 
 
		 
 
			 
 
			 
 
			 
 
			
	use: 
The 4-68 centrifugal fan can be used for indoor ventilation in general factories and large buildings. It can be used to input gas or output gas. The gas to be transported should be air not exceeding 80°C and other gases that are not spontaneously combustible, harmless to the human body, and non-corrosive to steel materials. The gas is not allowed to contain viscous substances, and the dust and hard particles contained are not more than 150mg/m3. 
performance:
4-68№6.3C Performance and Selection Table 
	
| Spindle speed r/min | Serial number | Full pressure Pa | flow m3 | Electric motor | |
| model | power KW | ||||
| 2240 | 1 | 3159 | 12852 | Y180M-2 | 22 | 
| 2 | 3108 | 14511 | |||
| 3 | 3030 | 16169 | |||
| 4 | 2893 | 17828 | |||
| 5 | 2706 | 19486 | |||
| 6 | 2490 | 21144 | |||
| 7 | 2196 | 22803 | |||
| 2000 | 1 | 2510 | 11476 | Y160M2-2 | 15 | 
| 2 | 2481 | 12956 | |||
| 3 | 2413 | 14437 | |||
| 4 | 2304 | 15917 | |||
| 5 | 2157 | 17398 | |||
| 6 | 1971 | 18879 | |||
| 7 | 1755 | 20359 | |||
| 1800 | 1 | 2040 | 10328 | Y160M1-2 | 11 | 
| 2 | 2010 | 11660 | |||
| 3 | 1951 | 12993 | |||
| 4 | 1863 | 14325 | |||
| 5 | 1745 | 15658 | |||
| 6 | 1588 | 16991 | |||
| 7 | 1422 | 18324 | |||
| 1600 | 1 | 1608 | 9180 | Y132S2-2 | 7.5 | 
| 2 | 1588 | 10365 | |||
| 3 | 1549 | 11550 | |||
| 4 | 1471 | 12734 | |||
| 5 | 1382 | 13918 | |||
| 6 | 1255 | 15103 | |||
| 7 | 1177 | 16287 | |||
| 1400 | 1 | 1235 | 8032 | Y132S-4 | 5.5 | 
| 2 | 1216 | 9069 | |||
| 3 | 1186 | 10105 | |||
| 4 | 1127 | 11142 | |||
| 5 | 1059 | 12178 | |||
| 6 | 961 | 13215 | |||
| 7 | 863 | 14251 | |||
| 1250 | 1 | 980 | 7172 | Y112M-4 | 4 | 
| 2 | 970 | 8098 | |||
| 3 | 941 | 9024 | |||
| 4 | 902 | 9949 | |||
| 5 | 843 | 10874 | |||
| 6 | 764 | 11799 | |||
| 7 | 686 | 12724 | |||
| 1120 | 1 | 784 | 6426 | Y100L2-4 | 3 | 
| 2 | 774 | 7255 | |||
| 3 | 755 | 8085 | |||
| 4 | 725 | 8913 | |||
| 5 | 676 | 9743 | |||
| 6 | 671 | 10572 | |||
| 7 | 549 | 11401 | |||
| 1000 | 1 | 627 | 5737 | Y100L1-4 | 2.2 | 
| 2 | 617 | 6478 | |||
| 3 | 607 | 7218 | |||
| 4 | 578 | 7958 | |||
| 5 | 539 | 8699 | |||
| 6 | 490 | 9439 | |||
| 7 | 441 | 10179 | |||
| 900 | 1 | 509 | 5164 | Y90L-4 | 1.5 | 
| 2 | 50 | 5830 | |||
| 3 | 490 | 6497 | |||
| 4 | 470 | 7163 | |||
| 5 | 441 | 7829 | |||
| 6 | 402 | 8496 | |||
| 7 | 353 | 9162 | |||
| 800 | 1 | 402 | 4590 | Y90S-4 | 1.1 | 
| 2 | 392 | 5182 | |||
| 3 | 382 | 5775 | |||
| 4 | 372 | 6367 | |||
| 5 | 343 | 6959 | |||
| 6 | 313 | 7552 | |||
| 7 | 284 | 8144 | |||
| 4-68№8C Performance and Selection Table | |||||
| 1800 | 1 | 3314 | 21830 | Y200L2-4 | 37 | 
| 2 | 3265 | 24559 | |||
| 3 | 3177 | 27288 | |||
| 4 | 3030 | 30016 | |||
| 5 | 2334 | 32745 | |||
| 6 | 2589 | 35474 | |||
| 7 | 2314 | 38202 | |||
| 1600 | 1 | 2681 | 19404 | Y200L1-4 | 30 | 
| 2 | 2579 | 21830 | |||
| 3 | 2510 | 24256 | |||
| 4 | 2392 | 2661 | |||
| 5 | 2235 | 29108 | |||
| 6 | 2049 | 31532 | |||
| 7 | 1833 | 33958 | |||
| 1400 | 1 | 2009 | 16979 | Y180M-4 | 18.5 | 
| 2 | 1970 | 19101 | |||
| 3 | 1921 | 21224 | |||
| 4 | 1833 | 23346 | |||
| 5 | 1715 | 25468 | |||
| 6 | 1568 | 27591 | |||
| 7 | 1401 | 29713 | |||
| 1250 | 1 | 1597 | 15159 | Y160L-4 | 15 | 
| 2 | 1568 | 17054 | |||
| 3 | 1529 | 18949 | |||
| 4 | 1460 | 20844 | |||
| 5 | 1362 | 22739 | |||
| 6 | 1245 | 24634 | |||
| 7 | 1117 | 26528 | |||
| 1120 | 1 | 1284 | 13583 | Y160M-4 | 11 | 
| 2 | 1264 | 15281 | |||
| 3 | 1225 | 16979 | |||
| 4 | 1176 | 18677 | |||
| 5 | 1098 | 20375 | |||
| 6 | 1000 | 22073 | |||
| 7 | 892 | 23770 | |||
| 1000 | 1 | 1019 | 12128 | Y132M-4 | 7.5 | 
| 2 | 1009 | 13644 | |||
| 3 | 980 | 15160 | |||
| 4 | 931 | 16676 | |||
| 5 | 872 | 18192 | |||
| 6 | 794 | 19708 | |||
| 7 | 715 | 21224 | |||
| 900 | 1 | 833 | 10915 | Y132S-4 | 5.5 | 
| 2 | 813 | 12279 | |||
| 3 | 794 | 13644 | |||
| 4 | 755 | 15008 | |||
| 5 | 706 | 16373 | |||
| 6 | 647 | 17738 | |||
| 7 | 578 | 19101 | |||
| 800 | 1 | 657 | 9702 | Y112M-4 | 4 | 
| 2 | 637 | 10915 | |||
| 3 | 627 | 12128 | |||
| 4 | 598 | 13340 | |||
| 5 | 558 | 14554 | |||
| 6 | 509 | 15767 | |||
| 7 | 460 | 16979 | |||
| 710 | 1 | 519 | 8611 | Y100L2-4 | 3 | 
| 2 | 509 | 9687 | |||
| 3 | 490 | 10763 | |||
| 4 | 470 | 11840 | |||
| 5 | 441 | 12916 | |||
| 6 | 402 | 13992 | |||
| 7 | 362 | 15069 | |||
| 630 | 1 | 402 | 7641 | Y100L1-4 | 2 | 
| 2 | 402 | 8596 | |||
| 3 | 392 | 9551 | |||
| 4 | 372 | 10506 | |||
| 5 | 343 | 11461 | |||
| 6 | 313 | 12416 | |||
| 7 | 284 | 13371 | |||
| 4-68№10C Performance and Selection Table | |||||
| Spindle speedr/min | Serial number | Full pressure Pa | flow m3 | Electric motor | |
| model | power KW | ||||
| 1250 | 1 | 2558 | 30534 | Y225S-4 | 37 | 
| 2 | 2499 | 34235 | |||
| 3 | 2421 | 37936 | |||
| 4 | 2313 | 41637 | |||
| 5 | 2166 | 45338 | |||
| 6 | 1989 | 49040 | |||
| 7 | 1793 | 52740 | |||
| 1120 | 1 | 2048 | 27358 | Y200L-4 | 30 | 
| 2 | 2009 | 30674 | |||
| 3 | 1940 | 33990 | |||
| 4 | 1852 | 37307 | |||
| 5 | 1735 | 40623 | |||
| 6 | 1597 | 43939 | |||
| 7 | 1441 | 47256 | |||
| 1000 | 1 | 1637 | 24427 | Y180L-4 | 22 | 
| 2 | 1597 | 27388 | |||
| 3 | 1548 | 30349 | |||
| 4 | 1480 | 33310 | |||
| 5 | 1382 | 36270 | |||
| 6 | 1274 | 39233 | |||
| 7 | 1147 | 42192 | |||
| 900 | 1 | 1323 | 21984 | Y160L-4 | 15 | 
| 2 | 1294 | 24649 | |||
| 3 | 1254 | 27314 | |||
| 4 | 1196 | 29978 | |||
| 5 | 1127 | 32644 | |||
| 6 | 1029 | 35308 | |||
| 7 | 931 | 37974 | |||
| 800 | 1 | 1049 | 19541 | Y160M-4 | 11 | 
| 2 | 1019 | 21910 | |||
| 3 | 990 | 24279 | |||
| 4 | 941 | 26648 | |||
| 5 | 882 | 29017 | |||
| 6 | 813 | 31385 | |||
| 7 | 735 | 33754 | |||
| 710 | 1 | 823 | 17343 | Y132M-4 | 7.5 | 
| 2 | 804 | 19446 | |||
| 3 | 784 | 21548 | |||
| 4 | 745 | 23650 | |||
| 5 | 696 | 25752 | |||
| 6 | 647 | 27845 | |||
| 7 | 578 | 29956 | |||
| 630 | 1 | 647 | 15389 | Y132S-4 | 5.5 | 
| 2 | 637 | 17254 | |||
| 3 | 617 | 19119 | |||
| 4 | 588 | 20985 | |||
| 5 | 549 | 22850 | |||
| 6 | 509 | 24716 | |||
| 7 | 460 | 26581 | |||
| 560 | 1 | 509 | 13679 | Y112M-4 | 4 | 
| 2 | 500 | 15337 | |||
| 3 | 490 | 16995 | |||
| 4 | 460 | 18654 | |||
| 5 | 431 | 20311 | |||
| 6 | 402 | 21969 | |||
| 7 | 362 | 23627 | |||
| 500 | 1 | 411 | 12214 | Y100M-4 | 3 | 
| 2 | 402 | 13694 | |||
| 3 | 392 | 15175 | |||
| 4 | 372 | 16655 | |||
| 5 | 343 | 18135 | |||
| 6 | 313 | 19616 | |||
| 7 | 284 | 21096 | |||
| 1120 | 1 | 3206 | 53434 | Y280S-4 | 75 | 
| 2 | 3138 | 59912 | |||
| 3 | 3040 | 66388 | |||
| 4 | 2902 | 72865 | Y280M-4 | 90 | |
| 5 | 2716 | 79342 | |||
| 6 | 2500 | 85819 | |||
| 7 | 2255 | 92296 | |||
| 1000 | 1 | 2559 | 47710 | Y250M-4 | 55 | 
| 2 | 2500 | 53492 | |||
| 3 | 2422 | 59276 | |||
| 4 | 2314 | 65058 | |||
| 5 | 2167 | 75841 | Y280S-4 | 75 | |
| 6 | 1990 | 76624 | |||
| 7 | 1794 | 82407 | |||
| 900 | 1 | 2069 | 42938 | Y280S-6 | 45 | 
| 2 | 2030 | 48114 | |||
| 3 | 1961 | 53348 | |||
| 4 | 1873 | 58552 | |||
| 5 | 1755 | 63758 | |||
| 6 | 1618 | 68962 | |||
| 7 | 1451 | 74166 | |||
| 800 | 1 | 1673 | 38168 | Y255M-6 | 30 | 
| 2 | 1598 | 42794 | |||
| 3 | 1549 | 47420 | |||
| 4 | 1480 | 52046 | |||
| 5 | 1382 | 56673 | |||
| 6 | 1274 | 61300 | |||
| 7 | 1147 | 65926 | |||
| 710 | 1 | 1284 | 33874 | Y200L2-6 | 22 | 
| 2 | 1265 | 37980 | |||
| 3 | 1225 | 42086 | |||
| 4 | 1167 | 46191 | |||
| 5 | 1088 | 50297 | |||
| 6 | 1000 | 54403 | |||
| 7 | 902 | 58509 | 
| 630 | 1 | 1010 | 30057 | Y180L-6 | 15 | 
| 2 | 990 | 33700 | |||
| 3 | 961 | 37344 | |||
| 4 | 912 | 40987 | |||
| 5 | 863 | 44630 | |||
| 6 | 794 | 48273 | |||
| 7 | 706 | 51917 | |||
| 560 | 1 | 804 | 26717 | Y160L-6 | 11 | 
| 2 | 784 | 29956 | |||
| 3 | 755 | 33194 | |||
| 4 | 725 | 36433 | |||
| 5 | 676 | 39671 | |||
| 6 | 627 | 42910 | |||
| 7 | 558 | 46148 | |||
| 500 | 1 | 637 | 23855 | Y160M-6 | 7.5 | 
| 2 | 627 | 26764 | |||
| 3 | 608 | 29638 | |||
| 4 | 578 | 32528 | |||
| 5 | 539 | 35421 | |||
| 6 | 500 | 38312 | |||
| 7 | 451 | 41201 | |||
| 450 | 1 | 519 | 2469 | Y132M2-6 | 5.5 | 
| 2 | 509 | 24071 | |||
| 3 | 490 | 26674 | |||
| 4 | 470 | 29276 | |||
| 5 | 441 | 31879 | |||
| 6 | 402 | 34481 | |||
| 7 | 362 | 37083 | |||
| 400 | 1 | 411 | 19084 | Y132M1-6 | 4 | 
| 2 | 402 | 21397 | |||
| 3 | 392 | 23710 | |||
| 4 | 372 | 26023 | |||
| 5 | 343 | 28337 | |||
| 6 | 313 | 30650 | |||
| 7 | 284 | 32963 | 
| 4-68№16B performance and selection table | |||||
| Spindle speed r/min | Serial number | Full pressure Pa | flow m3 | Electric motor | |
| model | power KW | ||||
| 960 | 1 | 3863 | 96502 | Y355M2-6 | 200 | 
| 2 | 3775 | 107694 | |||
| 3 | 3658 | 119337 | |||
| 4 | 3491 | 130980 | |||
| 5 | 3275 | 142623 | |||
| 6 | 3010 | 154265 | |||
| 7 | 2716 | 165908 | |||
| 800 | 1 | 2687 | 80043 | Y315M1-6 | 90 | 
| 2 | 2628 | 89745 | |||
| 3 | 2540 | 99448 | |||
| 4 | 2422 | 109150 | Y315M2-6 | 110 | |
| 5 | 2275 | 118852 | |||
| 6 | 2088 | 128554 | |||
| 7 | 1882 | 138257 | |||
| 710 | 1 | 2118 | 71038 | Y315S-6 | 75 | 
| 2 | 2069 | 79649 | |||
| 3 | 2000 | 88260 | |||
| 4 | 1912 | 96871 | |||
| 5 | 1794 | 105481 | |||
| 6 | 1647 | 114092 | |||
| 7 | 1480 | 122703 | |||
| 630 | 1 | 1667 | 63304 | Y280M-6 | 55 | 
| 2 | 1627 | 70675 | |||
| 3 | 1578 | 78315 | |||
| 4 | 1500 | 85956 | |||
| 5 | 1412 | 93596 | |||
| 6 | 1294 | 101237 | |||
| 7 | 1167 | 108877 | |||
| 560 | 1 | 1314 | 56030 | Y250M-6 | 37 | 
| 2 | 1284 | 62822 | |||
| 3 | 3658 | 69613 | |||
| 4 | 1245 | 76405 | |||
| 5 | 1186 | 83179 | |||
| 6 | 1117 | 89988 | |||
| 7 | 1019 | 96780 | |||
| 500 | 1 | 921 | 50027 | Y255M-6 | 30 | 
| 2 | 1049 | 56091 | |||
| 3 | 990 | 62155 | |||
| 4 | 91 | 68219 | |||
| 5 | 892 | 74283 | |||
| 6 | 813 | 80346 | |||
| 7 | 735 | 86410 | |||
| 450 | 1 | 853 | 45024 | Y200L1-6 | 18.5 | 
| 2 | 833 | 50482 | |||
| 3 | 804 | 55939 | |||
| 4 | 764 | 61397 | |||
| 5 | 715 | 66854 | |||
| 6 | 675 | 72312 | |||
| 7 | 589 | 77769 | |||
| 400 | 1 | 666 | 40022 | Y180L-6 | 15 | 
| 2 | 657 | 44873 | |||
| 3 | 637 | 49724 | |||
| 4 | 608 | 54575 | |||
| 5 | 568 | 59426 | |||
| 6 | 519 | 64277 | |||
| 7 | 470 | 69128 | |||
| 355 | 1 | 529 | 35519 | Y160L-6 | 11 | 
| 2 | 519 | 39825 | |||
| 3 | 500 | 44130 | |||
| 4 | 480 | 48435 | |||
| 5 | 451 | 52741 | |||
| 6 | 411 | 57046 | |||
| 7 | 372 | 61351 | |||
| 315 | 1 | 411 | 31517 | Y160M-6 | 7.5 | 
| 2 | 402 | 35337 | |||
| 3 | 392 | 39158 | |||
| 4 | 372 | 42978 | |||
| 5 | 353 | 46798 | |||
| 6 | 323 | 50618 | |||
| 7 | 294 | 54439 | |||
| 710 | 1 | 3304 | 138747 | Y355M-8 | 200 | 
| 2 | 3226 | 155565 | |||
| 3 | 3128 | 172383 | |||
| 4 | 2981 | 189200 | |||
| 5 | 2794 | 206018 | |||
| 6 | 2569 | 222836 | |||
| 7 | 2324 | 239654 | |||
| 630 | 1 | 2598 | 121113 | Y355M2-8 | 160 | 
| 2 | 2540 | 138036 | |||
| 3 | 2461 | 152959 | |||
| 4 | 2353 | 167882 | |||
| 5 | 2206 | 182805 | |||
| 6 | 2030 | 197728 | |||
| 7 | 1842 | 212650 | |||
| 560 | 1 | 2059 | 109434 | Y315M3-8 | 110 | 
| 2 | 2010 | 122699 | |||
| 3 | 1951 | 135964 | |||
| 4 | 1853 | 149228 | |||
| 5 | 1745 | 162493 | |||
| 6 | 1598 | 175758 | |||
| 7 | 1441 | 189023 | |||
| 500 | 1 | 1637 | 97709 | Y315M2-8 | 75 | 
| 2 | 1598 | 109553 | |||
| 3 | 1549 | 121396 | |||
| 4 | 1480 | 133240 | |||
| 5 | 1392 | 145083 | |||
| 6 | 1274 | 156927 | |||
| 7 | 1147 | 168770 | |||
| 450 | 1 | 1323 | 87938 | Y315S-8 | 55 | 
| 2 | 1294 | 98597 | |||
| 3 | 1255 | 106257 | |||
| 4 | 1196 | 119916 | |||
| 5 | 1127 | 130575 | |||
| 6 | 1029 | 141234 | |||
| 7 | 931 | 151893 | |||
| 400 | 1 | 1049 | 78167 | Y280M-8 | 45 | 
| 2 | 1029 | 87642 | |||
| 3 | 990 | 97117 | |||
| 4 | 951 | 106592 | |||
| 5 | 892 | 116067 | |||
| 6 | 813 | 125541 | |||
| 7 | 735 | 135016 | 
| 355 | 1 | 823 | 69373 | Y250M-8 | 30 | 
| 2 | 804 | 77782 | |||
| 3 | 784 | 86191 | |||
| 4 | 745 | 94600 | |||
| 5 | 696 | 103900 | |||
| 6 | 647 | 111418 | |||
| 7 | 578 | 119827 | |||
| 315 | 1 | 647 | 61557 | Y255M-8 | 22 | 
| 2 | 637 | 69018 | |||
| 3 | 617 | 76480 | |||
| 4 | 588 | 83941 | |||
| 5 | 549 | 91402 | |||
| 6 | 509 | 98864 | |||
| 7 | 460 | 106325 | |||
| 280 | 1 | 509 | 54717 | Y200L-8 | 15 | 
| 2 | 500 | 61349 | |||
| 3 | 490 | 67982 | |||
| 4 | 460 | 74614 | |||
| 5 | 431 | 81247 | |||
| 6 | 402 | 87879 | |||
| 7 | 362 | 94511 | |||
| 250 | 1 | 411 | 48855 | Y180L-8 | 11 | 
| 2 | 402 | 54776 | |||
| 3 | 392 | 60698 | |||
| 4 | 372 | 66620 | |||
| 5 | 343 | 72542 | |||
| 6 | 323 | 78463 | |||
| 7 | 284 | 84385 |