Internal gear external flange slewing bearings are specialized bearings designed to provide high load capacity and precise rotational movement, with the added feature of an external flange. The internal gear mechanism allows for efficient power transmission, while the external flange facilitates easy mounting and integration into various systems. The bearing features an internal gear ring that meshes with an external pinion gear. This internal gear design allows for efficient and compact power transmission within the system. The external flange provides a mounting surface that makes it easier to integrate the bearing into machinery and equipment. It typically includes bolt holes or other features to facilitate secure attachment. Depending on the design, the bearing may use balls or rollers arranged to handle axial, radial, and moment loads effectively.
The internal tooth external flange slewing bearing, also known as the toothed ring bearing, is a vital component in various industrial applications. This article aims to provide a comprehensive understanding of its structure, advantages, and prevalent areas of application.
Structure of Internal Tooth External Flange Slewing Bearing:
The internal tooth external flange slewing bearing consists of an inner ring, an outer ring, rolling elements, internal teeth, and an external flange. The inner and outer rings enable rotational movement, while the rolling elements minimize friction and carry radial and axial loads. The internal teeth engage with a mating gear, ensuring precise motion transmission and control. The external flange provides additional stability and support to the overall structure.
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Model | INA | R.E Model | TG Model | Dimensions (mm) | Installation Dimensions (mm) | Structural Dimensions(mm) | Gear Parameters(mm) | Rated axial static load (KN) | Weight(KG) | ||||||||||||||||||
Da | D | di | H | La | Li | n1 | n2 | φ1 | φ2 | D1 | d | b | h | B | C | Di | da | m | z | do | x | ||||||
SLIR15/280 | 340 | 216 | 39 | 324 | 252 | 20 | 20 | M6 | M6 | 310 | 238 | 30 | 5 | 34 | 34 | 279 | 277 | 4 | 56 | 224 | 300 | 10 | |||||
SLIR20/414Y | VLI200414N ZT | 518 | 325 | 56 | 490 | 375 | 8 | 12 | φ18 | M12 | 458.5 | 350 | 40 | 11.5 | 44.5 | 47.5 | 415.5 | 412.5 | 5 | 67 | 335 | 600 | 28.5 | ||||
SLIR20/414 | VLI 20 0414N ZT RL2 | 516 | 325 | 56 | 490 | 375 | 8 | 12 | φ18 | M12 | 456 | 350 | 40 | 11.5 | 44.5 | 47.5 | 415.5 | 412.5 | 5 | 67 | 335 | 300 | 36.3 | ||||
SLIR20/414 | VLI200414N | 518 | 325 | 56 | 490 | 375 | 8 | 12 | 18 | M12 | 350 | 40 | 8.5 | 44.5 | 47.5 | 415.5 | 412.5 | 5 | 67 | 335 | 295 | 27.5 | |||||
SLIR20/414 | 232.20.0400.013 | 518 | 326.5 | 56 | 490 | 375 | 8 | 12 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 415.5 | 412.5 | 5 | 67 | 335 | 250 | 27.1 | ||||||
SLIR20/414Y | 232.20.0400.503 | 518 | 326.5 | 56 | 490 | 375 | 16 | 12 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 415.5 | 412.5 | 5 | 67 | 335 | 250 | 26.9 | ||||||
SLIR20/414Y1 | 232.21.0475.013 | 517 | 326.5 | 56 | 490 | 375 | 8 | 12 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 415.5 | 411 | 5 | 67 | 335 | 250 | 27.1 | ||||||
SLIR20/414A | I.505.20.00.C | 518 | 326.5 | 56 | 490 | 375 | 8 | 12 | φ18 | M12 | 453 | 46 | 10 | 46 | 46 | 415.5 | 412.5 | 5 | 67 | 335 | 500 | 35.4 | |||||
SLIR20/544Y | VLI200544N ZT | 648 | 444 | 56 | 620 | 505 | 10 | 16 | φ18 | M12 | 588.5 | 44.5 | 11.5 | 44.5 | 47.5 | 545.5 | 542.5 | 6 | 76 | 456 | 790 | 40.6 | |||||
SLIR20/544Y3 | VLI200544N | 648 | 444 | 56 | 620 | 505 | 10 | 16 | 18 | M12 | 44.5 | 11.5 | 44.5 | 47.5 | 545.5 | 542.5 | 6 | 76 | 456 | 385 | 38 | ||||||
SLIR20/544Y2 | 232.20.0500.013 | 648 | 445.2 | 56 | 620 | 505 | 10 | 16 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 545.5 | 542.5 | 6 | 76 | 456 | 330 | 36.9 | ||||||
SLIR20/544Y4 | 232.20.0500.503 | 648 | 445.2 | 56 | 620 | 505 | 20 | 16 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 545.5 | 542.5 | 6 | 76 | 456 | 330 | 36.7 | ||||||
SLIR20/544Y1 | 232.21.0575.013 | 647 | 445.2 | 56 | 620 | 505 | 10 | 16 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 545.5 | 541 | 6 | 76 | 456 | 330 | 36.9 | ||||||
SLIR20/544 | I.650.20.00.C | 648 | 445.2 | 56 | 620 | 505 | 10 | 16 | φ18 | M12 | 583 | 46 | 10 | 46 | 46 | 545.5 | 542.5 | 6 | 76 | 456 | 700 | 40.2 | |||||
SLIR20/644Y | VLI200644N ZT | 748 | 546 | 56 | 720 | 605 | 12 | 18 | φ18 | M12 | 688.5 | 44.5 | 11.5 | 44.5 | 47.5 | 645.5 | 642.5 | 6 | 93 | 558 | 900 | 47.4 | |||||
SLIR20/644Y2 | VLI200644N | 748 | 546 | 56 | 720 | 605 | 12 | 18 | 18 | M12 | 44.5 | 8.5 | 44.5 | 47.5 | 645.5 | 642.5 | 6 | 93 | 558 | 455 | 45 | ||||||
SLIR20/644Y3 | 232.20.0600.013 | 748 | 547.2 | 56 | 720 | 605 | 12 | 18 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 645.5 | 642.5 | 6 | 93 | 558 | 390 | 43.7 | ||||||
SLIR20/644Y | 232.20.0600.503 | 748 | 547.2 | 56 | 720 | 605 | 24 | 18 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 645.5 | 642.5 | 6 | 93 | 558 | 390 | 43.4 | ||||||
SLIR20/644Y1 | . | 232.21.0675.013 | 747 | 547.2 | 56 | 720 | 605 | 12 | 18 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 645.5 | 641 | 6 | 93 | 558 | 390 | 43.7 | |||||
SLIR20/644 | I.750.20.00.C | 748 | 547.2 | 56 | 720 | 605 | 12 | 18 | φ18 | M12 | 683 | 46 | 10 | 46 | 46 | 645.5 | 642.5 | 6 | 93 | 558 | 780 | 53.3 | |||||
SLIR20/744Y | VLI200744N ZT | 848 | 648 | 56 | 820 | 705 | 12 | 20 | φ18 | M12 | 788.5 | 44.5 | 11.5 | 44.5 | 47.5 | 745.5 | 742.5 | 6 | 110 | 660 | 530 | 54 | |||||
SLIR20/744Y3 | VLI200744N | 848 | 648 | 56 | 820 | 705 | 12 | 20 | 18 | M12 | 44.5 | 8.5 | 44.5 | 47.5 | 745.5 | 742.5 | 6 | 110 | 660 | 530 | 51.5 | ||||||
SLIR20/744Y2 | 232.20.0700.013 | 848 | 649.2 | 56 | 820 | 705 | 12 | 20 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 745.5 | 742.5 | 6 | 110 | 660 | 450 | 51.1 | ||||||
SLIR20/744Y4 | 232.20.0700.503 | 848 | 649.2 | 56 | 820 | 705 | 24 | 20 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 745.5 | 742.5 | 6 | 110 | 660 | 450 | 50.8 | ||||||
SLIR20/744Y1 | 232.21.0775.013 | 847 | 649.2 | 56 | 820 | 705 | 12 | 20 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 745.5 | 741 | 6 | 110 | 660 | 450 | 51.1 | ||||||
SLIR20/744 | I.850.20.00.C | 848 | 649.2 | 56 | 820 | 705 | 12 | 20 | φ18 | M12 | 783 | 46 | 10 | 46 | 46 | 745.5 | 742.5 | 6 | 110 | 660 | 910 | 63.1 | |||||
SLIR20/844Y | VLI200844N ZT | 948 | 736 | 56 | 920 | 805 | 14 | 20 | φ18 | M12 | 888.5 | 44.5 | 11.5 | 44.5 | 47.5 | 845.5 | 842.5 | 8 | 94 | 752 | 1200 | 65.2 | |||||
SLIR20/844Y2 | VLI200844N | 948 | 736 | 56 | 920 | 805 | 14 | 20 | 18 | M12 | 44.5 | 8.5 | 44.5 | 47.5 | 845.5 | 842.5 | 8 | 94 | 752 | 600 | 61.5 | ||||||
SLIR20/844Y3 | 232.20.0800.013 | 948 | 737.6 | 56 | 920 | 805 | 14 | 20 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 845.5 | 842.5 | 8 | 94 | 752 | 510 | 61.6 | ||||||
SLIR20/844Y4 | 232.20.0800.503 | 948 | 737.6 | 56 | 920 | 805 | 28 | 20 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 845.5 | 842.5 | 8 | 94 | 752 | 510 | 61.3 | ||||||
SLIR20/844Y1 | 232.21.0875.013 | 947 | 737.6 | 56 | 920 | 805 | 14 | 20 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 845.5 | 841 | 8 | 94 | 752 | 510 | 61.6 | ||||||
SLIR20/844 | I.950.20.00.C | 948 | 737.6 | 56 | 920 | 805 | 14 | 20 | φ18 | M12 | 883 | 46 | 10 | 46 | 46 | 845.5 | 842.5 | 8 | 94 | 752 | 1030 | 76.6 | |||||
SLIR30/955 | VLI300955N | 1100 | 810 | 90 | 1060 | 894 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 953 | 957 | 10 | 83 | 830 | 2550 | 164 | ||||||
SLIR30/955Y2 | 282.30.0900.013 | 1100 | 812 | 90 | 1060 | 894 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 953.5 | 956.5 | 10 | 83 | 830 | 1750 | 159 | ||||||
SLIR30/955Y | 282.30.0975.013 | 1098 | 812 | 90 | 1060 | 894 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 953.5 | 955 | 10 | 83 | 830 | 1750 | 159 | ||||||
SLIR30/955Y1 | I.1100.32.00.C | 1100 | 812 | 90 | 1060 | 894 | 30 | 30 | φ12 | M20 | 1017 | 71 | 19 | 71 | 71 | 955 | 955 | 10 | 83 | 830 | 2250 | 159 | |||||
SLIR20/944Y | VLI200944N ZT | 1048 | 840 | 56 | 1020 | 905 | 16 | 22 | φ18 | M12 | 988.5 | 44.5 | 11.5 | 44.5 | 47.5 | 945.5 | 942.5 | 8 | 107 | 856 | 1350 | 71 | |||||
SLIR20/944Y2 | VLI200944N | 1048 | 840 | 56 | 1020 | 905 | 16 | 22 | 18 | M12 | 44.5 | 8.5 | 44.5 | 47.5 | 945.5 | 942.5 | 8 | 107 | 856 | 670 | 67.5 | ||||||
SLIR20/944Y3 | 232.20.0900.013 | 1048 | 841.6 | 56 | 1020 | 905 | 16 | 22 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 845.5 | 942.5 | 8 | 107 | 856 | 570 | 65.8 | ||||||
SLIR20/944Y4 | 232.20.0900.503 | 1048 | 841.6 | 56 | 1020 | 905 | 32 | 22 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 945.5 | 942.5 | 8 | 107 | 856 | 570 | 65.4 | ||||||
SLIR20/944Y1 | 232.21.0975.013 | 1047 | 841.6 | 56 | 1020 | 905 | 16 | 22 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 845.5 | 941 | 8 | 107 | 856 | 570 | 65.8 | ||||||
SLIR20/944 | I.1050.20.00.C | 1048 | 841.6 | 56 | 1020 | 905 | 16 | 22 | φ18 | M12 | 983 | 46 | 10 | 46 | 46 | 945.5 | 942.5 | 8 | 107 | 856 | 1440 | 79.8 | |||||
SLIR30/1055 | VLI301055N | 1200 | 910 | 90 | 1160 | 994 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 1053 | 1057 | 10 | 93 | 930 | 2800 | 181 | ||||||
SLIR30/1055Y2 | 282.30.1000.013 | 1200 | 912 | 90 | 1160 | 994 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 1053.5 | 1056.5 | 10 | 93 | 930 | 1840 | 176 | ||||||
SLIR30/1055Y | 282.30.1075.013 | 1198 | 912 | 90 | 1160 | 994 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 1053.5 | 1055 | 10 | 93 | 930 | 1840 | 176 | ||||||
SLIR30/1055Y1 | I.1200.32.00.C | 1200 | 912 | 90 | 1160 | 994 | 30 | 30 | φ12 | M20 | 1117 | 71 | 19 | 71 | 71 | 1055 | 1055 | 10 | 93 | 930 | 2500 | 176 | |||||
SLIR20/1094Y | VLI201094N ZT | 1198 | 984 | 56 | 1170 | 1055 | 16 | 24 | φ18 | M12 | 1138.5 | 44.5 | 11.5 | 44.5 | 47.5 | 1095.5 | 1092.5 | 8 | 125 | 1000 | 2000 | 80 | |||||
SLIR20/1094Y3 | VLI201094N | 1198 | 984 | 56 | 1170 | 1055 | 16 | 24 | 18 | M12 | 44.5 | 8.5 | 44.5 | 47.5 | 1095.5 | 1092.5 | 8 | 125 | 1000 | 770 | 81.5 | ||||||
SLIR20/1094Y2 | 232.20.1000.013 | 1198 | 985.6 | 56 | 1170 | 1055 | 16 | 24 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 1095.5 | 1092.5 | 8 | 125 | 1000 | 665 | 80.7 | ||||||
SLIR20/1094Y4 | 232.20.1000.503 | 1198 | 985.6 | 56 | 1170 | 1055 | 32 | 24 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 1095.5 | 1092.5 | 8 | 125 | 1000 | 665 | 80.3 | ||||||
SLIR20/1094Y1 | 232.21.1075.013 | 1197 | 985.6 | 56 | 1170 | 1055 | 16 | 24 | 18 | M12 | 45.5 | 10.5 | 45.5 | 45.5 | 1095.5 | 1091 | 8 | 125 | 1000 | 665 | 80.7 | ||||||
SLIR20/1094 | I.1200.20.00.C | 1198 | 985.6 | 56 | 1170 | 1055 | 16 | 24 | φ18 | M12 | 1133 | 46 | 10 | 46 | 46 | 1095.5 | 1092.5 | 8 | 125 | 1000 | 1700 | 101 | |||||
SLIR20/1091 | 1198 | 986 | 56 | 1170 | 1055 | 16 | 24 | φ18 | M12 | 1134 | 46 | 10 | 46 | 46 | 1093 | 1089 | 8 | 125 | 1000 | 1740 | 89 | ||||||
SLIR30/1155 | VLI301155N | 1300 | 1010 | 90 | 1260 | 1094 | 36 | 36 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1153 | 1157 | 10 | 103 | 1030 | 3100 | 198 | ||||||
SLIR30/1155Y2 | 282.30.1100.013 | 1300 | 1012 | 90 | 1260 | 1094 | 36 | 36 | 22 | M20 | 71 | 19 | 71 | 71 | 1153.5 | 1156.5 | 10 | 103 | 1030 | 1900 | 192 | ||||||
SLIR30/1155Y | 282.30.1175.013 | 1298 | 1012 | 90 | 1260 | 1094 | 36 | 36 | 22 | M20 | 71 | 19 | 71 | 71 | 1153.5 | 1155 | 10 | 103 | 1030 | 1900 | 192 | ||||||
SLIR30/1155Y1 | I.1300.32.00.C | 1300 | 1012 | 90 | 1260 | 1094 | 36 | 36 | φ12 | M20 | 1217 | 71 | 19 | 71 | 71 | 1155 | 1155 | 10 | 103 | 1030 | 2700 | 192 | |||||
SLIR30/1255 | VLI301255N | 1400 | 1110 | 90 | 1360 | 1194 | 42 | 42 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1253 | 1257 | 10 | 113 | 1130 | 3350 | 215 | ||||||
SLIR30/1255Y2 | 282.30.1200.013 | 1400 | 1112 | 90 | 1360 | 1194 | 42 | 42 | 22 | M20 | 71 | 19 | 71 | 71 | 1253.5 | 1256.5 | 10 | 113 | 1130 | 1950 | 208 | ||||||
SLIR30/1255Y | 282.30.1275.013 | 1398 | 1112 | 90 | 1360 | 1194 | 42 | 42 | 22 | M20 | 71 | 19 | 71 | 71 | 1253.5 | 1255 | 10 | 113 | 1130 | 1950 | 208 | ||||||
SLIR30/1255Y1 | I.1400.32.00.C | 1400 | 1112 | 90 | 1360 | 1194 | 42 | 42 | φ12 | M20 | 1317 | 71 | 19 | 71 | 71 | 1255 | 1255 | 10 | 113 | 1130 | 3000 | 208 | |||||
SLIR30/1355Y1 | VLI301355N | 1500 | 1210 | 90 | 1460 | 1294 | 42 | 42 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1353 | 1357 | 10 | 123 | 1230 | 3600 | 233 | ||||||
SLIR30/1355Y2 | 282.30.1300.013 | 1500 | 1212 | 90 | 1460 | 1294 | 42 | 42 | 22 | M20 | 71 | 19 | 71 | 71 | 1353.5 | 1356.5 | 10 | 123 | 1230 | 2000 | 226 | ||||||
SLIR30/1355Y | 282.30.1375.013 | 1498 | 1212 | 90 | 1460 | 1294 | 42 | 42 | 22 | M20 | 71 | 19 | 71 | 71 | 1353.5 | 1355 | 10 | 123 | 1230 | 2000 | 226 | ||||||
SLIR30/1355 | I.1500.32.00.C | 1500 | 1212 | 90 | 1460 | 1294 | 42 | 42 | φ12 | M20 | 1417 | 71 | 19 | 71 | 71 | 1355 | 1355 | 10 | 123 | 1230 | 3200 | 226 | |||||
SLIR30/1455 | 282.30.1400.013 | 1600 | 1310 | 90 | 1560 | 1394 | 48 | 48 | 22 | M20 | 71 | 19 | 71 | 71 | 1453.5 | 1456.5 | 10 | 133 | 1330 | 2050 | 243 | ||||||
SLIR30/1455Y | 282.30.1475.013 | 1598 | 1310 | 90 | 1560 | 1394 | 48 | 48 | 22 | M20 | 71 | 19 | 71 | 71 | 1453.5 | 1455 | 10 | 133 | 1330 | 2050 | 243 | ||||||
SLIR30/1455Y1 | I.1600.32.00.C | 1600 | 1310 | 90 | 1560 | 1394 | 48 | 48 | φ12 | M20 | 1517 | 71 | 19 | 71 | 71 | 1455 | 1455 | 10 | 133 | 1330 | 3380 | 243 | |||||
SLIR30/1455Y2 | VLI301455N | 1600 | 1310 | 90 | 1560 | 1394 | 48 | 48 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1453 | 1457 | 10 | 133 | 1330 | 4000 | 251 |
1. High Load Carrying Capacity: The design of the internal tooth external flange slewing bearing allows it to accommodate significant radial, axial, and moment loads, making it suitable for heavy-duty applications.
2. Compact Structure: With its compact design, this type of bearing requires minimal installation space, allowing for efficient and space-saving machinery designs.
3. Smooth and Precise Rotation: The internal teeth and corresponding mating gears ensure precise motion control, resulting in smooth and accurate rotational movement.
4. Enhanced Rigidity: The external flange provides additional support, increasing the overall rigidity of the slewing bearing and minimizing deflection.
5. Long Service Life: Proper material selection, heat treatment, and lubrication contribute to the extended service life of internal tooth external flange slewing bearings, improving reliability and reducing maintenance costs.
1. Construction Machinery: From excavators and cranes to cement mixers and concrete pumps, internal tooth external flange slewing bearings are extensively used in the construction industry. Their ability to withstand heavy loads and withstand harsh operating conditions makes them ideal for such applications.
2. Wind Turbines: In wind energy generation, internal tooth external flange slewing bearings are employed in the yaw and pitch systems. They ensure precise control of rotor positioning and withstand the forces exerted by wind gusts and high rotational speeds.
3. Industrial Machinery: Many types of industrial machinery, such as rotating platforms, turntables, and assembly line equipment, rely on the smooth and controlled rotation provided by internal tooth external flange slewing bearings.
4. Material Handling: Cranes, hoists, and conveyor systems often incorporate these bearings to facilitate efficient material handling in industries like mining, logistics, and manufacturing.
5. Robotic Applications: The compact design, high load-carrying capacity, and precise motion control of internal tooth external flange slewing bearings make them suitable for robotic arms and manipulators.
The internal tooth external flange slewing bearing plays a crucial role in various industries by enabling smooth, controlled rotation and withstanding heavy loads. Its advantages, including compactness, high load capacity, and enhanced rigidity, make it a preferred choice for numerous applications. Whether in construction machinery, wind turbines, industrial machinery, material handling, or robotic applications, this type of bearing ensures reliable and efficient operation, contributing to the success of various industries.