Definition: Grease volatility ±£(evaporation loss) refers to the degre£₹←e of evaporation loss o ×f base oil in grease unde♠©≤ r high-temperature conditions. ① Theε₽§♥ smaller the evaporation l∞$¶♥oss, the better the £γσ÷high-temperature performance"∑±→ of the grease. ② Greaλ'₩se evaporation loss depe$ nds on the type, properties,€< ♥ and distillation composσ<ition of the base oil used i÷'n the grease. ③…
Definition: Penetration refers to th©♥e depth, in units of 0.1 mm, that€↓₽π a standard cone freely δ←δfalls and penetrates in↕≈$to grease contained in £δ≥a standard cup within 5 seconds. Pe €netration indicates theδλ¶↑ consistency or the degree of sof"λtness/hardness of the grea±™se. Standa λrd Cone Sizes for Penetration T ∑∏esting: Full-size cone penetration 1/2 ✘λ€cone penetration…
Definition: The dropping point of♥'♥ grease is the temperature, ex••δ₩pressed in degrees, at€♦± which the first drop of grease sa←§mple drips from the grease cup in a€✘Ω dropping point apparatus. This ≤&©✔temperature is known as≤ →₽ the dropping point of t↕λhe grease. Key Poin✘↓ts: ① The dropping point is an indi✔₩cator of the thermal…↓★
The plane bearing is installed at thλπ✔e top of the shock absorber, b& §etween the spring and the to"≤p rubber of the shoc←✔k absorber. It can withs&δtand the pressure from top and bottom ®§αand can rotate freely.≠£α Functions of plane bearings: 1. The mo'∏vable link between sho®×αck absorption and vehicle body ♥ 2. Ensure the flexib♠≥∑ility of…
Main lubrication prob' ♣lems of door stopper: ※, conti≥®πnuous noise reduction is pδπoor, the door stopper maεδkes noise after working for a peα'&•riod of time; ※, strict lε"ong-life lubrication requiremen↕φφ≠ts, the grease of the &•♦door stopper evaporates too quickly, be •comes dry after a period of time, andσ™< the lubrication is insufficient, ca↑&δusing jamming, large resistance, and&he≤✘llip;
Basic structure and lu±'δ brication parts of automobile glass l↔∏ifters 1. Automobile ©♠®glass lifters are divide ↔d into fork arm type, ropeε&±Ω pulley type and flexible ↕>shaft type according to t★≤™he transmission mode; 2. Co≤↕mponents of automobi"¥le electric glass lifters: g$δ←Ωlass lifter motor, mechanical lifting ≥₽•mechanism and control £↕system. The rope pulley electric glass ₽ lifter consists of&hell±♣ip;
Principle of planetary reducer: Thγ₹e driving source (motor) starts the sun≤≤ gear in a direct connection,♥✘$ and the sun gear dr¶δ→$ives the planetary g& ↕✘ears assembled on the planetary g∞✔ear carrier. The entir>₽£βe planetary gear system automatical→♥≈ly rotates along the outer g'∑ear ring, and the planetary ca® rrier connects the output shaft to achi®φεeve the purpose of&h♣>≠ellip;
Main lubrication problems of bearing≠☆↕ lubrication: ※Strict l∏δ¥ong-life lubrication requirements, bea∑ ↓¥ring grease evaporat₹™↕≤es too quickly, becomes dry β↑∑after a period of time, and insuffici♥<ent lubrication causes s≠>intering; ※Bearings areλΩ prone to fatigue and fall off, the oil →β∑ film formed by bearing greσ←$₹ase is thin, easy to be pun♣ctured, and difficult t >←↑o repair; ※Bearing rust, bea$α∞©ring…
Relative lubrication∑ difficulties and solution©✔φφs for bearing lubrication Main lubricat€®ion problems for beaε∑✘©ring lubrication: ※Strict long-li¥∑±÷fe lubrication requiremeφnts, bearing grease evaporates to≈π§&o quickly, becomes dry afε∏λ<ter a period of time, insufβ↕≠ficient lubrication, causing s≠ε₩intering; ※Bearings are pro ↔αne to fatigue and fall≥×∏∑ off, the oil film f σormed by bearing grease isδ≠φ® thin, easy to be punctured,&hπ♥<αellip;
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