sun planet gear

Our gear category supplies the quality parts to suit your vehicle and its desired performance. Searching or shop for bands and pinions, part gears, planetary band and sun gears, and differential pinion gears, plus spur and, high performance gears. AxleTech offers person carrier parts, such as for example gear sets, to handle specific servicing needs. Our durable gears are authentic, OE-quality parts built to specifications for demanding duty. Store now to have confidence in the part you use for your repair.

We stock the quality Ever-Power gears that meet the needs of a variety of commercial, industrial and military applications, both off-highway and on-highway. Our Gears inventory features the ring and pinion products from Ever-Power. They are essential parts within our stock of carrier parts. At Ever-Power, you will discover bands and pinions with OE quality that are designed for sturdiness and reliability. Each set is manufactured to support your vehicle’s optimal performance. The ring and pinions are mated during production and heat treated for the exact hardness the application demands. These essential pieces of hardware keep your vehicles moving. When a repair or replacement is required, you can turn to Ever-power to provide the specific component required. The band and pinions we stock are built with the materials and processes to meet OE specifications. As authentic replacement gears, they’re produced to the same requirements as the manufacturer’s parts. Compromising a part could mean compromising performance. And there’s no need to perform that when you’re able to look to our comprehensive gear inventory.
Gear Sets for Commercial Vehicles

Ever-Power new planetary reducers hire a floating sun equipment rather than a set position one.
The word ”There’s nothing new under the sun’ certainly applies to planetary reducers. And, while floating sunlight gears have already been around quite a while, some engineers may not be aware of the huge benefits this unusual gear style can offer.
Traditionally, planetary reducers possess used a set sun gear, where the centre gear is attached to or machined in to the shaft. When this set sun equipment revolves, it turns the earth gears to create motion and/or power. Ever-Power new planetary reducers, however, are having a floating sun gear rather than a fixed position sun gear.
Why a floating sun equipment? ‘In the planetary concept, the sun is the driver, or pinion, in the gear set,’Ever-Power design engineer Scott Hulstein stated. ‘Because the sun gear is in continuous contact with the planets, it’s important that it is properly centred among the three planets to be able to provide equal load sharing among itself and all three planets.’
Because of normal manufacturing tolerances nevertheless, a sun gear which is securely set upon a shaft will intermittently have significantly more load using one planet gear than on another gear Hulstein explained. ‘By permitting the sun gear to float, it centres itself among the three planets and produces continuous, equal load sharing.’
Equal load sharing is merely one of the benefits of this design. The floating sun gear provides ‘accurate involute actions,’ according to Hulstein. Accurate involute action happens when the rolling movement between your mating gears is as complete as feasible. The benefit of this complete meshing of gears is longer reducer life, since less internal gear slippage means fewer damaged gear teeth.
That also means lower noise levels. When the sun gear is allowed to completely roll into the world gears, there’s less ‘rattling’ as one’s teeth mesh. In place, the Ever-Power product offers ‘designed out’ the gear mesh noise by allowing sunlight equipment to float into place.
So why make use of a set sun gear at every? ‘Fixed sun gears tend to be used in true servo applications,’ Greg Pennings, Ever-Power Client sun planet gear Advocate, explained. ‘A fixed sun gear is necessary when precise positioning and low backlash are an intrinsic part of the app.’ Ever-Power engineers, nevertheless, were less worried about low backlash and more interested with higher torque and/or lower noise applications.
Our planetary reducers with floating sun gears were designed to compete with parallel shaft reducers, where backlash was less critical,’ Pennings said.
Utilizing the floating sun equipment concept, the Ever-Power planetary reducers are able to exceed the torque rankings of similar sized and bigger sized parallel shaft reducers, and yet maintain a lower noise levels.
Sun, Ring and Planet
The most basic kind of planetary gearset is proven in the figures above. The figure at remaining shows a three-dimensional look at as the figure at right provides a cross-section. In this geartrain, inputs and result can be taken from the carrier, band and sunlight gears, and just the planet experiences epicyclic motion. That is the many common kind of planetary gearset (with the exception of the differential) and it finds application in rate reducers and automated transmissions. If you take apart a cordless drill, you’ll probably find this type of planetary gearset directly behind the drill chuck.
Two Suns – Two Planets gearset
Cross-sectional view
Two Suns, Two Planets
The gearset proven above has two sun gears, and the two planet gears (the yellow gears) rotate as a single unit. Sunlight gears (green and dark brown) can rotate independently of one another. The inputs and output can be chosen from either sun gear and/or the carrier. Very high speed reductions may be accomplished with this unit, but it can have problems with low efficiency if not designed correctly.
Red sun input – purple sun fixed
Purple sun input – red sun fixed
The animations above show the ‘two suns – two planets’ gearset with one sun as input and the other sunlight fixed. Remember that the carrier rotates clockwise in the computer animation at remaining and counterclockwise in the computer animation at right – even though the sun rotates counterclockwise in both cases.
The Differential
The gearset shown above is different from the preceding gearsets for the reason that it is made up of miter gears instead of spur (or helical) gears. The ‘sun’ gears are those that do not undergo the epicyclic motion experienced by the planet. And the differential can be utilized to measure the difference in rate between two shafts for the intended purpose of synchronization. Furthermore, the differential is often used in auto drive trains to get over the difference in wheel velocity when a car goes around a corner.


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