Ano ang langis ng gear? Ang langis ng gear na ginagamit sa mga ordinaryong pampasaherong sasakyan ay karaniwang makikita sa mga manual transmission, dry double clutch transmission, at mga differential.
Tandaan na kahit na ang langis ng gear ay medyo katulad ng langis ng paghahatid, hindi ito magagamit sa pangkalahatan. Ang dalawang langis ay hindi pareho.
Para sa karamihan ng mga may-ari ng kotse, ang langis ng gear ay hindi kailangang palitan sa panahon ng pagpapanatili.
Sa madaling salita, ang gear oil ng transmission at ang gear oil ng differential ay karaniwang walang maintenance para sa karamihan ng mga modelo.
Sa ilalim lamang ng mga espesyal na pangyayari, tulad ng pagtagas ng langis o pagkasira ng makina, kailangang palitan ang langis ng gear; Sa madaling salita, ang langis ng gear ay kailangang palitan at mapanatili nang regular para sa ilang mga espesyal na modelo na may mataas na intensity ng operasyon.
Ang langis ng gear ay gumaganap ng hindi gaanong mahalagang papel sa mga kotse kaysa sa langis.
Upang pumili ng langis ng gear, kailangan mong makabisado ang dalawang mga parameter, ang isa ay ang antas ng kalidad, ang isa ay ang antas ng lagkit.
Tulad ng langis ng makina, ang langis ng gear ay nahahati din sa langis ng mineral, semi synthetic na langis at full synthetic na langis. Dahil ang langis ng gear ay napakadalas na pinapalitan at ang halaga ay mas mababa kaysa sa langis ng makina, inirerekumenda na gumamit ng full synthetic na langis nang direkta kung ito ay papalitan.
Ang unang parameter ay ang antas ng kalidad.
Like engine oil, the internationally accepted quality grade standard for gear oil is also formulated by API, the American Petroleum Institute. For gear oil, API is divided into 6 grades, from GL-1 to GL-6.
The difference between different grades is mainly determined by the type and working condition of the gear, and different gear types and working conditions have different requirements for the thermal stability and oxidation resistance of the oil film.
For mid to low-end sedans and small buses, choose GL-4; For high-end cars, luxury cars, performance cars, and some SUVs with good off-road performance, choose the GL-5. As for the GL-6, if you're not driving a racing car, there's no need to consider it at all.
The second parameter: viscosity grade.
The selection of viscosity is mainly based on the ambient temperature. Like engine oil, the viscosity grade of gear oil, the internationally accepted classification standard, is also formulated by SAE, the Society of Automotive Engineers.
The viscosity grade of gear oil is divided into 7 grades, namely 75W, 75W/90, 80W/90, 85W/90, 90, 85W/140 and 140. The letter W refers to the viscosity of gear oil at low temperature.
For example, 75W/90 means that this kind of gear oil can withstand the high temperature of minus 40 degrees Celsius and still maintain good fluidity.
The latter 90 represents the viscosity of gear oil at high temperature. In these 7 levels, the following set of numbers only has three situations, none, either 90, or 140.
Without the following set of numbers, it means that the high-temperature performance is poor and only suitable for low-temperature conditions; With this set of numbers, 140 is more suitable for high-temperature working conditions than 90.
In other words, if there are 90 and 140 numbers, the viscosity of gear oil at high temperature is relatively large, and the strength and toughness of the oil film are good.
01 Precautions for selecting gear oil
1. Taboos for use of gear oil
During use, it is strictly prohibited to add diesel oil to gear oil for dilution, or bake the rear axle and transmission due to the impact on winter starting, so as to avoid serious deterioration of gear oil. If this happens, the low-viscosity multistage gear oil should be used.
2. Timely addition and replacement
During the operation of the vehicle, the gear oil of each assembly and component will consume a part due to local leakage, evaporation, or extrusion, and will deteriorate over a long period of time, so it is necessary to add it timely. The added gear oil must meet the requirements of the original vehicle.
3. Timely oil change
The oil should be replaced with new oil according to the specified oil change indicators. If there is no oil quality analysis instrument, the oil can be replaced according to the specified deadline. When changing the oil, the old oil should be drained while it is hot, and the gear and gearbox should be cleaned before adding new oil. When refueling, water and impurities should be prevented from mixing in.
4. Rational use of gear oil
Gear oil has a long service life. If single-stage oil is used, different viscosity grades should be used during seasonal maintenance. If the discharged old oil does not reach the oil change deadline, it can be used for another oil change. Old oil should be properly stored and strictly protected from moisture, mechanical impurities, and waste oil pollution.
02 Replacement steps of automobile gear oil
Before changing the gear oil, warm up the car to keep it at normal temperature.
Step 1: Remove the gear
We should first locate the position of the odometer cable on the gearbox, then carefully remove the odometer cable shaft cover, and slowly twist the plastic small gear.
Step 2: drain the old gear oil
Remove the transmission gear oil drain plug, drain the old gear oil, and then tighten the drain plug. Be sure to drain the old engine oil inside to prevent polluting the newly added gear oil.
Step 3: Add gear oil
Then add gear oil from the odometer axis hole. When adding, pay attention to the position of gear oil oil level so as not to exceed the F line. At the same time, try to be careful to prevent oil from spilling outside.
Step 4: Reinstall
Carefully install the removed gears, preferably according to the operating instructions, and there should be no shortage of spare parts installed.
In a word, the selection of gear oil can generally be based on the following reference standards, such as the driving axle type, working conditions, load and speed to determine the quality level of the oil used and other factors, of course, the lowest ambient operating temperature and transmission equipment can also be used? The highest operating temperature is used to determine the viscosity level of the oil.
More about VAFEM Pulley and tensioner bearings:
VAFEM Tensioner pulleys provide precise guidance and constant belt tension in the belt drive. They can either be mounted rigidly or combined with the tensioning elements to belt tensioners. Tensioner pulleys increase the wrap angle on belt drives and thereby transmit higher performance. They enable a change in the rotational direction of the connected aggregates. In combination with belt tensioners, they also compensate for operational belt stretching.
Various materials are used in the production of belt tensioners, depending on the technical requirements, for example deep-drawn sheet steel, turned bar, cast steel or Polyamide 66 with glass fibre content. VAFEM Tensioner pulleys Spare Parts brand are designed for a maximum temperature of up to 120°C and 6 000 RPM.
Tinitiyak ng precision-machined contact surface ng belt tensioner ang pinakamainam na pag-install ng drive belt, mababang pagkasira at minimal na ingay sa pagpapatakbo.
Konstruksyon ng mga tensioner pulley
1.Pulley
2.Takip na plato
3. manggas
4.Bola tindig
5.Seal ring
2023-04-28