The base number is a measure of the amount of basic substance in the oil, always under the test conditions. It is sometimes used as a measure of lubricant degradation in service. However, any condemning limits must be empirically established. Detergency – ASTM D4951-09 Additive packages ...
How to hobbing the curve gear teeth musclePROBLEM TO BE SOLVED: To provide a method for hobbing a gear having a tooth trace center line forming a curved line on a pitch cylinder development.戴 玉堂有賀 幸則
Gear ratios are fundamental in understanding how gears work, with the ratio indicating how many times a gear has to turn for another gear to turn once; for instance, in a worm gear, a threaded shaft engaging the teeth on a gear can create a high gear ratio in a compact space. Planetary...
These gears are attached to the motor shaft and load shaft, and are coupled together by inter-meshed teeth. This produces a gear ratio, which is a direct measure of the ratio of motor shaft rotational speed to load shaft rotational speed. Use these tips to learn how to determine gear ...
The transmission has different gears— or speeds— to control how fast the wheels turn. As the wheels turn, they cause the car to move. To measure the speed of a car, one must be able to measure the rotational speed of either the wheels or the transmission and send that information to...
Finding the overall gear mesh stiffness also requires determining the contact ratio. In simple words, the contact ratio can be defined as a measure of the average number of teeth in contact during the period in which a tooth comes and goes out of contact with the mating gear. To show...
Manual transmissions in modern passenger cars use synchronizers, or synchros, to eliminate the need for double-clutching. A synchro's purpose is to allow the collar and the gear to make frictional contact before the dog teeth make contact. This lets the collar and the gear synchronize their spe...
Something to think about. L is for Lists To-do lists are a wonderful way to measure (and encourage) success. In fact,Sir Richard Bransonhas often spoken of his ‘love of writing lists’, and how he believes that, as a young man, they were incredibly useful in unleashing and guiding hi...
as is heating them. Race officials electronically measure the temperature of the runners before the race and compare it to a reference runner that has been exposed to air for at least an hour. A temperature difference of more than 4 degrees Celsius (7 degrees Fahrenheit) between the bob's ...
Measure gear backlash by mounting a dial indicator so it is similar to a pinion tooth profile; block the gear to prevent its rotation and rock the pinion through the backlash. To measure shaft endplay, mount a dial indicator at the end of a shaft and move the shaft in the axial ...