Four Point Contact Ball Slewing Bearings
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Four-Point Contact Ball Slewing Bearings
Four-point contact ball slewing bearings mainly comprises an inner ring, outer ring, single-row steel ball, cage (or gasket), sealing device, and other parts. The inner and outer rings of the four-point contact ball slewing bearings have integral and split structures. The rigidity of the whole ring is more muscular, and the split type is easy to adjust. Two separate rings are bolted together before the product leaves the factory. Four-point contact slewing bearings generally have cages (or gaskets). Complete – filled ball structure is only used when the load is relatively large. Fully packed four-point contact ball bearings have significant bearing capacity but considerable friction resistance. Friction also tends to cause scratches on the surface of the ball. The basic structure of four-point contact ball slewing bearings: with or without gear, external gear, internal gear, with high static load capacity.
Four Point Contact Ball Slewing Bearings Specification:
(1) Model parameters of external gear type four-point contact ball slewing bearings
Model | Dimensions | Installation size | Tooth parameters | Load | Weight | ||||||||||||||
De | de | di | Di | He | Hi | Ht | Fe | Ne | he | Fi | Ni | hi | m | Z | x·m | Dp | |||
[mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [-] | [mm] | [-] | [mm] | [-] | [mm] | [mm] | [kN] | [kg] | |||
1B12-E-0181 | 244 | 182 | 180 | 125 | 25 | 25 | 25 | 214 | 24 | 11 | 144.5 | 20 | 11 | 2 | 120 | – | 240 | – | – |
1B17-E-0235 | 318 | 236 | 234 | 169 | 37 | 34 | 45 | 275 | 20 | 13.5 | 195 | 20 | M12 | 3 | 104 | – | 312 | – | – |
1B20-E-0289 | 379 | 290 | 288 | 210 | 40 | 40 | 45 | 335 | 24 | 13.5 | 240 | 24 | 13.5 | 4 | 92 | – | 372 | – | – |
1B20-E-0314 | 404 | 315.5 | 312.5 | 242 | 45.5 | 45.5 | 56 | 355 | 20 | M12 | 268 | 20 | 14 | 5 | 79 | – | 395 | 30 | 23 |
1B20-E-0414 | 504 | 415.5 | 412.5 | 342 | 45.5 | 45.5 | 56 | 455 | 20 | M12 | 368 | 24 | 14 | 5 | 99 | – | 495 | 30 | 32 |
1B20-E-0544 | 640.8 | 545.5 | 542.5 | 472 | 45.5 | 45.5 | 56 | 585 | 28 | M12 | 498 | 32 | 14 | 6 | 105 | – | 630 | 36 | 43 |
1B20-E-0644 | 742.8 | 645.5 | 642.5 | 572 | 45.5 | 45.5 | 56 | 685 | 32 | M12 | 598 | 36 | 14 | 6 | 122 | – | 732 | 36 | 52 |
1B20-E-0744 | 838.8 | 745.5 | 742.5 | 672 | 45.5 | 45.5 | 56 | 785 | 36 | M12 | 698 | 40 | 14 | 6 | 138 | – | 828 | 36 | 58 |
1B20-E-0844 | 950.4 | 845.5 | 842.5 | 772 | 45.5 | 45.5 | 56 | 885 | 36 | M12 | 798 | 40 | 14 | 8 | 117 | – | 936 | 48 | 71 |
1B20-E-0944 | 1046.4 | 945.5 | 942.5 | 872 | 45.5 | 45.5 | 56 | 985 | 40 | M12 | 898 | 44 | 14 | 8 | 129 | – | 1032 | 48 | 77 |
1B20-E-1094 | 1198.4 | 1095.5 | 1092.5 | 1022 | 45.5 | 45.5 | 56 | 1135 | 44 | M12 | 1048 | 48 | 14 | 8 | 148 | – | 1184 | 48 | 90 |
1B25-E-0455 | 590.4 | 454 | 456 | 355 | 71 | 54 | 80 | 516 | 18 | M20 | 395 | 18 | 22 | 8 | 72 | – | 576 | 77.2 | 74 |
1B25-E-0555 | 694.4 | 554 | 556 | 455 | 71 | 54 | 80 | 616 | 20 | M20 | 495 | 20 | 22 | 8 | 85 | – | 680 | 77.2 | 93 |
1B25-E-0655 | 798.4 | 654 | 656 | 555 | 71 | 54 | 80 | 716 | 24 | M20 | 595 | 24 | 22 | 8 | 98 | – | 784 | 77.2 | 111 |
1B25-E-0755 | 898 | 754 | 756 | 655 | 71 | 54 | 80 | 816 | 24 | M20 | 695 | 24 | 22 | 9 | 98 | – | 882 | 86.8 | 125 |
1B25-E-0855 | 997 | 854 | 856 | 755 | 71 | 54 | 80 | 916 | 28 | M20 | 795 | 28 | 22 | 9 | 109 | – | 981 | 86.8 | 145 |
1B25-E-0955 | 1096 | 954 | 956 | 855 | 71 | 54 | 80 | 1016 | 30 | M20 | 895 | 30 | 22 | 9 | 120 | – | 1080 | 86.8 | 155 |
1B25-E-1055 | 1198 | 1054 | 1056 | 955 | 71 | 54 | 80 | 1116 | 30 | M20 | 995 | 30 | 22 | 10 | 118 | – | 1180 | 96.6 | 171 |
1B25-E-1155 | 1298 | 1154 | 1156 | 1055 | 71 | 54 | 80 | 1216 | 36 | M20 | 1095 | 36 | 22 | 10 | 128 | – | 1280 | 96.6 | 186 |
1B25-E-1255 | 1398 | 1254 | 1256 | 1155 | 71 | 54 | 80 | 1316 | 42 | M20 | 1195 | 42 | 22 | 10 | 138 | – | 1380 | 96.6 | 201 |
1B25-E-1355 | 1498 | 1354 | 1356 | 1255 | 71 | 54 | 80 | 1416 | 42 | M20 | 1295 | 42 | 22 | 10 | 148 | – | 1480 | 96.6 | 218 |
1B25-E-1455 | 1598 | 1454 | 1456 | 1355 | 71 | 54 | 80 | 1516 | 48 | M20 | 1395 | 48 | 22 | 10 | 158 | – | 1580 | 96.6 | 233 |
1B25-E-1204 | 1338 | 1207.5 | 1200.5 | 1119 | 58 | 58 | 68 | 1257 | 45 | 16 | 1151 | 45 | 16 | 10 | 131 | 5 | 1310 | 92.8 | 154 |
1B25-E-1314 | 1448 | 1317.5 | 1310.5 | 1229 | 58 | 58 | 68 | 1367 | 50 | 16 | 1261 | 50 | 16 | 10 | 142 | 5 | 1420 | 92.8 | 166 |
1B25-E-1424 | 1558 | 1427.5 | 1420.5 | 1339 | 58 | 58 | 68 | 1477 | 54 | 16 | 1371 | 54 | 16 | 10 | 153 | 5 | 1530 | 92.8 | 180 |
1B25-E-1534 | 1668 | 1537.5 | 1530.5 | 1449 | 58 | 58 | 68 | 1587 | 60 | 16 | 1481 | 60 | 16 | 10 | 164 | 5 | 1640 | 92.8 | 193 |
1B25-E-1644 | 1791 | 1647.5 | 1640.5 | 1536 | 58 | 58 | 68 | 1708 | 54 | 22 | 1580 | 54 | 22 | 10 | 176 | 6.5 | 1760 | 92.8 | 237 |
1B25-E-1754 | 1901 | 1757.5 | 1750.5 | 1646 | 58 | 58 | 68 | 1818 | 60 | 22 | 1690 | 60 | 22 | 10 | 187 | 6.5 | 1870 | 92.8 | 257 |
1B25-E-1904 | 2073 | 1907.5 | 1900.5 | 1796 | 58 | 58 | 68 | 1968 | 64 | 22 | 1840 | 64 | 22 | 14 | 145 | 6.5 | 2030 | 130 | 300 |
1B50-E-1900 | 2139.2 | 1898 | 1902 | 1729 | 100 | 99 | 109 | 2005 | 36 | 33 | 1795 | 36 | 33 | 14 | 150 | 7 | 2100 | 257 | 820 |
1B50-E-2130 | 2380.8 | 2128 | 2132 | 1959 | 100 | 99 | 109 | 2235 | 48 | 33 | 2025 | 48 | 33 | 16 | 146 | 8 | 2336 | 293.6 | 931 |
(2) Internal gear type four-point contact ball slewing bearings model parameters
Model | Dimensions | Installation size | Tooth parameters | Load | Weight | ||||||||||||||
De | de | di | Di | He | Hi | Ht | Fe | Ne | he | Fi | Ni | hi | m | Z | x·m | Dp | |||
[mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [-] | [mm] | [-] | [mm] | [-] | [mm] | [mm] | [kN] | [kg] | |||
1B15-I-0245 | 300 | 246 | 244 | 174.5 | 32 | 32 | 40 | 280 | 20 | 11 | 210 | 20 | 11 | 3 | 60 | – | 180 | – | – |
1B20-I-0307 | 385 | 309.5 | 306.5 | 217 | 45 | 45 | 55 | 358 | 24 | 13.5 | 259 | 24 | 13.5 | 4 | 56 | – | 224 | – | – |
1B20-I-0314 | 386 | 315.5 | 312.5 | 225 | 45.5 | 45.5 | 56 | 360 | 24 | 14 | 275 | 24 | M12 | 5 | 47 | – | 235 | 31 | 22 |
1B20-I-0414 | 486 | 415.5 | 412.5 | 325 | 45.5 | 45.5 | 56 | 460 | 24 | 14 | 375 | 24 | M12 | 5 | 67 | – | 335 | 31 | 31 |
1B20-I-0544 | 616 | 545.5 | 542.5 | 444 | 45.5 | 45.5 | 56 | 590 | 32 | 14 | 505 | 32 | M12 | 6 | 76 | – | 456 | 37.4 | 43 |
1B20-I-0644 | 716 | 645.5 | 642.5 | 546 | 45.5 | 45.5 | 56 | 690 | 36 | 14 | 605 | 36 | M12 | 6 | 93 | – | 558 | 37.4 | 50 |
1B20-I-0744 | 816 | 745.5 | 742.5 | 648 | 45.5 | 45.5 | 56 | 790 | 40 | 14 | 705 | 40 | M12 | 6 | 110 | – | 660 | 37.4 | 57 |
1B20-I-0844 | 916 | 845.5 | 842.5 | 736 | 45.5 | 45.5 | 56 | 890 | 40 | 14 | 805 | 40 | M12 | 8 | 94 | – | 752 | 50 | 69 |
1B20-I-0944 | 1016 | 945.5 | 942.5 | 840 | 45.5 | 45.5 | 56 | 990 | 44 | 14 | 905 | 44 | M12 | 8 | 107 | – | 856 | 50 | 75 |
1B20-I-1094 | 1166 | 1095.5 | 1092.5 | 984 | 45.5 | 45.5 | 56 | 1140 | 48 | 14 | 1055 | 48 | M12 | 8 | 125 | – | 1000 | 50 | 91 |
1B25-I-0455 | 555 | 454 | 456 | 304 | 54 | 71 | 80 | 515 | 18 | 22 | 394 | 18 | M20 | 8 | 40 | – | 320 | 80.4 | 64 |
1B25-I-0555 | 655 | 554 | 556 | 416 | 54 | 71 | 80 | 615 | 20 | 22 | 494 | 20 | M20 | 8 | 54 | – | 432 | 80.4 | 76 |
1B25-I-0655 | 755 | 654 | 656 | 512 | 54 | 71 | 80 | 715 | 24 | 22 | 594 | 24 | M20 | 8 | 66 | – | 528 | 80.4 | 102 |
1B25-I-0755 | 855 | 754 | 756 | 610 | 54 | 71 | 80 | 815 | 24 | 22 | 694 | 24 | M20 | 10 | 63 | – | 630 | 100.6 | 119 |
1B25-I-0855 | 955 | 854 | 856 | 710 | 54 | 71 | 80 | 915 | 28 | 22 | 794 | 28 | M20 | 10 | 73 | – | 730 | 100.6 | 137 |
1B25-I-0955 | 1055 | 954 | 956 | 810 | 54 | 71 | 80 | 1015 | 30 | 22 | 894 | 30 | M20 | 10 | 83 | – | 830 | 100.6 | 149 |
1B25-I-1055 | 1155 | 1054 | 1056 | 910 | 54 | 71 | 80 | 1115 | 30 | 22 | 994 | 30 | M20 | 10 | 93 | – | 930 | 100.6 | 165 |
1B25-I-1155 | 1255 | 1154 | 1156 | 1010 | 54 | 71 | 80 | 1215 | 36 | 22 | 1094 | 36 | M20 | 10 | 103 | – | 1030 | 100.6 | 180 |
1B25-I-1255 | 1355 | 1254 | 1256 | 1110 | 54 | 71 | 80 | 1315 | 42 | 22 | 1194 | 42 | M20 | 10 | 113 | – | 1130 | 100.6 | 195 |
1B25-I-1355 | 1455 | 1354 | 1356 | 1210 | 54 | 71 | 80 | 1415 | 42 | 22 | 1294 | 42 | M20 | 10 | 123 | – | 1230 | 100.6 | 212 |
1B25-I-1455 | 1555 | 1454 | 1456 | 1310 | 54 | 71 | 80 | 1515 | 48 | 22 | 1394 | 48 | M20 | 10 | 133 | – | 1330 | 100.6 | 227 |
1B25-I-1204 | 1289 | 1207.5 | 1200.5 | 1072 | 58 | 58 | 68 | 1257 | 45 | 16 | 1151 | 45 | 16 | 10 | 108 | -5 | 1080 | 96.6 | 145 |
1B25-I-1314 | 1399 | 1317.5 | 1310.5 | 1182 | 58 | 58 | 68 | 1367 | 50 | 16 | 1261 | 50 | 16 | 10 | 119 | -5 | 1190 | 96.6 | 159 |
1B25-I-1424 | 1509 | 1427.5 | 1420.5 | 1292 | 58 | 58 | 68 | 1477 | 54 | 16 | 1371 | 54 | 16 | 10 | 130 | -5 | 1300 | 96.6 | 172 |
1B25-I-1534 | 1619 | 1537.5 | 1530.5 | 1402 | 58 | 58 | 68 | 1587 | 60 | 16 | 1481 | 60 | 16 | 10 | 141 | -5 | 1410 | 96.6 | 186 |
1B25-I-1644 | 1752 | 1647.5 | 1640.5 | 1495 | 58 | 58 | 68 | 1708 | 54 | 22 | 1580 | 54 | 22 | 10 | 150 | -6.5 | 1500 | 96.6 | 236 |
1B25-I-1754 | 1862 | 1757.5 | 1750.5 | 1605 | 58 | 58 | 68 | 1818 | 60 | 22 | 1690 | 60 | 22 | 10 | 161 | -6.5 | 1610 | 96.6 | 252 |
1B25-I-1904 | 2012 | 1907.5 | 1900.5 | 1729 | 58 | 58 | 68 | 1968 | 64 | 22 | 1840 | 64 | 22 | 14 | 124 | -6.5 | 1736 | 135.2 | 299 |
1B50-I-1800 | 1971 | 1798 | 1802 | 1554 | 99 | 100 | 109 | 1905 | 36 | 33 | 1695 | 36 | 33 | 14 | 112 | -7 | 1568 | 257 | 762 |
1B50-I-2000 | 2171 | 1998 | 2002 | 1764 | 99 | 100 | 109 | 2105 | 40 | 33 | 1895 | 40 | 33 | 14 | 127 | -7 | 1778 | 257 | 843 |
1B50-I-2240 | 2411 | 2238 | 2242 | 1984 | 99 | 100 | 109 | 2345 | 48 | 33 | 2135 | 48 | 33 | 16 | 125 | -8 | 2000 | 293.6 | 961 |
1B50-I-2490 | 2661 | 2488 | 2492 | 2240 | 99 | 100 | 109 | 2595 | 54 | 33 | 2385 | 54 | 33 | 16 | 141 | -8 | 2256 | 293.6 | 1053 |
1B50-I-2800 | 2971 | 2798 | 2802 | 2544 | 99 | 100 | 109 | 2905 | 60 | 33 | 2695 | 60 | 33 | 16 | 160 | -8 | 2560 | 293.6 | 1205 |
(3) Gearless four-point contact ball slewing bearings model parameters
Model | Dimensions | Installation size | Weight | |||||||||||
De | de | di | Di | He | Hi | Ht | Fe | Ne | he | Fi | Ni | hi | ||
[mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [-] | [mm] | [mm] | [-] | [mm] | [kg] | |
1B12-U-0181 | 234 | 182 | 180 | 125 | 25 | 25 | 25 | 214 | 24 | 11 | 144.5 | 20 | 11 | 5 |
1B19-U-0217 | 290 | 218 | 216 | 150 | 41.5 | 40 | 41.5 | 265 | 16 | 14 | 175 | 16 | M12 | 14 |
1B20-U-0260 | 329 | 261 | 259 | 190 | 44 | 44 | 45 | 305 | 16 | 14 | 215 | 16 | 14 | 17 |
1B20-U-0314 | 386 | 315.5 | 312.5 | 242 | 45.5 | 45.5 | 56 | 360 | 20 | 14 | 268 | 20 | 14 | 21 |
1B20-U-0414 | 486 | 415.5 | 412.5 | 342 | 45.5 | 45.5 | 56 | 460 | 24 | 14 | 368 | 24 | 14 | 29 |
1B20-U-0544 | 616 | 545.5 | 542.5 | 472 | 45.5 | 45.5 | 56 | 590 | 32 | 14 | 498 | 32 | 14 | 37 |
1B20-U-0644 | 716 | 645.5 | 642.5 | 572 | 45.5 | 45.5 | 56 | 690 | 36 | 14 | 598 | 36 | 14 | 44 |
1B20-U-0744 | 816 | 745.5 | 742.5 | 672 | 45.5 | 45.5 | 56 | 790 | 40 | 14 | 698 | 40 | 14 | 52 |
1B20-U-0844 | 916 | 845.5 | 842.5 | 772 | 45.5 | 45.5 | 56 | 890 | 40 | 14 | 798 | 40 | 14 | 59 |
1B20-U-0944 | 1016 | 945.5 | 942.5 | 872 | 45.5 | 45.5 | 56 | 990 | 44 | 14 | 898 | 44 | 14 | 66 |
1B20-U-1094 | 1166 | 1095.5 | 1092.5 | 1022 | 45.5 | 45.5 | 56 | 1140 | 48 | 14 | 1048 | 48 | 14 | 77 |
1B25-U-0455 | 555 | 454 | 456 | 355 | 54 | 54 | 63 | 515 | 18 | 22 | 395 | 18 | 22 | 53 |
1B25-U-0555 | 655 | 554 | 556 | 455 | 54 | 54 | 63 | 615 | 20 | 22 | 495 | 20 | 22 | 65 |
1B25-U-0655 | 755 | 654 | 656 | 555 | 54 | 54 | 63 | 715 | 24 | 22 | 595 | 24 | 22 | 76 |
1B25-U-0755 | 855 | 754 | 756 | 655 | 54 | 54 | 63 | 815 | 24 | 22 | 695 | 24 | 22 | 90 |
1B25-U-0855 | 955 | 854 | 856 | 755 | 54 | 54 | 63 | 915 | 28 | 22 | 795 | 28 | 22 | 101 |
1B25-U-0955 | 1055 | 954 | 956 | 855 | 54 | 54 | 63 | 1015 | 30 | 22 | 895 | 30 | 22 | 115 |
1B25-U-1055 | 1155 | 1054 | 1056 | 955 | 54 | 54 | 63 | 1115 | 30 | 22 | 995 | 30 | 22 | 128 |
1B25-U-1155 | 1255 | 1154 | 1156 | 1055 | 54 | 54 | 63 | 1215 | 36 | 22 | 1095 | 36 | 22 | 139 |
1B25-U-1255 | 1355 | 1254 | 1256 | 1155 | 54 | 54 | 63 | 1315 | 42 | 22 | 1195 | 42 | 22 | 150 |
1B25-U-1355 | 1455 | 1354 | 1356 | 1255 | 54 | 54 | 63 | 1415 | 42 | 22 | 1295 | 42 | 22 | 163 |
1B25-U-1455 | 1555 | 1454 | 1456 | 1355 | 54 | 54 | 63 | 1515 | 48 | 22 | 1395 | 48 | 22 | 174 |
1B25-U-1204 | 1289 | 1206 | 1202 | 1119 | 58 | 58 | 68 | 1257 | 45 | 16 | 1151 | 45 | 16 | 121 |
1B25-U-1314 | 1399 | 1316 | 1312 | 1229 | 58 | 58 | 68 | 1367 | 50 | 16 | 1261 | 50 | 16 | 132 |
1B25-U-1424 | 1509 | 1426 | 1422 | 1339 | 58 | 58 | 68 | 1477 | 54 | 16 | 1371 | 54 | 16 | 143 |
1B25-U-1534 | 1619 | 1536 | 1532 | 1449 | 58 | 58 | 68 | 1587 | 60 | 16 | 1481 | 60 | 16 | 154 |
1B25-U-1644 | 1752 | 1646 | 1642 | 1536 | 58 | 58 | 68 | 1708 | 54 | 22 | 1580 | 54 | 22 | 209 |
1B25-U-1754 | 1862 | 1756 | 1752 | 1646 | 58 | 58 | 68 | 1818 | 60 | 22 | 1690 | 60 | 22 | 222 |
1B25-U-1904 | 2012 | 1906 | 1902 | 1796 | 58 | 58 | 68 | 1968 | 64 | 22 | 1840 | 64 | 22 | 241 |
Classification of Slewing Bearings:
According to the rolling element arrangement, slewing bearings can be generally divided into four-point contact ball slewing bearing, crossed roller slewing bearing, three-row roller slewing bearing, and so on. We will devote ourselves to satisfying customers’ demands as a slewing bearing supplier.
Applications of Slewing Bearings:
Slewing bearing has a unique structure that could handle an integrated load like the axle, radial, and overturning hurdle. It combines support, rotating, transmission, fixed, sealed, anti-corrosion, and other functions into one unit. They are widely used in lifting machinery, construction machinery, transmission machinery, mining and metallurgy machinery, medical equipment and radar, ship, wind power, and other industries.
How To Extend The Life Of Rotating Ring Bearings:
In heavy duty applications, premature failure of large diameter bearings is a common fate.
However,Regular maintenance can prevent 96% of rotary ring bearing failures. To maximize bearing life, follow these tips: raceway and gear lubrication, bolt torque inspection and seal inspection.
Most rotary bearing failures are due to lubrication problems, contamination, overload, improper fitting and mounting.
Have a preventative maintenance program that includes bearings, and be alert for these four warning signs of potential bearing problems.
1. Play on bearings
2. Grinding, cracking, or clicking sounds
3. Add torque or binding
4. Debris particles emerge from the seal