Definition: Penetration refers to the depth, in units of 0.1 mm, that a standard cone freely falls and penetrates into grease contained in a standard cup within 5 seconds. Penetration indicates the consistency or the degree of softness/hardness of the grease. Standard Cone Sizes for Penetration Testing: Full-size cone penetration 1/2 cone penetration…
Definition: The dropping point of grease is the temperature, expressed in degrees, at which the first drop of grease sample drips from the grease cup in a dropping point apparatus. This temperature is known as the dropping point of the grease. Key Points: ① The dropping point is an indicator of the thermal…
The plane bearing is installed at the top of the shock absorber, between the spring and the top rubber of the shock absorber. It can withstand the pressure from top and bottom and can rotate freely. Functions of plane bearings: 1. The movable link between shock absorption and vehicle body 2. Ensure the flexibility of…
Main lubrication problems of door stopper: ※, continuous noise reduction is poor, the door stopper makes noise after working for a period of time; ※, strict long-life lubrication requirements, the grease of the door stopper evaporates too quickly, becomes dry after a period of time, and the lubrication is insufficient, causing jamming, large resistance, and…
Basic structure and lubrication parts of automobile glass lifters 1. Automobile glass lifters are divided into fork arm type, rope pulley type and flexible shaft type according to the transmission mode; 2. Components of automobile electric glass lifters: glass lifter motor, mechanical lifting mechanism and control system. The rope pulley electric glass lifter consists of…
Principle of planetary reducer: The driving source (motor) starts the sun gear in a direct connection, and the sun gear drives the planetary gears assembled on the planetary gear carrier. The entire planetary gear system automatically rotates along the outer gear ring, and the planetary carrier connects the output shaft to achieve the purpose of…
Main lubrication problems of bearing lubrication: ※Strict long-life lubrication requirements, bearing grease evaporates too quickly, becomes dry after a period of time, and insufficient lubrication causes sintering; ※Bearings are prone to fatigue and fall off, the oil film formed by bearing grease is thin, easy to be punctured, and difficult to repair; ※Bearing rust, bearing…
Relative lubrication difficulties and solutions for bearing lubrication Main lubrication problems for bearing lubrication: ※Strict long-life lubrication requirements, bearing grease evaporates too quickly, becomes dry after a period of time, insufficient lubrication, causing sintering; ※Bearings are prone to fatigue and fall off, the oil film formed by bearing grease is thin, easy to be punctured,…
Grease is a semi-solid lubricating material made from mineral oil (or synthetic lubricating oil) and thickener. It has multiple functions such as lubrication, sealing, filling gaps and rust prevention. The following are the main factors affecting its timeliness: 1. Packaging factors Packaging has an important impact on the timeliness of grease: Packaging size: Due to…
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