Technical manual deva.de | Maintenance-free, self-lubricating sliding bear

Your challenges are our fascination. Self-lubricating bi-metal sliding bearings For more than 85 years, the name DEVA® has stood for self-lubricating, maintenance-free high-performance materials and sliding bearing solutions. Since the development of the world’s first powder-metallurgical material with embedded solid lubricants in 1936, DEVA® sliding bearings perform where other bearings reach their limits. Our sliding bearing materials are used in a wide range of industrial applications. Wherever it matters: under water, at freezing temperature or hot heat, DEVA® is the world’s first address...

Maintenance-free, self-lubricating sliding bearings

The continuous development of our products and manufacturing processes is our objective. Continuous development is the basis for a wide range of customer-specific and standardized bearing elements. Constantly improving requirements such as longer service life and maintenance intervals, optimized friction coefficients and environmental compatibility are taken into account. Typical applications for deva.bm® sliding bearings can be found in these industries: Iron and steel industry Hydro-Civil Engineering Bridges and steel construction Mechanical engineering Injection molding and tire molding Shipbuilding...

Technical manual deva.bm® Material properties 2 Sliding bearing materials 2.1 Microstructure and material composition 2.2 deva.bm® standard materials 2.3  ariants – macrostructure and V different material compositions Load cases Mating materials Cylindrical sliding bearings 6.1  ecommended standard dimensions R 6.2  its F 6.3 nstallation by means of press-fitting I 6.4 nstallation by supercooling with liquid nitrogen I Sliding plates and segments 7.1  imensions of sliding plates D 7.2  eva.bm® contour parts d 7.3  esign principles for fastening with countersunk screws D 7.4 nstallation description...

deva.bm® sliding bearings  Material properties Maintenance free and self-lubricating high-performance sliding material deva.bm® is a bi-metallic material consisting of a steel strip as a supporting backing layer and a sintered self-lubricating bronze sliding layer. The solid lubricant (graphite or PTFE) embedded in the sliding layer under pre-stress enables maintenancefree application of the sliding bearing. The maintenance free and self-lubricating material is available in different alloys and variants as well as material thicknesses. The two-layer material structure allows compact and heavy-duty...

deva.bm® sliding bearings Sliding bearing materials   Steel backing and bronze matrix with homogeneously distributed solid lubricant deva.bm® sliding bearings are available in standard dimensions and as customized special parts. Customers benefit from our many years of experience in various applications and service in the field of material selection and design of special sliding bearings. 2.1 Microstructure and material composition The high load capability of the steel backing and the bronze sliding matrix with homogeneously distributed lubricant incorporation is characteristic for deva.bm®....

Recommended surface roughness of mating material Ra | [µm] • tandard for dry running S and water lubricated applications • tandard material for S mechanical engineering; high static load, low number of cycles Intermediate Graphite content • eneral for dry running G and water lubricated applications • edium load at high M sliding speed High Graphite content • eneral for dry running G and water lubricated applications • Abrasive environment PTFE as Solid lubricant • eneral for dry running G • High dynamic load • vailable for bearings A D1 ≥ 28 mm Available designs Available shapes Operating conditions...

Technical characteristics Smooth sliding surface without running-in layer Graphite and PTFE alloys The sliding surface is not coated with running-in film • ithout running-in film, the coefficient W of friction in the running-in phase is similar to or slightly higher than in the stationary operating phase • Dry run • il and water lubricated O applications • Low friction distances Graphite alloys The residual porosity of the sintered material is additionally impregnated with oil • il impregnation improves the O coefficient of friction and wear as long as the amount of oil in the pores is sufficient...

deva.bm® sliding bearings Quality and certificates   Environmental protection and production safety We attach great importance to a qualitative, environmentally conscious and safe production. We are committed to this through the application of a variety of internationally recognized standards for quality assurance, emission control and workplace safety. • RoHS und REACH compliant • Certificate of origin • Acceptance test certificates DIN EN 10204 – 2.1; 2.2; 3.1 and 3.2 • Certified according to ISO 9001; ISO 14001 an

deva.bm® sliding bearings  Load cases The four cases of bearing load DEVA® differentiates between four load cases. We do this to take into account the fatigue influences under dynamic load. The percentage values refer to the limit values given in the material data sheets and technical manuals. The specifications should be understood as guide values. With alternation of loads in particular, the frequency and the number of cycles need to be considered with regard to the fatigue properties. Please contact us for a detailed analysis in a personal discussion. The acting normal force is constant or...

deva.bm® sliding bearings Mating materials Roughness and surface finish The deva.bm® sliding materials require the use of a mating material with a hardness of at least 180 HB. If the bearing is additionally lubricated, hardness values of > 130 HB can also be permitted. In the case of abrasive effects from the environment, a hardened surface of 35 HRC / 45 HRC should be used. The surface roughness is ideally Ra = 0.2 to 0.8 μm, produced by grinding. Depending on the operating conditions, higher surface roughness can be accepted. With regard to the surface finish, it is also possible to use protective...