Mountain Bike Upgrade Axle Rear Wheel Bearing Ball Sprocket Hub Modification Solid Shaft Upgrade Loose Ball Wheel Hub with Patent

To install the rear axle of a mountain bike, you first need to remove the flywheel. to remove the flywheel, you need to use a flywheel tool, and this is the one above! if you don’t have the tool, you need to get one! ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ The first one is the front axle size of m8. the axle length is 150 and can be equipped with 608 bearings. The second one is the front axle size of m10. the axle length is 150 and can be equipped with three types of bearings: 6900, 6000 and 6200. The third is the m10 rear axle size Shaft length 185 can be equipped with 6900, 6000 6200 three types of bearings The modified axle's threaded specification is 3/8*26 thread, which is a standard british standard whitworth (bsw) size. this is the common axle specification for most mountain bikes. Solid axle, crafted from 45-degree steel, ensuring ample material and superior hardness. built to withstand long-distance, heavy-duty riding without deformation! the perfect choice for serious modifications and upgrades. Notice ： Heads up, everyone! please note that the m10 rear axle has one side that's longer than the other. if you can't tell the difference, grab a ruler and measure them. the longer side goes on the side with the freewheel. make sure you don't put it in backwards, or you'll lose the bearing mounting position! 6200 inner diameter 10 outer diameter 30 thickness 9mm 6000 inner diameter 10 outer diameter 26 thickness 8mm 6900 inner diameter 10 outer diameter 22 thickness 6mm 608 inner diameter 8 outer diameter 22 thickness 7mm Non-standard 6000 inner diameter 10 outer diameter 25.4 thickness 8mm For bearings with other specifications, please contact customer service and specify your requirements in the order notes. Bearings come in different sizes, and the price varies accordingly! Let me mention a few key points: First off, this axle set isn't compatible with kaf's hubs. Secondly, before you buy a freewheel, you need to determine the inner diameter of your hub cup. not all bikes are compatible with all bearings! Thirdly, installing and adjusting the shims is absolutely crucial! the purpose of these shims is to match the axle spacing to the hub. this ensures that the bearings are properly supported during installation, which ultimately improves bearing lifespan and lubrication. The fourth point is to install a small dust cover on the flywheel side. a large dust cover will grind the flywheel! Fifth, after the shaft is installed, you should pinch the two bearings and dial the shaft to make sure there is no gap between the shaft and the two bearings! ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ The following price introduces the improvements in version 2.0 Xiaochun trading's patented product, It has been confirmed by the state intellectual property office as a patented product! Please do not imitate! Two major advantages of the upgraded version! The first point, The gasket is upgraded. the previous circlip is upgraded to a small flat ring, which can withstand greater pressure without deformation! ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ Secondly, a bearing dust cover is installed, which not only makes the appearance more beautiful, but also better protects the long life of the bearing!! Custom-designed bearing dust covers, paired with hex nuts, not only look great but also offer a perfect balance of rigidity and flexibility – tough yet gentle, gentle yet strong! this dust cover design is patent protected, so please do not copy! How it looks when installed on the shaft!! The above is the store's own giant wind speed ​​road bike rear axle modified to a bearing. not only does it look good, but the actual effect is ideal!! This is a mountain bike assembled by the store itself, which has also been successfully converted into a bearing hub. Still as handsome as ever. ============================================================================ Attention, Not all vehicles are modifiable! before you decide to make any modifications, please ensure you've accurately determined the dimensions of your vehicle. we've had instances where customers purchased without confirming the size, resulting in returns due to incompatibility. in these cases, the buyer is responsible for both the return shipping costs and the original shipping costs incurred by us. This flanged ball bowl is knocked out from the hub and is used to place the balls. you must first determine its inner diameter and hole diameter! ! There are two ways to modify it now. The first one, The original hub's inner diameter is just a tad over 26mm. for example, an inner diameter of 26.1mm is perfect. if it's too big, like 26.5mm, it won't fit properly, and the bearing will wobble! This type of hub cup allows you to install the bearing directly without removing the cup itself, and the performance is perfectly acceptable! The second type, If the original hub's inner diameter is less than 26mm, say around 25.7mm, then to make this modification, you'll need to remove the ball bearing cup and replace it with one of our nylon cups. this will yield better results. however, if the inner diameter after removing the cup is a very specific size that doesn't match our nylon cups, then that particular hub size won't be modifiable at this time. =========================================== Let's start by introducing the first modification method. The first step is to measure the size of your hub cup It is best to use calipers to measure the inner diameter of the hub bowl The flanged bowl is installed on the edge of the hub, and this flange will block it! A bowl without a flange is typically submerged within the hub shell. That is the inner diameter of this bowl. the most commonly used bearing now is 6000, and the outer diameter is 26. Therefore, the inner diameter of the bowl must be greater than 26, and the best size is around 26.1. if it is larger than 26.5, it will not be easy to install, the stability will be poor, and it will shake easily! If the front axle cup is smaller than the rear axle cup on some vehicles, we can use 6900 and 608 bearings with an outer diameter of 22mm. you need to ensure the inner diameter of the front axle cup is larger than 22mm for this to work; otherwise, it won't be compatible! If the front axle was originally an m8 axle, then we need to use an m8 axle + 608 bearing to modify it. If it was originally m10, you can use m10 shaft + 6900 bearing to modify it! If you don’t have a measuring tool to measure the inner diameter of the bowl, you can also find a bearing of the same model and try it to see if it can be installed! this is more convenient! This type of bowl can't be modified. the inner diameter is too small at 26mm, making it impossible to fit the bearing! This kind of bowl is more ideal, the bearing can just snap in! ! Here's a breakdown of the specific steps for the modification: First, install a 6000 series bearing into one side of the hub. we'll use the freewheel side as an example. The second step is to determine the long end of the rear axle and then install the adjusting washer! ! Like this, snap them on one by one. the adjusting washer has an open end. this is a newly improved design. Withstands greater force without stacking! ! Many customers are confused after receiving it and don’t know how to use the adjusting washer! On one of our axles, the small washers are usually paired with around 20, and the large washers with about 10. we generally have extras! There are two types of adjusting washers. the small washer in the picture has one end open. this type is installed inside the bearing. because its outer diameter is small, it can pass through the hole of the hub bowl. ， Another type of large washer is used on the outside of the bearing to adjust the shaft distance for proper fitment with the frame. Install about 5-8 pieces on each side like this, and then put them on and try them out. The length coming out here depends on the condition of the frame! ! The gasket on the other side should be higher than the bottom of the bowl. Then install the bearings here too! ! After installing the bearings on both sides Hold the bearings on both sides like in the picture above! ! ! Give the shaft a few tugs to check for any play. if there's still play, add another small washer. Until there are no gaps left! After adjusting it so that there is no gap, install the dust cover. install the small dust cover on the flywheel side! Then put on a small cover! ! Then tighten the nut! ! just tighten it by hand, don't use a wrench to lock it very tightly! this will not turn! Then install the dust cover on the other side. the other side can be installed with a larger one. Then install the nut. the nut can be installed on the hexagonal groove of the dust cover. As shown in the picture Also, tighten it by hand! After tightening both sides, you can test the lubrication! if the nut is locked too tightly, you can loosen it a little. the main focus is to lubricate the wheel rotation! then install gaskets and nuts on the outside Just match it with the frame!