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Light weight series slewing bearings 

(Thin section slewing bearing)

 



For reason of economy the bearing cross sections in this standard series are relatively small. It is , therefore, necessary to mount these bearings on a distortion-proof companion structure. The contact surfaces for the bearings must be flat to avoid bearing distortion during bolting as this might cause tight spots in the raceways which would lead to peak loads at these points. For this reason, machining of all contact surfaces is required.

 

Structure

1, Light series, with external gear teeth/with internal gear teeth/without gear teeth

2, Inner ring in the form of an L-section ring/outer ring in the form of an L-section ring/inner and outer rings in the form of L-section rings.

3, Chrome steel balls arranged with plastic spacers.


    



Light Weight Series Slewing Bearings with External Gear Teeth




Designation Mass
 
≈kg
Dimensions Fixing holes5) Gear teeth Tooth force Basic load ratings
Da di Di da La na3) Li ni3) d0 m z Fz norm Fz max axial radial
dyn.
Ca
stat.
C0a
dyn.
Cr
stat.
C0r
kN kN kN kN kN kN
VLA 20 0414 N 29.5 503.3 304+0.5 415.5+0.5 412.5-0.5 455 10 332 12 495 5 99 15.9 23.6 169 295 111 110
VLA 20 0544 N 41.5 640.3 434+0.5 545.5+0.5 542.5-0.5 585 14 462 14 630 6 105 21.3 31.5 188 385 123 145
VLA 20 0644 N 48.5 742.3 534+0.6 645.5+0.6 642.5-0.6 685 16 562 16 732 6 122 21.3 31.5 200 455 131 171
VLA 20 0744 N 54.5 838.1 634+0.6 745.5+0.6 742.5-0.6 785 18 662 16 828 6 138 21.3 31.5 211 530 138 198
VLA 20 0844 N 65.5 950.1 734+0.6 845.5+0.6 842.5-0.6 885 18 762 18 936 8 117 28.3 42 222 600 145 224
VLA 20 0944 N 71.5 1046.1 834+0.7 945.5+0.7 942.5-0.7 985 20 862 20 1032 8 129 28.3 42 231 670 151 250
VLA 20 1094 N 83.5 1198.1 984+0.7 1095.5+0.7 1092.5-0.7 1135 22 1012 20 1184 8 148 28.3 42 244 770 160 290


Light Weight Series Slewing Bearings with Internal Gear Teeth




Designation Mass
 
≈kg
Dimensions Fixing holes5) Gear teeth Tooth force Basic load ratings
Da di Di da La na3) Li ni3) d0 m z Fz norm Fz max axial radial
dyn.
Ca
stat.
C0a
dyn.
Cr
stat.
C0r
kN kN kN kN kN kN
VLI 20 0414 N 27.5 518-0.5 325 415.5+0.5 412.5-0.5 490 8 375 12 335 5 67 17.7 26.2 169 295 111 110
VLI 20 0544 N 38 648-0.5 444 545.5+0.5 542.5-0.5 620 10 505 16 456 6 76 23.7 35 188 385 123 145
VLI 20 0644 N 45 748-0.6 546 645.5+0.6 642.5-0.6 720 12 605 18 558 6 93 23.7 35 200 455 131 171
VLI 20 0744 N 51.5 848-0.6 648 745.5+0.6 742.5-0.6 820 12 705 20 660 6 110 23.7 35 211 530 138 198
VLI 20 0844 N 61.5 948-0.6 736 845.5+0.6 842.5-0.6 920 14 805 20 752 8 94 31.4 46.7 222 600 145 224
VLI 20 0944 N 67.5 1048-0.7 840 945.5+0.7 942.5-0.7 1020 16 905 22 856 8 107 31.4 46.7 231 670 151 250
VLI 20 1094 N 81.5 1198-0.5 984 1095.5+0.7 1092.5-0.7 1170 16 1055 24 1000 8 125 31.4 46.7 244 770 160 290


Light Weight Series Slewing Bearings without Gear Teeth




Designation Mass
 
≈kg
Dimensions Fixing holes5) Basic load ratings
Da di Di da La na3) Li ni3) axial radial
dyn.
Ca
stat.
C0a
dyn.
Cr
stat.
C0r
kN kN kN kN
VLU 20 0414 N 23.5 518-0.5 304+0.5 415.5+0.5 412.5-0.5 490 8 332 12 169 295 111 110
VLU 20 0544 N 31 648-0.5 434+0.5 545.5+0.5 542.5-0.5 620 10 462 14 188 385 123 145
VLU 20 0644 N 36.5 748-0.6 534+0.6 645.5+0.6 642.5-0.6 720 12 562 16 200 455 131 171
VLU20 0744 N 42.5 848-0.6 634+0.6 745.5+0.6 742.5-0.6 820 12 662 16 211 530 138 198
VLU 20 0844 N 48 948-0.6 734+0.6 845.5+0.6 842.5-0.6 920 14 762 18 222 600 145 224
VLU 20 0944 N 54 1048-0.7 834+0.7 945.5+0.7 942.5-0.7 1020 16 862 20 231 670 151 250
VLU 20 1094 N 62.5 1198-0.5 984+0.7 1095.5+0.7 1092.5-0.7 1170 16 1012 20 244 770 160 290