Our gear category offers the quality parts to suit your vehicle and its desired performance. You can search or shop for rings and pinions, side gears, planetary band and sunlight gears, and differential pinion gears, plus spur and, powerful gears. AxleTech offers person carrier elements, such as for example gear sets, to address specific servicing needs. Our heavy duty gears are genuine, OE-quality parts created to specs for demanding duty. Store now to have confidence in the part you use for your repair.
We stock the 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 band and pinion products from Ever-Power. They are essential parts in your stock of carrier parts. At Ever-Power, you will find bands and pinions with OE quality that are built for sturdiness and reliability. Each arranged is manufactured to aid your vehicle’s optimized performance. The band and pinions are mated during production and heat treated for the precise hardness your application demands. These essential pieces of equipment keep your automobiles moving. When a repair or substitute is necessary, you can look to Ever-power to provide the specific component sun planet gear required. The band and pinions we share are built with the components and processes to meet OE specifications. As legitimate replacement gears, they’re produced to the same criteria as the manufacturer’s parts. Compromising a component could mean compromising efficiency. And there’s no need to perform that when you’re able to look to our comprehensive gear inventory.
Gear Sets for Commercial Vehicles
Ever-Power new planetary reducers hire a floating sun equipment rather than a fixed position one.
The saying ”There’s nothing new beneath the sun’ certainly applies 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 have used a set sun gear, where in fact the centre gear is mounted on or machined in to the shaft. When this set sun equipment revolves, it turns the planet gears to create motion 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 sunlight equipment? ‘In the planetary concept, the sun is the driver, or pinion, in the gear set,’Ever-Power design engineer Scott Hulstein said. ‘Because the sun gear is in constant contact with the planets, it’s important that it’s perfectly centred among the three planets to be able to provide equal load posting among itself and all three planets.’
Due to normal manufacturing tolerances however, a sun equipment which is securely fixed upon a shaft will intermittently have more load using one planet gear than on another equipment Hulstein explained. ‘By allowing the sun gear to float, it centres itself among the three planets and produces constant, 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. Accurate involute action occurs when the rolling motion between the mating gears is really as 
complete as feasible. The benefit of this complete meshing of gears can be longer reducer existence, since less internal gear slippage means fewer broken gear teeth.
That does mean lower noise amounts. When sunlight gear is allowed to completely roll into the planet gears, there’s less ‘rattling’ as the teeth mesh. In effect, the Ever-Power product has ‘designed out’ the gear mesh sound by allowing the sun gear to float into place.
So why use a fixed sun gear at almost all? ‘Fixed sun gears are often used in accurate servo applications,’ Greg Pennings, Ever-Power Customer Advocate, explained. ‘A set sun gear is essential when precise positioning and low backlash are an integral part of the program.’ Ever-Power engineers, however, 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 designed to compete with parallel shaft reducers, where backlash was less critical,’ Pennings said.
By using the floating sun gear concept, the Ever-Power planetary reducers have the ability to exceed the torque rankings of similar sized and bigger sized parallel shaft reducers, yet maintain a lesser noise levels.
Sun, Ring and Planet
The most basic kind of planetary gearset is proven in the figures above. The figure at left shows a three-dimensional look at while the figure at right provides a cross-section. In this geartrain, inputs and result can be taken from the carrier, band and sunlight gears, and just the earth experiences epicyclic motion. That is the most common type of planetary gearset (with the exception of the differential) and it discovers application in swiftness reducers and automatic transmissions. If you take apart a cordless drill, you will most probably find this kind 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 sun 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 chosen from either sun gear and/or the carrier. Very high speed reductions can be achieved with this unit, nonetheless it can suffer from low efficiency if not designed correctly.
Reddish sun input – purple sun fixed
Purple sun input – reddish colored 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 animation at left and counterclockwise in the computer animation at right – even though the sun rotates counterclockwise in both situations.
The Differential
The gearset proven above is different from the preceding gearsets for the reason 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 acceleration between two shafts for the intended purpose of synchronization. Furthermore, the differential is often used in automotive drive trains to get over the difference in wheel acceleration when a car encircles a corner.