sun planet gear

Our gear category offers the quality parts to suit your vehicle and its desired performance. You can search or shop for rings and pinions, part gears, planetary ring and sun gears, and differential pinion gears, plus spur and, high performance gears. AxleTech offers individual carrier parts, such as for example gear sets, to address specific servicing requirements. Our durable gears are authentic, OE-quality parts built to specifications for demanding duty. Store now to trust the part you utilize for your repair.

We stock the product quality Ever-Power gears that meet up with the needs of a variety of commercial, commercial and military applications, both off-highway and on-highway. Our Gears inventory features the band and pinion products from Ever-Power. They are vital parts within our stock of carrier elements. At Ever-Power, you will discover bands and pinions with OE quality that are built for durability and reliability. Each arranged is manufactured to aid your vehicle’s optimized performance. The band and pinions are mated during manufacturing and heat treated for the specific hardness the application demands. These important pieces of equipment keep your vehicles moving. Whenever a repair or replacement is required, you can look to Ever-power to supply the precise component required. The ring and pinions we stock are built with the components and processes to meet up OE specifications. As authentic replacement gears, they’re manufactured to the same specifications as the manufacturer’s parts. Compromising a component could mean compromising overall performance. And there’s you don’t need to perform that when you can look to our intensive gear inventory.
Gear Sets for Industrial Vehicles

Ever-Power new planetary reducers hire a floating sun equipment rather than a set position one.
The saying ”There’s nothing new beneath the sun’ certainly pertains to planetary reducers. And, while floating sun gears have already been around a long time, some engineers may not be aware of the benefits this unusual gear design can offer.
Traditionally, planetary reducers possess used a fixed sun gear, where the centre gear is attached to or machined into 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 gear rather than a fixed position sun gear.
Why a floating sun equipment? ‘In the planetary idea, the sun may be the driver, or pinion, in the apparatus set,’Ever-Power style engineer Scott Hulstein stated. ‘Because the sun gear is in continuous contact with the planets, it’s important that it is flawlessly centred among the three planets to be able 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 using one planet equipment than on another gear Hulstein explained. ‘By permitting the sun equipment to float, it centres itself among the three planets and produces constant, equal load sharing.’
Equal load posting is merely one of the advantages of this design. The floating sun gear provides ‘accurate involute action,’ according to Hulstein. True involute action takes place when the rolling motion between your mating gears is really as complete as feasible. The benefit of this finish meshing of gears is certainly longer reducer lifestyle, since less internal gear slippage means fewer broken gear teeth.
That also means lower noise amounts. When the sun gear is allowed to completely roll into the planet gears, there’s much less ‘rattling’ as one’s teeth mesh. In effect, the Ever-Power product has ‘designed out’ the gear mesh sound by allowing sunlight gear to float into place.
So why use a set sun gear at almost all? ‘Fixed sun gears are often used in accurate servo applications,’ Greg Pennings, Ever-Power Client Advocate, explained. ‘A set sun gear is necessary when exact positioning and low backlash are an integral part of the application.’ Ever-Power engineers, nevertheless, were less worried about low backlash and more interested with higher sun planet gear torque and/or lower sound applications.
Our planetary reducers with floating sunlight gears were made 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 are able to exceed the torque ratings of similar sized and larger sized parallel shaft reducers, yet maintain a lesser noise levels.
Sun, Ring and Planet
The most basic type of planetary gearset is proven in the figures above. The figure at left shows a three-dimensional look at as the figure at right provides a cross-section. In this geartrain, inputs and output can be extracted from the carrier, ring and sunlight gears, and just the planet experiences epicyclic motion. This is the the majority of common type of planetary gearset (apart from the differential) and it finds application in acceleration reducers and automated transmissions. If you take aside 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 shown above has two sunlight gears, and the two planet gears (the yellow gears) rotate as a single unit. Sunlight gears (green and brownish) can rotate independently of 1 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 colored 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 left and counterclockwise in the animation at right – despite the fact that the sun rotates counterclockwise in both cases.
The Differential
The gearset proven above is different from the preceding gearsets in that it is made up of miter gears rather than 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 used to gauge the difference in speed between two shafts for the purpose of synchronization. Furthermore, the differential is often used in automotive drive trains to conquer the difference in wheel velocity when a car goes around a corner.


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