Radial labli muhr nima?

Radial labli muhr (moyli muhr) — bu aylanuvchi val bo'ylab podshipnik korpusidan moylash vositasining chiqib ketishini oldini oluvchi germetizatsiya elementi. U val sirtiga prujina bilan bosilgan egiluvchan labdan, shuningdek korpus teshigiga press-fit usulida o'rnatish uchun metall qobiqdan iborat.

Muhr o'lchamini qanday tanlash kerak?

Muhr o'lchami uchta parametr bilan aniqlanadi: val diametri (d), korpus/teshik diametri (D) va kengligi (b). ISO 6194 bo'yicha standart o'lchamlar afzal sonlar qatoriga amal qiladi. Val sirtining tozaligi (Ra 0,2–0,8 μm) va qattiqligi (≥45 HRC) tegishli darajada bo'lishi kerak.

Standart labli muhr uchun maksimal aylanish tezligi qancha?

Standard NBR lip seals work up to a peripheral speed of about 12–15 m/s. FKM (Viton) seals can handle slightly higher speeds. PTFE seals can reach 20+ m/s. The peripheral speed v = π × d × n / 60000 (m/s).

Qanday muhr materialini tanlash kerak?

NBR (Nitrile): -40 to +100°C, mineral oil, general purpose. FKM (Viton): -25 to +200°C, synthetic oils, fuels, chemicals. PTFE: -60 to +200°C, aggressive chemicals, high speed. EPDM: water, steam, brake fluid (not oil-compatible).

Labli muhrlar bosimga chidashi mumkinmi?

Standart labli muhrlar nolga yaqin bosim (suyuqlik sochilishi bilan moylanish) uchun mo'ljallangan. 0,05 MPa (0,5 bar) gacha bo'lgan bosimda standart muhr ishlashi mumkin. 0,03–0,05 MPa dan yuqori bosimda tayanch halqali bosimga chidamli muhr yoki mexanik muhrlash tizimidan foydalaning.

Muhandislik uchun bepul vosita

Val zichlagichini tanlash — ISO 6194

ISO 6194 bo'yicha radial labli muhrlarni tanlang. Val diametrini, aylanish tezligini va muhitni kiriting — tavsiya etilgan muhr turi, o'lchamlari va materiali ko'rsatiladi.

ISO 6194Radial Labli Muhrlard × D × b

Recommendation

Recommended Seal (d × D × b)

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Material

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Periferik tezlik

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Speed Check

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Seal Type

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Periferik tezlik

Standart NBR labi zıvınları: maks. ~12 m/s. FKM: ~14 m/s. PTFE: ~20 m/s.

Material tanlash bo'yicha qo'llanma

NBR (Nitrile): -40 dan +100°C gacha. Mineral yog', yog'lash moyi. Umumiy maqsadli. Eng keng tarqalgan.

FKM (Viton): -25 dan +200°C gacha. Sintetik yog', yonilg'i, yuqori harorat. Premium tanlov.

PTFE: -60 dan +200°C gacha. Agressiv kimyoviy moddalar, yuqori tezlik, quruq ishlash.

EPDM: -50 dan +150°C gacha. Suv, bug', tormoz suyuqligi. Mineral yog' bilan MOS EMAS.

Val Muhrini Tanlash — ISO 6194 | Bepul Onlayn Vosita

Published by Nikolai Shelkovenko on Fevral 15, 2026 Fevral 15, 2026

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