sun planet gear

Our gear category offers the quality parts to fit your vehicle and its desired performance. You can search or shop for rings and pinions, part gears, planetary band and sun gears, and differential pinion gears, plus spur and, powerful gears. AxleTech offers individual carrier components, such as for example gear sets, to address specific servicing needs. Our durable gears are authentic, OE-quality parts created 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 the needs of a range of commercial, industrial and military applications, both off-highway and on-highway. Our Gears inventory features the band and pinion product line from Ever-Power. They are essential parts in your stock of carrier elements. At Ever-Power, you will find bands and pinions with OE quality that are designed for durability and reliability. Each established is manufactured to aid your vehicle’s optimized performance. The band and pinions are mated during production and temperature treated for the specific hardness your application demands. These important pieces of equipment keep your vehicles moving. When a repair or substitute is required, you can look to Ever-power to supply the exact component required. The band and pinions we stock are built with the components and procedures to meet up OE specifications. As real replacement gears, they’re produced to the same criteria as the manufacturer’s parts. Compromising a part could mean compromising efficiency. And there’s no need to do that when you can look to our considerable gear inventory.
Gear Sets for Industrial Vehicles

Ever-Power new planetary reducers employ a sun planet gear floating sun equipment rather than a set position one.
The word ”There’s nothing new beneath the sun’ certainly applies to planetary reducers. And, while floating sunlight gears have already been around quite a while, some engineers may not become aware of the huge benefits this unusual gear style can offer.
Traditionally, planetary reducers possess used a set sun gear, where in fact the centre gear is attached to or machined in to the shaft. When this fixed sun gear revolves, it turns the earth gears to create movement and/or power. Ever-Power new planetary reducers, however, are employing a floating sun equipment rather than a set position sun gear.
Why a floating sun 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 connection with the planets, it’s important that it’s properly centred among the three planets to be able to provide equal load posting among itself and all three planets.’
Due to normal manufacturing tolerances nevertheless, a sun equipment which is securely set on a shaft will intermittently have 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 generates 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. True involute action happens when the rolling motion between the mating gears is really as complete as feasible. The benefit of this complete meshing of gears is usually longer reducer life, since less internal gear slippage means fewer broken gear teeth.
That does mean lower noise amounts. When the sun gear is permitted to completely roll in to the world gears, there’s less ‘rattling’ as the teeth mesh. In effect, the Ever-Power product has ‘designed out’ the apparatus mesh sound by allowing sunlight gear to float into place.
So why use a fixed sun gear at most? ‘Fixed sun gears are often used in true servo applications,’ Greg Pennings, Ever-Power Client Advocate, explained. ‘A fixed sun gear is necessary when exact positioning and low backlash are an intrinsic part of the app.’ Ever-Power engineers, however, were less worried about low backlash and more interested with higher torque and/or lower sound applications.
Our planetary reducers with floating sun 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 have the ability to exceed the torque ratings of similar sized and larger sized parallel shaft reducers, and yet maintain a lesser noise levels.
Sun, Ring and Planet
The most basic type of planetary gearset is demonstrated in the figures above. The figure at remaining shows a three-dimensional look at as the figure at correct offers a cross-section. In this geartrain, inputs and output can be taken from the carrier, band and sunlight gears, and just the planet experiences epicyclic motion. This is the many common kind of planetary gearset (with the exception of the differential) and it finds application in quickness reducers and automatic transmissions. Invest the apart a cordless drill, you’ll probably find this type of planetary gearset right 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 the two planet gears (the yellow gears) rotate as a single unit. Sunlight gears (green and brown) can rotate independently of one another. The inputs and result can be selected 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 really designed correctly.
Reddish 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. Note that the carrier rotates clockwise in the computer animation at still left and counterclockwise in the animation at right – despite the fact that the sun rotates counterclockwise in both cases.
The Differential
The gearset demonstrated above differs 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 earth. And the differential can be used to measure the difference in velocity between two shafts for the purpose of synchronization. Furthermore, the differential is frequently used in auto drive trains to get over the difference in wheel quickness when a car encircles a corner.