 5,5 6,0 | 24 36 48 63 80 | 320,00 131,20 78,60 48,14 32,01 | 2,969 7,241 12,070 19,730 29,680 |
| 74 75 76 77 78 | 1000 | 4,0 4,5 5,0 5,5 6,0 | 22 34 45 60 75 | 439,00 159,70 97,66 56,53 39,45 | 2,278 6,262 10,240 17,690 25,350 |
| 79 80 81 82 83 | 1060 | 4,0 4,5 5,0 5,5 6,0 | 21 32 42 55 70 | 521,00 197,30 123,40 75,44 49,39 | 2,034 5,372 8,590 14,050 21,460 |
| 84 85 86 87 88 | 1120 | 4,0 4,5 5,0 5,5 6,0 | 20 30 40 52 65 | 625,00 246,90 145,80 91,03 63,10 | 1,792 4,536 7,682 12,300 17,750 |
| 89 90 91 92 | 1180 | 4,5 5,0 5,5 6,0 | 28 38 50 63 | 316,40 173,90 103,80 70,00 | 3,729 6,786 11,370 16,860 |
| 93 94 95 96 | 1250 | 4,5 5,0 5,5 6,0 | 26 36 48 60 | 412,60 209,80 119,20 82,30 | 3,030 5,958 10,460 15,190 |
| 97 98 99 100 101 | 1320 | 4,5 5,0 5,5 6,0 7,0 | 25 34 45 55 90 | 476,00 256,30 148,50 110,00 41,96 | 2,773 5,150 8,889 12,000 31,460 |
| 102 103 104 105 106 | 1400 | 4,5 5,0 5,5 6,0 7,0 | 24 32 42 52 85 | 553,00 317,50 188,20 133,00 50,63 | 2,532 4,409 7,439 10,530 27,650 |
| 107 108 109 110 111 | 1500 | 4,5 5,0 5,5 6,0 7,0 | 22 30 40 50 80 | 764,50 400,00 222,80 152,40 61,70 | 1,962 3,750 6,732 9,842 24,310 |
| 112 113 114 115 | 1600 | 5,0 5,5 6,0 7,0 | 28 38 48 75 | 513,70 266,60 174,90 76,36 | 3,115 6,002 9,148 20,950 |
| 116 117 118 119 120 | 1700 | 5,0 5,5 6,0 7,0 8,0 | 26 36 45 70 105 | 674,80 322,60 218,50 96,02 44,94 | 2,519 5,270 7,780 17,700 37,830 |
| 121 122 123 124 125 | 1800 | 5,0 5,5 6,0 7,0 8,0 | 25 34 42 65 100 | 781,20 395,20 277,80 123,30 52,60 | 2,304 4,555 6,479 14,600 34,220 |
| 126 127 128 129 | 1900 | 5,5 6,0 7,0 8,0 | 32 40 63 95 | 491,80 329,70 136,70 62,20 | 3,863 5,762 13,900 30,550 |
| 130 131 132 133 | 2000 | 5,5 6,0 7,0 8,0 | 30 38 60 90 | 622,40 396,20 161,40 74,29 | 3,213 5,048 12,390 26,920 |
| 134 135 136 137 138 | 2120 | 5,5 6,0 7,0 8,0 9,0 | 28 36 55 85 120 | 803,30 480,00 216,80 89,72 47,98 | 2,639 4,417 9,778 23,630 44,180 |
| 139 140 141 142 | 2240 | 6,0 7,0 8,0 9,0 | 34 52 80 110 | 590,40 263,40 109,70 63,72 | 3,794 8,504 20,420 35,150 |
| 143 144 145 146 | 2360 | 6,0 7,0 8,0 9,0 | 32 50 75 105 | 737,40 302,40 135,90 74,16 | 3,200 7,804 17,360 31,830 |
| 147 148 149 150 | 2500 | 6,0 7,0 8,0 9,0 | 30 48 70 100 | 937,50 347,90 171,80 87,09 | 2,667 7,186 14,550 28,700 |
| 151 152 153 154 | 2650 | 7,0 8,0 9,0 10,0 | 45 65 95 130 | 437,60 221,20 103,00 57,87 | 6,056 11,980 25,730 45,790 |
| 155 156 157 158 | 2800 | 7,0 8,0 9,0 10,0 | 42 63 90 125 | 560,00 245,60 123,50 65,75 | 5,000 11,400 22,680 42,580 |
| 159 160 161 162 | 3000 | 7,0 8,0 9,0 10,0 | 40 60 85 120 | 668,10 291,30 149,70 75,13 | 4,490 10,300 20,040 32,930 |
| 163 164 165 166 | 3150 | 7,0 8,0 9,0 10,0 | 38 55 80 110 | 805,90 394,50 183,20 100,00 | 3,909 7,984 17,190 31,500 |
| 167 168 169 170 171 | 3350 | 7,0 8,0 9,0 10,0 11,0 | 36 52 75 105 140 | 984,50 480,80 228,20 116,60 68,15 | 3,403 6,968 14,680 28,730 49,160 |
| 172 173 174 175 | 3550 | 8,0 9,0 10,0 11,0 | 50 70 100 130 | 552,90 288,70 137,20 86,88 | 6,421 12,300 25,870 40,860 |
| 176 177 178 179 180 | 3750 | 8,0 9,0 10,0 11,0 12,0 | 48 65 95 125 160 | 640,00 374,10 162,80 98,83 64,02 | 5,859 10,020 23,030 37,950 58,580 |
| 181 182 183 184 185 | 4000 | 8,0 9,0 10,0 11,0 12,0 | 45 63 90 120 150 | 808,60 416,70 195,30 113,00 78,90 | 4,947 9,599 20,480 35,400 50,700 |
| 186 187 188 189 190 | 4250 | 8,0 9,0 10,0 11,0 12,0 | 42 60 85 110 140 | 1042,00 494,60 237,00 150,90 98,88 | 4,079 8,593 17,930 28,160 42,990 |
| 191 192 193 194 195 | 500 | 8,0 9,0 10,0 11,0 12,0 | 40 55 80 105 130 | 1250,00 674,50 291,50 176,30 126,30 | 3,600 6,672 15,440 25,530 35,630 |
| 196 197 198 199 | 4750 | 9,0 10,0 11,0 12,0 | 52 75 100 125 | 825,20 364,20 207,70 143,70 | 5,756 13,040 22,870 33,050 |
| 200 201 202 203 | 5000 | 9,0 10,0 11,0 12,0 | 50 70 95 120 | 951,90 463,00 246,70 164,60 | 5,253 10,800 20,270 30,380 |
| 204 205 206 207 | 5300 | 9,0 10,0 11,0 12,0 | 48 65 90 110 | 1109,00 601,10 297,20 220,10 | 4,779 8,817 17,810 24,080 |
| 208 209 210 211 | 5600 | 9,0 10,0 11,0 12,0 | 45 63 85 105 | 1406,00 671,70 360,90 257,80 | 3,983 8,337 15,520 21,720 |
| 212 213 214 | 6000 | 10,0 11,0 12,0 | 60 80 100 | 800,00 446,20 304,30 | 7,500 13,450 19,720 |
| 215 216 217 | 6300 | 10,0 11,0 12,0 | 55 75 95 | 1097,00 558,50 362,70 | 5,743 11,280 17,370 |
| 218 219 220 | 6700 | 10,0 11,0 12,0 | 52 70 90 | 1350,00 712,90 437,00 | 4,963 9,399 15,330 |
| 221 222 223 | 7100 | 10,0 11,0 12,0 | 50 65 85 | 1562,00 929,80 533,00 | 4,547 7,636 13,320 |
| 224 225 | 7500 | 11,0 12,0 | 63 80 | 1040,00 659,50 | 7,212 11,370 |
| 226 227 | 8000 | 11,0 12,0 | 60 75 | 1248,00 829,30 | 6,410 9,647 |
| 228 | 8500 | 11,0 | 55 | 1719,00 | 4,945 |
| 229 | 12,0 | 70 | 1063,00 | 7,998 | |
| 230 | 9000 | 65 | 1390,00 | 6,475 | |
| 231 | 9500 | 63 | 1563,00 | 6,078 | |
| 232 | 10000 | 60 | 1875,00 | 5,333 |
* Tạm thời theo ГOCT 14963 - 69 và ГOCT 2771 - 57 của Liên Xô hay các tiêu chuẩn tương ứng của các nước khác cho đến khi có tiêu chuẩn Việt Nam tương ứng.