sun planet gear

Our gear category supplies the quality parts to suit your vehicle and its own desired performance. You can search or shop for rings and pinions, side gears, planetary ring and sun gears, and differential pinion gears, plus spur and, high performance gears. AxleTech offers individual carrier parts, such as gear sets, to address specific servicing needs. Our durable gears are authentic, OE-quality parts created to specs for demanding duty. Shop now to trust the part you use for your repair.

We stock the product 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 components. At Ever-Power, you can get bands and pinions with OE quality that are built for sturdiness and reliability. Each established is manufactured to aid your vehicle’s optimized performance. The band and pinions are mated during manufacturing and warmth treated for the precise hardness your application demands. These important pieces of hardware keep your automobiles moving. Whenever a repair or sun planet gear replacement is necessary, you can turn to Ever-power to supply the exact component required. The ring and pinions we share are built with the materials and procedures to meet OE specifications. As real replacement gears, they’re manufactured to the same standards as the manufacturer’s parts. Compromising a part could mean compromising overall performance. And there’s you don’t need to do that when you’re able to look to our considerable gear inventory.
Gear Sets for Industrial Vehicles

Ever-Power new planetary reducers hire a floating sun equipment rather than a fixed position one.
The word ”There’s nothing new under the sun’ certainly applies to planetary reducers. And, while floating sun gears have been around quite a while, some engineers may not end up being aware of the benefits this unusual gear design can offer.
Traditionally, planetary reducers have used a fixed sun gear, where the centre gear is attached to or machined into the shaft. When this set sun gear revolves, it turns the planet gears to create motion and/or power. Ever-Power new planetary reducers, however, are having a floating sun gear rather than a set position sun gear.
Why a floating sunlight gear? ‘In the planetary idea, the sun is the driver, or pinion, in the apparatus set,’Ever-Power style engineer Scott Hulstein said. ‘Because the sun gear is in constant contact with the planets, it’s important that it is flawlessly 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 equipment which is securely set on a shaft will intermittently have more load using one planet equipment than on another equipment Hulstein explained. ‘By allowing the sun gear to float, it centres itself among the three planets and generates continuous, equal load sharing.’
Equal load sharing is merely one of the benefits of this design. The floating sunlight gear provides ‘accurate involute action,’ according to Hulstein. Accurate involute action happens when the rolling motion between your mating gears is as complete as possible. The benefit of this comprehensive meshing of gears is longer reducer life, since less internal gear slippage means fewer broken gear teeth.
That does mean lower noise levels. When sunlight gear is allowed to completely roll into the world gears, there’s less ‘rattling’ as the teeth mesh. In place, the Ever-Power product offers ‘designed out’ the gear mesh sound by allowing sunlight gear to float into place.
So why make use of a fixed sun gear at all? ‘Fixed sun gears tend to be used in true servo applications,’ Greg Pennings, Ever-Power Consumer Advocate, explained. ‘A set sun gear is necessary when precise positioning and low backlash are an integral part of the software.’ Ever-Power engineers, nevertheless, 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 made to contend with parallel shaft reducers, where backlash was less critical,’ Pennings said.
By using 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 shown in the figures above. The figure at still left shows a three-dimensional view while the figure at right offers a cross-section. In this geartrain, inputs and result can be extracted from the carrier, band and sun gears, and only the planet experiences epicyclic motion. That is the many common kind of planetary gearset (apart from the differential) and it discovers application in rate reducers and automatic transmissions. Invest the 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 sunlight gears, and both planet gears (the yellow gears) rotate as a single unit. The sun gears (green and brown) can rotate independently of one another. The inputs and result can be chosen from either sun gear and/or the carrier. High speed reductions may be accomplished with this unit, but it can have problems with low efficiency if not really designed correctly.
Crimson sun input – purple sun fixed
Purple sun input – reddish sun fixed
The animations above show the ‘two suns – two planets’ gearset with one sun as input and the other sunlight fixed. Note that the carrier rotates clockwise in the animation at still left and counterclockwise in the animation at right – even though the sun rotates counterclockwise in both instances.
The Differential
The gearset shown above differs from the preceding gearsets for the reason that it is made up of miter gears rather than spur (or helical) gears. The ‘sun’ gears are the ones that do not undergo the epicyclic movement experienced by the planet. And the differential can be used to measure the difference in rate between two shafts for the purpose of synchronization. Furthermore, the differential is often used in automotive drive trains to overcome the difference in wheel swiftness when a car encircles a corner.