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Federal-Mogul Deva
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| | | deva.bm® maintenance-free | | |
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| | | 5 Fits | | |
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| | | Permissible fit and tolerance ranges | | |
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| | | Shaft | | |
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| | | Normal applications d7 d7 d7 d7 | | Precision applications e7 e7 e7 e7 | | |
| | | In installed state | | |
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| | | H9 H8 H8 / H9 (Standard) H8 / H9 | | |
| | | < 20 > 20 > 45 > 180 Table 5.1 - Fits and tolerances | | |
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| | | deva.bm® is pressed into the housing with an interference fit (using a screw press, hydraulic press or press-fit mandrel). Tapping or driving into place is not permissible. The standard housing bore is H7. Mean roughness of housing: Ra = 3.2 j^m The housing has a chamfer of 20 - 40° for easier mounting. | | |
| | | To achieve minimum clearances after mounting (IT7 or higher), finishing should take place in the mounted state. For this purpose, deva.bm® can be provided with a machining allowance, in which case the running-in film has to be applied after finishing. | | |
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| | | Design | | |
| | | (0 il | | |
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| | | Sliding surface design | | |
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| | | '55 a | | |
| | | For grease-lubricated applications, the deva.bm® sliding layer can be provided with regularly spaced lubrication indentations, which act as a lubricant 'reservoir' to prolong the service life (Figure 6.1.3). | | |
| | | For applications without any special dry running criteria, deva.bm® can be used with a plain sliding surface and a running-in film (Figure 6.1.1). For difficult, non-lubricated applications in abrasive and vibrating environments, etc., deva.bm® can also be provided with cleaning grooves in the sliding layer as a means of prolonging the service life (Figure 6.1.2). | | |
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| | | Figure 6.1.2 - Sliding layer with cleaning grooves | | Figure 6.1.3 - Sliding layer with lubrication indentations | | |
| | | Figure 6.1.1 - Plain sliding surface | | |
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