TIÊU CHUẨN NHÀ NƯỚC
TCVN 2029 – 77
LÒ XO XOẮN TRỤ NÉN LOẠI III, CẤP 2 BẰNG THÉP MẶT CẮT TRÒN - THÔNG SỐ CƠ BẢN
Cylindrical helical compression springs of III class and of 2 category made of round steel - Main parameters of coils
1. Tiêu chuẩn này áp dụng cho lò xo nén loại III cấp 2 có lực khi biến dạng lớn nhất (P3) từ 315 đến 14000N.
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 | 315 | 3,0 | 40 | 16,00 | 19,690 |
| 2 | 335 | 38 | 18,88 | 17,740 | |
| 3 | 355 | 36 | 22,54 | 15,750 | |
| 4 | 375 | 34 | 27,22 | 13,780 | |
| 5 | 400 | 3,0 | 32 | 33,18 | 12,060 |
| 6 | 425 | 30 | 41,15 | 10,330 | |
| 7 | 450 | 28 | 51,84 | 8,681 | |
| 8 | 3,5 | 45 | 20,98 | 21,450 | |
| 9 10 | 475 | 3,0 3,5 | 26 42 | 66,57 26,30 | 7,135 18,060 |
| 11 12 | 500 | 3,0 3,5 | 25 40 | 76,07 30,85 | 6,573 16,210 |
| 13 14 | 530 | 3,0 3,5 | 24 38 | 87,46 36,51 | 6,060 14,520 |
| 15 16 17 | 560 | 3,0 3,5 4,0 | 22 36 52 | 118,30 43,71 23,15 | 4,734 12,810 24,190 |
| 18 19 20 | 600 | 3,0 3,5 4,0 | 21 34 50 | 138,90 52,89 26,30 | 4,320 11,340 22,810 |
| 21 22 23 | 630 | 3,0 3,5 4,0 | 20 32 48 | 164,60 64,82 30,05 | 3,827 9,718 20,960 |
| 24 25 26 | 670 | 3,0 3,5 4,0 | 19 30 45 | 198,10 80,63 37,14 | 3,382 8,309 18,040 |
| 27 28 29 30 | 710 | 3,0 3,5 4,0 4,5 | 18 28 42 60 | 240,00 102,00 46,65 24,01 | 2,958 6,961 15,220 29,570 |
| 31 32 33 34 | 750 | 3,0 3,5 4,0 4,5 | 17 26 40 55 | 294,60 131,70 54,87 31,84 | 2,546 5,695 13,670 23,560 |
| 35 36 37 38 | 800 | 3,0 3,5 4,0 4,5 | 16 25 38 52 | 368,70 151,20 65,14 38,26 | 2,170 5,291 12,280 20,910 |
| 39 40 41 42 | 850 | 3,0 3,5 4,0 4,5 | 15 24 36 50 | 468,80 173,90 78,12 43,54 | 1,813 4,888 10,880 19,520 |
| 43 44 45 46 | 900 | 3,5 4,0 4,5 5,0 | 22 34 48 65 | 237,00 94,81 49,77 28,94 | 3,797 9,493 18,080 31,100 |
| 47 48 49 50 | 950 | 3,5 4,0 4,5 5,0 | 21 32 45 63 | 280,00 116,60 61,73 32,03 | 3,393 8,148 15,390 29,660 |
| 51 52 53 54 | 1000 | 3,5 4,0 4,5 5,0 | 20 30 42 60 | 334,10 145,70 77,76 37,56 | 2,994 6,863 12,860 26,620 |
| 55 56 57 58 59 | 1060 | 3,5 4,0 4,5 5,0 5,5 | 19 28 40 55 75 | 402,60 185,20 91,65 50,00 27,26 | 2,633 5,724 11,570 21,200 38,890 |
| 60 61 62 63 64 | 1120 | 3,5 4,0 4,5 5,0 5,5 | 18 26 38 52 70 | 492,20 240,40 109,30 60,20 34,10 | 2,275 4,659 10,250 18,600 32,840 |
| 65 66 67 68 69 | 1180 | 3,5 4,0 4,5 5,0 5,5 | 17 25 36 50 65 | 609,90 276,40 131,20 68,59 43,44 | 1,935 4,269 8,994 17,200 27,160 |
| 70 71 72 73 74 | 1250 | 4,0 4,5 5,0 5,5 6,0 | 24 34 48 63 80 | 320,00 159,70 78,60 48,14 32,01 | 3,906 7,827 15,900 25,960 39,050 |
| 75 76 77 78 79 | 1320 | 4,0 4,5 5,0 5,5 6,0 | 22 32 45 60 75 | 439,00 197,30 97,66 56,53 39,45 | 3,007 6,690 13,520 23,350 33,460 |
| 80 81 82 83 84 | 1400 | 4,0 4,5 5,0 5,5 6,0 | 21 30 42 55 70 | 521,00 246,90 123,40 75,45 49,39 | 2,687 5,670 11,340 18,560 28,340 |
| 85 86 87 88 89 | 1500 | 4,0 4,5 5,0 5,5 6,0 | 20 28 40 52 65 | 625,00 316,40 145,80 91,03 63,10 | 2,400 4,741 10,290 16,480 23,770 |
| 90 91 92 93 | 1600 | 4,5 5,0 5,5 6,0 | 26 38 50 63 | 412,60 173,90 103,80 70,00 | 3,878 9,201 15,410 22,860 |
| 94 95 96 97 | 1700 | 4,5 5,0 5,5 6,0 | 25 36 48 60 | 476,00 209,80 119,20 82,30 | 3,572 8,103 14,260 20,660 |
| 98 99 100 101 102 | 1800 | 4,5 5,0 5,5 6,0 7,0 | 24 34 45 55 90 | 553,00 256,30 148,50 110,00 41,96 | 3,255 7,023 12,120 16,360 42,900 |
| 103 104 105 106 107 | 1900 | 4,5 5,0 5,5 6,0 7,0 | 22 32 42 52 85 | 764,50 317,50 188,20 133,00 50,63 | 2,485 5,984 10,100 14,280 37,530 |
| 108 109 110 111 | 2000 | 5,0 5,5 6,0 7,0 | 30 40 50 80 | 400,00 222,80 152,40 61,70 | 5,000 8,977 13,120 32,410 |
| 112 113 114 115 | 2120 | 5,0 5,5 6,0 7,0 | 28 38 48 75 | 513,70 266,60 174,90 76,36 | 4,127 7,952 12,120 27,760 |
| 116 117 118 119 120 | 2240 | 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 | 3,320 6,944 10,250 23,330 49,840 |
| 121 122 123 124 125 | 2360 | 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 | 3,021 5,972 8,495 19,140 44,870 |
| 126 127 128 129 | 2500 | 5,5 6,0 7,0 8,0 | 32 40 63 95 | 491,80 329,70 136,70 62,20 | 5,083 7,582 18,290 40,190 |
| 130 131 132 133 | 2650 | 5,5 6,0 7,0 8,0 | 30 38 60 90 | 622,40 396,20 161,40 74,29 | 4,258 6,688 16,420 35,670 |
| 134 135 136 137 | 2800 | 5,5 6,0 7,0 8,0 | 28 36 55 85 | 803,30 480,00 216,80 89,72 | 3,486 5,833 12,920 31,210 |
| 138 139 140 141 | 3000 | 6,0 7,0 8,0 9,0 | 34 52 80 120 | 590,40 263,40 109,70 47,98 | 5,081 11,390 27,350 62,530 |
| 142 143 144 145 | 3150 | 6,0 7,0 8,0 9,0 | 32 50 75 110 | 737,30 302,40 135,90 63,72 | 4,272 10,420 23,180 49,440 |
| 146 147 148 149 | 3350 | 6,0 7,0 8,0 9,0 | 30 48 70 105 | 937,50 347,90 171,80 74,16 | 3,573 9,629 19,500 45,180 |
| 150 151 152 153 | 3550 | 7,0 8,0 9,0 10,0 | 45 65 100 130 | 437,60 221,20 87,09 57,87 | 8,113 16,050 40,760 61,340 |
| 154 155 156 157 | 3750 | 7,0 8,0 9,0 10,0 | 42 63 95 125 | 560,00 246,20 103,00 65,75 | 6,696 15,230 36,410 57,030 |
| 158 159 160 161 | 4000 | 7,0 8,0 9,0 10,0 | 40 60 90 120 | 668,10 291,30 123,50 75,13 | 5,987 13,730 32,400 53,240 |
| 162 163 164 165 | 4250 | 7,0 8,0 9,0 10,0 | 38 55 85 110 | 805,90 394,50 149,70 100,00 | 5,273 10,770 28,390 42,500 |
| 166 167 168 169 | 4500 | 7,0 8,0 9,0 10,0 | 36 52 80 105 | 984,50 480,80 183,20 116,60 | 4,571 9,359 24,560 38,590 |
| 170 171 172 173 | 4750 | 8,0 9,0 10,0 11,0 | 50 75 100 140 | 552,90 228,20 137,20 68,15 | 8,591 20,810 34,620 69,700 |
| 174 175 176 177 | 5000 | 8,0 9,0 10,0 11,0 | 48 70 95 130 | 640,00 288,70 162,80 86,88 | 7,812 17,320 30,710 57,550 |
| 178 179 180 181 182 | 5300 | 8,0 9,0 10,0 11,0 12,0 | 45 65 90 125 160 | 808,60 374,10 195,30 98,83 64,02 | 6,554 14,170 27,140 53,630 82,790 |
| 183 184 185 186 187 | 5600 | 8,0 9,0 10,0 11,0 12,0 | 42 63 85 120 150 | 1042,00 416,70 237,00 113,00 78,90 | 5,374 13,440 23,630 49,560 70,980 |
| 188 189 190 191 192 | 6000 | 8,0 9,0 10,0 11,0 12,0 | 40 60 80 110 140 | 1250,00 494,60 291,50 150,90 98,88 | 4,800 12,130 20,580 39,760 60,680 |
| 193 194 195 196 | 6300 | 9,0 10,0 11,0 12,0 | 55 75 105 130 | 674,10 364,20 176,30 126,30 | 9,346 17,300 35,740 49,880 |
| 197 198 199 200 | 6700 | 9,0 10,0 11,0 12,0 | 52 70 100 125 | 825,20 463,00 207,70 143,70 | 8,119 14,470 32,260 46,620 |
| 201 202 203 204 | 7100 | 9,0 10,0 11,0 12,0 | 50 65 95 120 | 951,90 601,10 246,70 164,60 | 7,459 11,810 28,780 43,130 |
| 205 206 207 208 | 7500 | 9,0 10,0 11,0 12,0 | 48 63 90 110 | 1109,00 671,70 297,20 220,10 | 6,763 11,160 25,240 34,080 |
| 209 210 211 212 | 8000 | 9,0 10,0 11,0 12,0 | 45 60 85 105 | 1406,00 800,00 360,90 257,80 | 5,690 10,000 22,170 31,030 |
| 213 214 215 | 8500 | 10,0 11,0 12,0 | 55 80 100 | 1097,00 446,20 304,30 | 7,748 19,050 27,030 |
| 216 217 218 | 9000 | 10,0 11,0 12,0 | 52 75 95 | 1350,00 558,50 362,70 | 6,667 16,110 24,820 |
| 219 220 221 | 9500 | 10,0 11,0 12,0 | 50 70 90 | 1562,00 712,90 437,00 | 6,082 13,330 21,740 |
| 222 223 | 10000 | 11,0 12,0 | 65 85 | 929,80 533,00 | 10,760 18,760 |
| 224 225 | 10600 | 11,0 12,0 | 63 80 | 1040,00 659,50 | 10,190 16,070 |
| 226 227 | 11200 | 11,0 12,0 | 60 75 | 1248,00 829,30 | 8,974 13,500 |
| 228 | 11800 | 11,0 | 55 | 1719,00 | 6,864 |
| 229 | 12,0 | 70 | 1063,00 | 11,100 | |
| 230 | 12500 | 65 | 1390,00 | 8,993 | |
| 231 | 13200 | 63 | 1563,00 | 8,445 | |
| 232 | 14000 | 60 | 1875,00 | 7,467 |
* Tạm thời theo ГOCT 14963-69 của Liên xô hay các tiêu chuẩn tương ứng của các nước khác cho đến khi có tiêu chuẩn Việt Nam tương ứng.