SKF has a unique understanding of rotating equipment and how machine components and industrial processes are interrelated. We provide a wide range of products and related technologies to OEM and aftermarket customers around the world, in every major industry, at each phase of the asset lifecycle.
SKF offers a full range of services and solutions to both OEM and aftermarket customers around the world, in every major industry, at each phase of the asset life cycle. Services & Solutions from SKF can help you to:
NBS, is a mark especially created thanks to a deepco-operation among a group of producers able to make the best of their years of experience in the field of needle bearings. A very high technical know how and the most advanced machinery for both production and control are used. We will give a complete idea of our range of products, but would like to remind you that in case of special applications our Technical Dept. is at your disposal to help you. All technical characteristics are in accordance with ISO and DIN international requirements, our aim is to supply all our customer s with a quality product able to keep its characteristic unchanged during the years.
A brand elaborated by a group of producers using very advanced technical know-how and highest technology
machineries. Its production envolves all standard bearings schedules: for special technical or constructive requirements a
sta! of competent technicians works to satisfy every problem about design and utilisation.
The ISB® trademark represents a range of technical articles, the production of which is entrusted to a pool of constructors who, exploit their several decades of experience in the sector. High level technical know-how together with advanced equipment guarantee elevated production standards both in the productive phase as well as the quality control phase on the !nished product.
The ISB bushes present multiple characteristics which can be
summarized as follows:
Spherical plain bearings are guidable mechanical components ready to be applied. The dimensions are unified and permit the transmission of both static and dynamic strength in conjunction with oscillating alignment, rotary and bouncing movements in several directions. The internal ring is provided with an external convex spherical surface while the external ring is equally spherical with a concave internal surface. They are available with sliding surfaces realized in a combination of steel on steel and in many other executions which do not require maintenance.
The rod ends consist of a body, also defined as housing, in the form of a head in which is permanently inserted, in the proper seat, a spherical plain bearing, with dimensional precision and in the shape of the internal and external diameter, which comply with the same DIN specifications for revolving bearings. Even the principal dimensions of the spherical plain bearings and the heads follow the DIN specifications, internationally recognized by ISO regulations. ISB® spherical plain bearings are constructed respecting the principal tolerances and dimensions for mounting indicated by the above mentioned regulations. Consequently, they are interchangeable with products from the main.
Leaders on the market.
Pillow Blocks WL made with monoblock cast iron GG20 housing, have high performance bearings made with 100CR6 steel, that ensure transmission without vibrations. The adjustability of bearing allow a perfect alignment of the shaft. The seals of the bearings ensure perfect protection of the rotating parts of the bearing from moisture and dust. Pillow blocks WL can work at variable temperatures from -20°C to +100°C and are equipped of lubricator which permits to perform lubrication at various intervals depending on speed, load and environmental conditions.
Ø available mm: 15 – 17 – 20 – 25 – 30 – 35 – 40 – 45 – 50 – 55 – 60 – 65 – 70 – 75 – 80 – 85 – 90
Available also with conical bearings with adapter sleeves.
Shaft seals consist of a metal case, a sealing element and a garter spring.
The sealing effect is achieved by interference between lip and shaft, the spring allows the lip to maintain a radial load. After a short period the sealing edge is transformed in a defined contact band which sizes are between 0,4 and 1,3 mm. An oil film forms under the lip contact area, its thickness is between 1 and 3 μm, the meniscus is maintained through capillary action between shaft and the atmosphere in order to avoid leakage. An increase of the film thickness means increasing pressure of the fluid to be sealed reaching bigger values which determine the meniscus break and therefore leakages.