sun planet gear

Our gear category supplies the quality parts to suit your vehicle and its own desired performance. Searching or shop for bands and pinions, aspect gears, planetary ring and sunlight gears, and differential pinion gears, plus spur and, high performance gears. AxleTech offers individual carrier components, such as for example gear sets, to address specific servicing requirements. Our durable gears are legitimate, OE-quality parts created to specs for demanding duty. Shop now to have confidence in the part you use for your repair.

We stock the product quality Ever-Power gears that meet 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 products from Ever-Power. They are vital parts in your stock of carrier components. At Ever-Power, you will find rings and pinions with OE quality that are built for durability and reliability. Each arranged is manufactured to support your vehicle’s optimized performance. The ring and pinions are mated during manufacturing and temperature treated for the precise hardness the application demands. These essential pieces of hardware keep your vehicles moving. Whenever a repair or substitute is required, you can look to Ever-power to supply the precise component required. The ring and pinions we stock are designed with the components and procedures to meet OE specifications. As authentic replacement gears, they’re manufactured to the same standards as the manufacturer’s parts. Compromising a part could mean compromising performance. And there’s no need to do 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 fixed position one.
The word ”There’s nothing new beneath the sun’ certainly pertains to planetary reducers. And, while floating sunlight gears have been around a long time, some engineers might not be aware of the huge benefits this unusual gear design can offer.
Traditionally, planetary reducers possess used a set sun gear, where the centre gear is mounted on or machined in to the shaft. When this set sun gear revolves, it turns the planet gears to create movement and/or power. Ever-Power new planetary reducers, however, are employing a floating sun gear rather than a set 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’s perfectly centred among the three sun planet gear planets in order to provide equal load posting among itself and all three planets.’
Because of normal manufacturing tolerances nevertheless, a sun gear which is securely fixed on a shaft will intermittently have more load on one planet equipment than on another equipment Hulstein explained. ‘By enabling the sun equipment to float, it centres itself among the three planets and produces continuous, equal load sharing.’
Equal load sharing is just one of the benefits of this design. The floating sun gear provides ‘accurate involute action,’ according to Hulstein. Accurate involute action happens when the rolling motion between the mating gears is really as complete as possible. The benefit of this full meshing of gears can be longer reducer life, since less internal gear slippage means fewer broken gear teeth.
That does mean lower noise levels. When sunlight gear is permitted to completely roll into the world gears, there’s less ‘rattling’ as one’s teeth mesh. In effect, the Ever-Power product offers ‘designed out’ the gear mesh noise by allowing the sun gear to float into place.
So why use a set sun gear at almost all? ‘Fixed sun gears tend to be used in accurate servo applications,’ Greg Pennings, Ever-Power Consumer 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 concerned with low backlash and more interested with higher torque and/or lower noise applications.
Our planetary reducers with floating sunlight gears were made to compete with parallel shaft reducers, where backlash was less critical,’ Pennings said.
Utilizing the floating sun gear concept, the Ever-Power planetary reducers can easily 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 demonstrated in the figures above. The figure at left shows a three-dimensional view while the figure at correct provides a cross-section. In this geartrain, inputs and output can be taken from the carrier, band and sunlight gears, and only the earth experiences epicyclic motion. This is the most common kind of planetary gearset (with the exception of the differential) and it finds application in swiftness reducers and automatic transmissions. If you take aside a cordless drill, you will most 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 demonstrated above has two sun gears, and both planet gears (the yellow gears) rotate as a single unit. The sun gears (green and brownish) can rotate independently of one another. The inputs and result can be selected from either sun gear and/or the carrier. High speed reductions can be achieved with this unit, nonetheless it can suffer from low efficiency if not really designed correctly.
Reddish colored sun input – purple sun fixed
Purple sun input – red sun fixed
The animations above show the ‘two suns – two planets’ gearset with one sunlight as input and the other sun fixed. Remember that the carrier rotates clockwise in the computer animation at left and counterclockwise in the animation at right – even though the sun rotates counterclockwise in both situations.
The Differential
The gearset shown above is different from the preceding gearsets in that it is made up of miter gears instead of spur (or helical) gears. The ‘sun’ gears are the ones that do not undergo the epicyclic motion experienced by the planet. And the differential can be used to gauge the difference in quickness between two shafts for the purpose of synchronization. Furthermore, the differential is frequently used in automotive drive trains to conquer the difference in wheel acceleration when a car goes around a corner.