Trek roligi/pastki rolik/pastki rolik/ tayanch g'ildiragi/rolik korpusi
Bottom Roller - bu mashinaning og'irligini qo'llab-quvvatlaydigan g'ildirak.
Yo'l poyafzalining asosiy vazifasi mashinaning og'irligini qo'llab-quvvatlash, lokomotiv birligining og'irligini va ko'tarilgan yuklarning og'irligini erga o'tkazish va bir vaqtning o'zida yo'l poyabzal yuzasida dumalab turishdir.
Va pastki rolik ham lateral sirpanishni oldini olish uchun yo'lni cheklashda ma'lum rol o'ynashi mumkin. Mashina aylantirilganda, rolikli korpus yo'lni erga siljishga majbur qiladi.
To'liq pastki tsilindrni asosan g'ildirak tanasi, mis qisma, mil, so'nggi qopqoq, moy muhri, "O" halqasi va boshqa qismlardan iborat. Pastki rolikning xizmat qilish muddatini ta'minlash uchun biz ushbu qismlar uchun yuqori sifatli materiallarni tanlaymiz.
Ombordagi mavjud pastki rolik:
HITACHI:CX500-2,CX900,CX900HD,CX1000,CX1100,CK550,KH125-2,KH125-3,KH125-3 Havola turi,KH125D,KH150,KH{{11} },KH150-3,KH180,KH180-2,KH180-3
IHI: 5035, 5045, 5055, 5100, 5170, 7035, 7045, 7050, 7055, 7065, 7070, 7080, 7090, 7100, 7120, 7150, 7200, 7250, 7260, 7300, 70552, 7055-1, 7055-2, 7055-3, 7055-3F, 7065-2, 7080-2, 7120S
LIEBHERR: LR1100, LR1160, LR1200, LR1250, LR1280, LR1300, LR1350, LR1400, LR1400-2, LR1550, LR1600, LR1600-2, LR1600, LR1650,
SUMITOMO: LS118, LS118RH, LS118RH3, LS118RH5, LS118RH5 havola turi, LS118RM, LS120RH5, LS138, LS138RH5, LS138RHD, LS138RHD5, LS2828RH5, LS218RHLS2, H3, LS238R H5, LS248RH5, LS368RH5, LS458HD, LS468
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