Standard_Parts_Catalogue

Page 1654 | 3.6 Moving, Transferring, Connecting with Shafts and Joints Ball Joint Heads DIN ISO 12240-4 / DIN ISO 12240-1, Series K Technical Information Steel version Features of general use: Type N Steel housing, zinc plated Pairings: Steel internal ring, hardened Brass bearing socket Lubrication possible For universal application conditions, especially with high alter- nating and shock loads in radial and in particular in axial direction. Type W Steel housing, zinc plated Pairings: Steel internal ring, hardened Steel bearing socket, zinc plated, with PTFE insert Self-lubricating For universal application conditions, especially with dynamic load; axial load capacity lower than for type N . Stainless steel version Type NH Stainless steel housing Pairings: Steel internal ring, hardened, hard chrome plated Bronze bearing socket Lubrication possible As Type N in areas exposed to corrosion. Type WH Stainless steel housing Pairings: Steel internal ring, hardened Bronze bearing socket, with PTFE insert Self-lubricating As Type W in areas exposed to corrosion. Type WK Stainless steel housing Pairings: Stainless steel internal ring, hardened Stainless steel bearing socket, with PTFE insert Self-lubricating As Type W in areas exposed to corrosion with high requirements on corrosion resistance, e.g. in the food industry. Bearing play Bearing play refers to the dimension by which the internal ring inside the bearing socket can be moved in a radial or an axial direction without lubrication. Load applied to obtain the measured results: 100 N at room temperature. Lubrication Rod end bearings of type N (lubrication possible) require regular lubrication. When delivered, the rod end bea- rings are not lubricated. The initial lubrication takes place when installed. Within the temperature range of -20 °C to +125 °C, a multipurpose grease has proven to be adequate. Under extreme conditions, a high quality gre- ase such as Gleitmo 805 K should be used. Rod end bearings of type W (self-lubricating) must not be lubricated . The internal ring moves on a PTFE insert in the bearing socket. Types N , NH Lubrication possible Types W , WH , WK Self-lubricating d 1 Bore internal ring Radial bearing play d 1 Bore internal ring Radial bearing play Axial bearing play 5 ... 10 0,005 ... 0,035 5 ... 10 0,005 ... 0,030 2 to 3 times radial play 12 ... 20 0,010 ... 0,040 12 ... 18 0,005 ... 0,035 22 ... 30 0,010 ... 0,050 20 ... 30 0,005 ... 0,055