Cov tub rog Asmeskas cov tub rog xav tau cov khoom tseem ceeb uas yuav tsum tau ua kom ntseeg tau, ruaj khov, thiab ua haujlwm tau zoo. Ib qho ntawm cov khoom tseem ceeb hauv aircraft yog bearings, uas muab kev sib tw thiab zoo sib xws rau kev sib hloov qhov chaw. Ntau hom bearings yog siv nyob rau hauv aircraft, nyob ntawm seb lawv xav tau daim ntawv thov thiab yuav tsum tau. Feem ntau, aircraft bearings yog tsim los ua haujlwm nyob rau hauv huab cua kub, siab loads thiab ceev, thiab corrosive ib puag ncig.
Ib qho ntawm cov kabmob feem ntau siv hauv cov tub rog dav hlau yog cov kabmob pob, uas suav nrog ntau lub pob txav ntawm sab hauv thiab sab nraud. Pob bearings tuaj yeem ua haujlwm siab ceev thiab thauj khoom thiab xa cov radial thiab axial rog. Cov bearings no feem ntau yog siv rau hauv lub cav, gearbox, thiab pab pawg fais fab.
Lwm hom kabmob uas haum rau kev siv tub rog dav hlau yog cov menyuam kabmob. Raws li nws lub npe qhia, cov menyuam bearings siv cylindrical rollers es tsis txhob ntawm cov pob rau kev txav mus los. Cov menyuam bearings tuaj yeem ua haujlwm ntau dua thiab muab ntau dua radial thiab axial force kis. Cov kabmob no feem ntau yog siv rau hauv kev tsaws iav, tswj qhov chaw, thiab kev sib kis.
Tapered roller bearings kuj tau siv dav hauv cov tub rog dav hlau. Lawv muaj tapered rollers thiab pab kom siab radial thiab axial load peev. Tapered roller bearings feem ntau yog siv nyob rau hauv lub cav, gearbox, thiab helicopter rotor systems.
Ntxiv nrog rau cov kabmob no, qee lub dav hlau yuav tsum muaj cov kabmob tshwj xeeb xws li cov kabmob kheej kheej, cov kabmob phau ntawv, thiab cov kabmob thrust. Spherical bearings yog tus kheej-aligning bearings thiab siv nyob rau hauv tis tswj qhov chaw thiab tsaws iav tshuab. Phau ntawv xov xwm bearings txhawb nqa radial loads thiab yog tsim los tiv taus kub thiab ceev. Thrust bearings yog tsim los nqa axial quab yuam thiab feem ntau siv nyob rau hauv lub cav thiab kis.
Zuag qhia tag nrho, cov bearings siv nyob rau hauv US cov tub rog aircraft yuav tsum tau raws li nruj nruj qauv thiab ua raws li nruj kev ntsuam xyuas thiab ntawv pov thawj cov txheej txheem ua ntej tau txais kev tso cai rau siv. Cov kabmob no ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb, kev ntseeg siab, thiab ua haujlwm zoo ntawm cov tub rog dav hlau.
| Bearing Part Number | qhov loj (mm) |
| 48290dw/48220/48220dw | 127x182.562x158.75 |
| 67391dw/67322/67323d | 130.175x196.85x200.025 |
| 48393d/48320/48320d | 136.525x190.5x161.925 |
| 48680dgw/48620/48620d | 139.7x 200.025x160.34 |
| 73550d / 73875 / 73876cd | 139.7x222.25x127 |
| NP965846/NP711787 | 150x210x190 |
| m231649d/m231610/m231610cd | 152.4x222.25x174.625 |
| 81601d / 81962 / 81963cd | 152.4x244.475x187.325 |
| 517060d / 517117 / 517118xd | 152.4x298.45x228.6 |
| 46791dw/46720/46721d | 165.1x225.425x168.276 |
| 67791dgw/67720 ib | 177.8x247.650x192.088 |
| 82681dgw/82622/82622d | 177.8x273.05x234.947 |
| 91700d/91112/91113xd | 177.8x285.75x222.245 |
| 94706d/94113/94114cd | 177.8x288.925x263.525 |
| Hm237545d/Hm237510/Hm237511 Xd | 177.8x288.925x266.7 |
| e280700d/281200/281201d | 177.8x304.8x233.365 |
| ee210700d/211300/211301 Xd | 177.8x330.2x234.95 |
| m238849dw/m238810/m238810d | 187.325x269.875x211.138 |
| 67885dw/67820 ib | 190.5x266.7x188.914 |
| ib 420750d/421450 | 190.5x368.3x387.35 |
| m240648dgw/m240611/m240611d | 198.438x284.162x225.425 |
| ib 132081d/132125/132126d | 203.2x317.5x209.55 |
| 93580d/93520/93520 Xd | 203.2x317.5x222.247 |
| 93800dgw/93125/93127cd | 203.2x317.5x266.7 |
| 93801d/93125 | 203.2x317.5x336.55 |
| 8976d / 8920 / 8920 Xd | 203.352x298.45x174.628 |
| 67986dgw/67920/67921d | 206.375x282.575x190.5 |
| 96851dw/96140/96140cd | 215.9x355.6x269.875 |
| lm742749dw / lm742714 / lm742714d | 215.9x288.925x177.8 |
| 9974dw / 9920 / 9920d wb | 216.103x330.2x269.875 |
| nP881565/nP552013 | 220 34x303.5 303.5x398 |
| m244249dgw /m244210 /m244210cd | 220.662x314.325x239.712 |
| lm245149dgw / lm245110 / lm245110d | 228.6x311.15x200.025 |
| ee130901d /131400/131401cd | 228.6x355.6x254 |
| ee529090dw /529157/529158Xd | 228.6x400.05x296.875 |
| ee700090d/ 700167/700168d | 228.6x425.45x361.95 |
| 8576dw/8520/8520cd | 234.95x327.025x196.85 |
| H247549d /H247510 | 234.95x384.175x457.995 |
| Jm447749dw/ Jm447710/ Jm447710d | 240x338x248 |
| nP461520/nP464023 /nP467114 | 240x360x308.5 |
| ee127097dw/127135/127136cd | 241.478x349.148x228.6 |
| lm247747dgw /lwm247714 | 243.975x329.949x245.999 |
| lm247748dgw/ lm247710 | 244.475x327.025x193.675 |
| ee126096dgw /126150/126151cd | 244.475x381x304.8 |
| HH249949d - HH249910 - | 247.65x406.4x446.532 |
| nP872981 /nP240622/nP560475 | 250.283x339.938x230 |
| Hm 252340d / Hm 252315 / Hm 252315d | 250.825x431.724x298.453 |
| m249748dgw/ m249710 | 254x358.775x269.875 |
| ib 822101d /822175/822176d | 254x 444.5x279.4 |
| nP639186/nP980566/nP423191 | 260x440x300x4520 |
| ee134102d / 134143 / 134144cd | 260.350x365.125x228.6 |
| ee221025d / 221575 / 221576cd | 260.35x400.050x253.995 |
| 324103d / 324160 / 324161d | 260.350x406.4x317.5 |
| 435103d / 435165 / 435165d | 260.350x419.1x330.2 |
| lm451349dgw/ lm451310 | 266.7x355.6x228.600 |
| ib 275106d/275160/275161d | 266.7x406.4x260.355 |
| m252349dw /m252310 /m252310cd | 269.875x381x282.575 |
| 89108d / 89150 / 89151 Xd | 276.225x381x209.55 |
| ee275109dgw /275155/275156cd | 276.225x393.7x269.878 |
| m652949dw/m652911 | 279.4x393.7x270.078 |
| ee135111dgw/ 135155/135156d | 279.4x393.7x269.875 |
| HH255149d / HH255110 / – | 279.4x457.2x536.778 |
| ee722111d /722185/722186cd | 279.4x469.9x349.250 |
| ib 941106d/941950 | 279.4x495.3x384.175 |
| nP636921 /nP371486 /nP980520 | 280x420x280 |
| nP419087 /nP501430/nP279609 | 280.316x389.938x275 |
| lm654648dw / lm654610 / lm654610cd | 285.75x380.898x244.475 |
| m255449dgw /m255410 | 288.925x406.4x298.45 |
| 330116d /330166 /330167d | 292.1x422.275x269.875 |
| 921150d / 921875 / 921876d | 292.1x476.25x292.1 |
| lm255749dgw / lm255710 ib | 294.975x389.898x220 |
| ee291176d/ 291750/291751cd | 298.45x444.5x241.3 |
| ee129119dg/129174/129175Xd | 299.975x439.948x279.4 |
| nP549475/nP695911/nP075542 | 300x460x388.5 |
| Hm256849dw/Hm256810/Hm256810cd | 300.038x422.275x311.15 |
| ib 329119d /329172/329173d | 304.648x438.048x279.4 |
| m757448dgw/ m757410/ m757410d | 304.648x438.048x279.4 |
| m257149dw/ m257110/ m257110d | 304.8x419.1x269.875 |
| e724121d /724195 /724196cd | 304.8x495.3x349.25 |
| Hm258949d /Hm258910 / Hm258910d | 304.8x501.65x336.547 |
| m257248dgw/ m257210/ m257210d | 304.902x412.648x266.7 |
| nP218100 /nP394908/nP087208 | 310x400x300 |
| lm258648dgw/lm258610/lm258610d | 317.5x422.275x269.875 |
| Hm259047dgw/Hm259010/Hm259010d | 317.5x447.675x327.025 |
| Hm259049dw/Hm259010/Hm259010cd | 317.5x447.675x327.025 |
| ee141250d/142551/142550 Xd | 317.5x647.7x419.1 |
