sun planet gear

Our gear category offers the quality parts to fit your vehicle and its desired performance. Searching or shop for bands and pinions, side gears, planetary ring and sun gears, and differential pinion gears, plus spur and, powerful gears. AxleTech offers person carrier components, such as gear sets, to handle specific servicing needs. Our heavy duty gears are authentic, OE-quality parts built to specs for demanding duty. Store now to have confidence in the part you utilize for your repair.

We stock the quality Ever-Power gears that meet up with the needs of a range of commercial, commercial and military applications, both off-highway and on-highway. Our Gears inventory features the ring and pinion product line from Ever-Power. They are essential parts in your stock of carrier elements. At Ever-Power, you can find rings and pinions with OE quality that are built for strength and reliability. Each set is manufactured to support your vehicle’s optimized performance. The ring and pinions are mated during manufacturing and high temperature treated for the precise hardness the application demands. These important pieces of equipment keep your automobiles moving. When a repair or replacement is required, you can look to Ever-power to provide the exact component required. The band and pinions we share are designed with the components and processes to meet OE specifications. As genuine replacement gears, they’re produced to the same specifications as the manufacturer’s parts. Compromising a component could mean compromising functionality. And there’s you don’t need to perform that when you’re able to look to our extensive gear inventory.
Gear Sets for Commercial Vehicles

Ever-Power new planetary reducers hire a floating sun gear rather than a set position one.
The saying ”There’s nothing new under the sun’ certainly pertains to planetary reducers. And, while floating sun gears have already been around a long time, some engineers may not become aware of the huge benefits this unusual gear design can offer.
Traditionally, planetary reducers possess used a fixed sun gear, where in fact the centre gear is attached to or machined in to the shaft. When this fixed sun equipment revolves, it turns the planet gears to create movement and/or power. Ever-Power new planetary reducers, however, are having a floating sun equipment rather than a set position sun gear.
Why a floating sun gear? ‘In the planetary concept, the sun is the driver, or pinion, in the gear set,’Ever-Power style engineer Scott Hulstein said. ‘Because the sun gear is in continuous connection with the planets, it’s important that it’s perfectly centred among the three planets in order to provide equal load sharing among itself and all three planets.’
Due to normal manufacturing tolerances nevertheless, a sun gear which is securely set upon a shaft will intermittently have more load on one planet equipment than on another gear Hulstein explained. ‘By allowing the sun equipment to float, it centres itself among the three planets and generates constant, equal load sharing.’
Equal load sharing is merely one of the advantages of this design. The floating sun gear provides ‘accurate involute actions,’ according to Hulstein. True involute action takes place when the rolling motion between your mating gears is as complete as feasible. The benefit of this full meshing of gears is usually longer reducer existence, since less internal gear slippage means fewer damaged gear teeth.
That also means lower noise amounts. When sunlight gear is permitted to completely roll in to the planet gears, there’s much less ‘rattling’ as one’s teeth mesh. In place, the Ever-Power product provides ‘designed out’ the gear mesh noise by allowing sunlight equipment to float into place.
So why use a set sun gear at every? ‘Fixed sun gears are often used in accurate servo applications,’ Greg Pennings, Ever-Power Client Advocate, explained. ‘A fixed sun gear is necessary when precise positioning and low backlash are an integral part of the application.’ Ever-Power engineers, however, were less concerned with low backlash and more interested with higher torque and/or lower sound applications.
Our planetary reducers with floating sun gears were designed to contend with parallel shaft reducers, where backlash was less critical,’ Pennings said.
By using the floating sun gear concept, the Ever-Power planetary reducers can exceed the torque rankings of similar sized and larger sized parallel shaft reducers, yet maintain a lesser noise levels.
Sun, Ring and Planet
The most basic kind of planetary gearset is shown in the figures above. The figure at still left shows a three-dimensional look at while the figure at correct offers a cross-section. In this geartrain, inputs and output can be taken from the carrier, ring and sun gears, and just the earth experiences epicyclic motion. This is the many common type of planetary gearset (apart from the differential) and it finds application in rate reducers and automated transmissions. Invest the apart a cordless drill, you’ll probably find this kind of planetary gearset directly behind the drill chuck.
Two Suns – Two Planets gearset
sun planet gear Cross-sectional view
Two Suns, Two Planets
The gearset shown above has two sunlight gears, and both planet gears (the yellow gears) rotate as a single unit. The sun gears (green and brown) can rotate independently of 1 another. The inputs and result 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.
Crimson sun input – purple sun fixed
Purple sun input – crimson sun fixed
The animations above show the ‘two suns – two planets’ gearset with one sun as input and the other sun fixed. Note that the carrier rotates clockwise in the computer animation at still left and counterclockwise in the computer animation at right – even though sunlight rotates counterclockwise in both instances.
The Differential
The gearset demonstrated above differs from the preceding gearsets in that it is made up of miter gears rather than spur (or helical) gears. The ‘sun’ gears are the ones that do not go through the epicyclic movement experienced by the earth. And the differential can be used to gauge the difference in velocity between two shafts for the purpose of synchronization. Furthermore, the differential is frequently used in automotive drive trains to get over the difference in wheel swiftness when a car encircles a corner.


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