Slewing Bearing With Internal Gear

Slewing Bearing With Internal Gear with gear on the internal ring. Gear hardening treatment or not is based on the working conditions. Compared with bearing for swing set with external gear, the internal gear will has longer service life when worked in the same environment due to the gear is in the inner ring, as it can make the gear has good dust prevention and the grease oil can be kept for a longer time and more important the internal teeth have lower transmission contact stress and less wear. However, it is inconvenient for installation and fault diagnosis check after some time using due to the size limitation and compact interior space.

Features and Benefits of Slewing Bearing With Internal Gear

One of the main quality issues we encountered in our aftermarket work a few years ago was raceway noise.

Why is there a raceway noise? We think that the main reason is that the hardness of the raceway is not enough or the quenching depth of the raceway is not enough. After a long period of wear between the steel ball and the raceway, the raceway will be worn out.

Starting from a small area, if the problem become serious, a very loud noise will be emitted. In order to solve this problem, we started from the raceway grinding equipment and the raceway grinding process.

After continuous exploration by engineers and front-line workers, we have successfully mastered and improved the raceway grinding production process, ensuring that there was no noise problems again from that time.

Slewing Bearing With Internal Gear Specifications

Slewing Bearing With Internal Gear

MODEL DIMENSION MOUNTING HOLE GEAR DATA N.W

THOUGH HOLE SCREW HOLE kg

D d H h D1 D2 φ n M L z m da B X

mm mm mm

QN315.20 QN315.20A 408 224 60 10 370 260 17 10 M16 24 70 51 3 4 207 200 40 0.5 34 35

QN355.20 QN355.20A 448 264 60 10 410 300 17 10 M16 24 84 61 3 4 246 240 40 0.5 39 40

QN400.20 QN400.20A 493 310 60 10 455 345 17 12 M16 24 73 57 4 5 288 280 40 0.5 44 46

QN450.20 QN450.20A 543 360 60 10 505 395 17 12 M16 28 85 67 4 5 336 330 40 0.5 50 52

QN500.20 QN500.20A 656 468 60 10 555 445 17 14 M16 28 78 64 5 6 385 378 40 0.5 57 76

QN560.20 QN560.20A 656 468 70 10 618 502 17 14 M16 30 111 88 4 5 440 435 50 0.5 76 77

QN630.20 QN630.20A 726 538 70 10 688 572 17 16 M16 30 129 102 4 5 512 505 50 0.5 84 86

QN710.20 QN710.20A 806 618 70 10 768 652 17 18 M16 30 118 98 5 6 585 582 50 0.5 97 97

QN800.20 QN.800.20A 896 708 70 10 858 742 17 20 M16 30 113 84 6 8 672 664 50 0.5 110 111

QN800.25 QN800.25A 908 694 78 10 864 736 22 18 M20 36 110 82 6 8 654 648 58 0.5 142 142

QN900.25 QN.900.25A 1008 794 78 10 964 836 22 20 M20 36 94 75 8 10 744 740 58 0.5 163 162

QN1000.25 QN1000.25A 1108 894 78 10 1064 936 22 24 M20 36 107 85 8 10 848 840 58 0.5 178 179

QN1000.32 QN1000.32A 1124 880 90 10 1074 926 24 24 M22 40 105 84 8 10 832 830 70 0.5 230 227

QN1120.32 QN1120.32A 1244 1000 90 10 1194 1046 24 28 M22 40 95 79 10 12 940 936 70 0.5 263 262

QN1250.32 QN1250.32A 1374 1130 90 10 1324 1176 24 32 M22 40 108 90 10 12 1070 1068 70 0.5 294 290

QN1400.32 QN1400.32A 1524 1280 90 10 1474 1326 24 36 M22 40 102 87 12 14 1212 1204 70 0.5 333 336

QN1250.40 QN1250.40A 1394 1110 102 12 1336 1164 26 32 M24 45 106 88 10 12 1050 1044 80 0.5 388 388

QN1400.40 QN.1400.40A 1544 1260 102 12 1486 1314 26 36 M24 45 100 86 12 14 1188 1190 80 0.5 444 434

QN1600.40 QN1600.40A 1744 1460 102 12 1686 1514 26 40 M24 45 117 100 12 14 1392 1386 80 0.5 509 511

QN.1800.40 QN1800.40A 1944 1660 102 12 1886 1714 26 44 M24 45 114 99 14 16 1582 1568 80 0.5 576 591

QN1600.50 QN1600.50A 1766 1438 124 12 1704 1496 30 40 M27 50 115 98 12 14 1368 1358 100 0.5 714 723

QN1800.50 QN1800.50A 1966 1638 124 12 1904 1696 30 44 M27 50 113 98 14 16 1568 1552 100 0.5 794 818

QN2000.50 QN2000.50A 2166 1842 124 12 2104 1896 30 48 M27 50 111 98 16 18 1760 1746 100 0.5 891 913