Wheel Hub Assembly – Time for replacement?

Wheel hub problems are often discovered while ruling out other sources for the squealing and grinding sounds coming from that area of the vehicle or the gradually increasing vibration noticed by the driver. Because such symptoms – odd noises, vibration, deterioration in handling, etc. – The common to a variety of suspension and steering system parts, it is often through the process of elimination that the need to replace this part is apparent. the it is determined for sure that this is the source of the vehicle’s problems, however, the repair Should be made as soon as possible in order to avoid causing damage to other parts or a dangerous road situation. Those that are fairly skilled at performing automotive repair projects at home are likely to find the replacement of the hub and related parts more time consuming than Challenge. Any repair is more likely to last longer when made with quality parts,Timken, Pronto, Quality-Built, WJB, Replacement, Centric, Moog, Dorman, Genuine, Beck Arnley, First Equipment Quality, DuraGo, API, NSK and Febi. (MAPC Bearings OEM for most of these brands) Wheel Hub Assembly – Time for replacement? Wheel Hub AssemblyA hub assembly, also known as a wheel hub assembly or…

How to prevent bearing from corrosion

Stainless steel and chrome steel are normally corrosion-resistant, not easy to rust. However, improper storage or handling at high humidity, condensation environment will reduce bearing life. How does the corrosion of bearings happen? If the bearing is prolonged exposure to water can cause rust. With the passage of time can cause peeling and crack formation, which are premature bearing failures. In addition, if the bearing is too loose or improper installated, contact corrosion will occur.. Bearing corrosion will reduce the machine performance and productivity, increasing the cost of operation. Common raceway corrosions include, bearing contact corrosion, corrosion of the outer surface and the inner ring of holes. How to prevent bearing corrosion? Prevention is the main thing. Here are some methods which can prevent bearing corrosion Use waterproof grease, it can form a protective barrier in the wet environment Add some protective coatings, such as chrome, nickel, zinc Adjust bearing, if it is suspected of contact corrosion Try to use a different material, in extremely corrosive environment, you can use ceramic bearings for example.

Spindle Bearing

The manufacturing of metal parts and components is so significant to any economic marketplace, typically, the machine tool industry is utilizing the latest technological advances in manufacturing processes. Here we’d like to talk about machine tool SPINDLE BEARING Most spindles use a combination of angular-contact ball bearings and cylindrical roller bearings. The angular-contact types install at a spindle work end because they handle both axial and radial loads. The other end houses a cylindrical roller bearing which, by design, floats or slips axially to compensate for spindle thermal expansion yet operates with zero radial clearance for rigidity. The basic requirements for spindle: High running accuracy High speed Wide range of speed High rigidity Low temperature rise High reliability Some of the above requirements are in confrontation, so it’s almost impossible for spindle to meet all the above requirements simultaneously. Therefore, the main performance of spindle should be taken into consideration when designing spindle supporting. Bearing types and matched method depend on machine tool different performances.

TBB Track Roller or Cam Follower bearings

TBB Track Roller is a bearing unit composed of machined thick-wall outer ring, needle rollers or cylindrical roller sets, or cage guidance or full complement needle roller, inner ring or bolt and seal. Featuring multiple compact structure, high rotating accuracy, large varieties, broad adaptability and easy installation, it can bear high radial load and certain shock load and is widely used in machine tool, metallurgical, textile and printing machinery, processing lines and etc. Main structures as below chart: Whether you use cam follower bearings for cam followers, or for track, guide, or support rollers, their performance depends largely on the type you select. Important factors include loads, speeds, misalignment, installation, and lubrication. Cam follower bearings are used mainly in three types of applications: following the surface of a cam, supporting linear motion components, or laterally locating components during linear movement. Of these, cam follower applications range from simple two-dimensional cams to complex three-dimensional indexing cams with multiple followers… Click here for more information

Selecting & Applying Cam Follower Bearings

Whether you use cam follower bearings for cam followers, or for track, guide, or support rollers, their performance depends largely on the type you select. Important factors include loads, speeds, misalignment, installation, and lubrication. Cam follower bearings are used mainly in three types of applications: following the surface of a cam, supporting linear motion components, or laterally locating components during linear movement. Of these, cam follower applications range from simple two-dimensional cams to complex three-dimensional indexing cams with multiple followers. Linear motion support applications include platform support rollers and die transfer rollers. Supporting a linear motion component with cam follower bearings reduces sliding friction and track wear. By reducing wear, it also helps maintain precise machine motion. Plus, cam follower bearings guide linear motion components in lateral as well as vertical directions. Basic types Cam follower types include standard stud, heavy stud, and yoke. Both stud types are mounted cantilever-style on a support housing. The heavy stud version is used for heavy loads, shock loading, or applications requiring minimal deflection. Except for the stud diameter and end plate design, standard and heavy stud versions are essentially the same. The yoke version mounts on a pin with a straddle or yoke…

Needle Bearing Types

Needle bearings are roller bearings with rollers that have high length-to diameter ratios. They are used in farm and construction equipment, automotive transmissions, small gasoline engines, gear pumps, small appliance and tool motors, alternators, and aircraft controls. Needle bearings are roller bearings with rollers that have high length-to diameter ratios. They are used in farm and construction equipment, automotive transmissions, small gasoline engines, gear pumps, small appliance and tool motors, alternators, and aircraft controls. Needle bearings are usually lubricated with grease, but oil or oil-mist lubrication is preferred for heavy-duty or high-speed applications. Many light-duty bearings never require relubrication, but high loads or speeds demand it. Compared with other roller bearings, needle bearings have much smaller rollers for a given bore size. They have the highest load capacity for a given radial space of all rolling-element bearings, but their use is limited to bore diameters less than 10 in. All needle bearings are variations of two basic designs. The first, full complement, has a full complement of needles and contains no retainer. The second, caged needle, contains a retainer or cage for roller guidance and spacing. Caged bearings have smaller roller complements and lower load capacities than full-complement bearings. Their…

Needle roller bearings

Most rolling-element bearings are either ball or roller bearings. The roller bearing family consists basically of cylindrical, tapered, spherical, and needle bearings. Needle roller bearings are the smallest and lightest of the roller bearing family. That gives them specific advantages for certain applications, particularly those requiring reduced weight and space. The high roller length-to-diameter ratio helped give the bearings their name as well as their operating characteristics. Essentially, needle roller bearings have: • Higher load capacity than single-row ball or roller bearings of comparable OD.• The ability to handle a larger, more rigid shaft in a given application.• Excellent rolling characteristics within a small cross section.• Generally lower cost, especially for the drawn-cup type compared with machined versions. Needle rollers The most economical type of needle roller bearing is a full-complement of loose needle rollers assembled directly between a hardened and ground shaft and housing. Generally, hardened end washers provide axial location. This type appears in many applications such as those where a hardened and ground gear bore serves as the outer raceway. When application requirements are met and assembly is not difficult, a full complement of rollers forms a bearing of small cross section and high load capacity. It…

Speed Racing Ceramic Bearings

If you are a cyclist looking to make your bike lighter and help you boost your cycling performance, easily make it possible by upgrading to Ceramic/Hybrid Bearings. TBB Ceramic and Hybrid bearings are specially designed for bicycle related applications such as wheel hubs, bottom brackets, and chain tensioner pulleys, etc. They have been proved to reduce riders pedalling watts. We use G5 grade ceramic balls, to meet up to highest cycling requirements and bearing clearance which can meet up to a smooth and durable longer life time. Ceramic Balls have many advantages compared to Steel Balls. Bearing with ceramic balls can increase bearing performance and extend bearing life when used on high speed application or in a chemical, vacuum or high temperature environment. We offers Si3N4/ZrO2 Ceramic balls for use in loose ball wheel systems, such as wheel hubs. Features of Ceramic Balls Much lighter weight (Si3N4 ball only 40% weight of steel ball). Lower torque needed for pedal. Lower thermal expansion, excellent mechanical property at high temperature. Works in low lubrication condition. TBB can provide ceramic balls with dia.: 2.38mm(3/32″), 3.175mm(1/8″), 3.969mm(5/32″), 4.763mm(3/16″), 5.95mm (15/64″), 6.35mm(1/4″), etc.  Ceramic Ball Materials include: Si3N4, ZrO2, Al2O3, SiC, etc. 

Heat Treatment of Bearing Steels

When bearing steels are in their soft (unhardened) state, metallurgists refer to their structure as being in the pearlite state. In order to harden the steel it must be heated to a very high temperature and then cooled very rapidly. When heated in the heat treat furnace to 1,750°F, the structure transforms from pearlite to what is known as austenite. After quenching (very rapid cooling), the structure then transforms from austenite to martensite. Once transformed to martensite, the steel becomes very hard. However, at this point it is not considered “thermally stabilized”. This is because not all of the austenite transforms into martensite during the quenching process. This phenomenon is called “retained “austenite”. If the steel is not thermally stabilized, the retained austenite will over an extended period of time (possibly years) transform into martensite. This transformation is accompanied by an increase in volume that is called metallurgical growth (not to be confused with thermal growth). Metallurgical Growth will cause a change in dimension and form of any steel parts such as bearings’ even at room temperature. While not a problem with low precision commodity type bearings, in high precision (ABEC 5P, 7P, 9P) miniature bearings this lack of dimensional…