At this year’s Hannover Messe in Germany, bearing manufacturer NKE Austria GmbH presents bearings with black oxide finish. The protective layer improves run-in and wear characteristics and protects against environmental effects. Especially in critical applications such as wind turbine gear boxes, black oxide finish is a cost-effective and technically viable means of prolonging the service life and performance of rolling bearings. The black oxide finish forms a protective layer for steel parts. In a multistage chemical process, the surface layer of the treated parts is converted into a 1 to 2 micrometer thin mixed ferrous oxide layer that causes the characteristic black appearance. Black oxide finished bearing components feature a set of special technical characteristics, especially in the case of components that move relative to each other. Multiple protective effects can be achieved if only one functional element (typically the rolling elements) is treated. For best effect, however, all functional surfaces of a rolling element bearing, including the inner and outer ring as well as the rolling elements, should be black oxide finished. Black oxide finishing is already an established method in other industries. NKE uses this technology to further improve the technical properties of rolling bearings. The method has…
TBB drawn cup needle roller bearings is formed with thin steel plate through precision punching with very sectional height and big load capacity. This kind of bearings are especially applicable to the big quantity production with economic demands. Stable combination is used between the needle bearings and the bearing cage. No axle fixture is required. Even under high speed and heavy load condition, the bearing functions can be fully maintained. Furthermore, no lubricating for a long time is possible due to its high storage volume of grease. Structure Types Mounting The outer ring of the drawn cup needle roller bearings made of thin steel plate through punching will reach the correct shape and dimension precision when it is pressed into the bearing cage. Therefore, the dimensional precision and the shaped of bearing cage will directly effect the inscribed circle of the bearing. Thus enough attention must be attached to the size and shape of the bearing cage. In mounting this kind of bearings, it will be easier to use the pressing core shaft as illustrated in the figure. Special tool must be used to press on the side with printed code mark to compress get the bearings fitted when assemblying….
Material Cronidur30ISO Standard: DIN 1.4108Chemical formula: X30CrMoN15-1Advantages: Finer structure, less heat generated, higher permissible contact pressure, much higher fatigue life reliability (10x compared with GCr15 in best case), better corrosion resistance and high temperature resistance Material Ceramic Si3N4Advantages: Excellent tribological properties, lower density to improve the bearing kinematics, lower coefficient of thermal expansion, no magnetism, high current insulation
A GROWING NUMBER OF “BARGAIN” BEARINGS are being brought into the Heavy Duty Truck and Trailer marketplace by bearing brokers whose primary emphasis is on price. They ignore the critical issues of product integrity, performance, and supplier support. Initially the price has some attraction, but testing performed by Hyatt and other major suppliers has proven that a much superior performance is achieved from a quality product provided by a reputable manufacturer. For tapered roller bearings to achieve their Maximum Life in application (L10 Life), the load must be evenly distributed over the length of the rollers. To ensure proper distribution of bearing loads, Hyatt Tapered Roller Bearings are manufactured with a crown on the raceways and rollers. In our experience, the “bargain” products rarely have raceways and rollers that are crowned. Frequently the components have concave contact areas, generating even higher stresses within the bearing and promoting early catastrophic failure. Bearing brokers will state that their products conform to American Bearing Manufacturers Association (ABMA) specifications. These standards, however, only relate to the external dimensions of the bearing and its compatibility with the wheel hub and spindle. If you want a quality product which is going to provide years of uninterrupted service, then…
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…