The housing borehole must be configured so that the entire outside surface of the guide bushing is covered. The sleeve must also cover the borehole of the guide bushing completely in its most extreme axial position.

Production tolerance of the housing borehole:
H6, surface roughness Rz = 6.3 µm. A cylindricity and concentricity tolerance level of IT 3 (ISO) must be observed.

Production tolerance of the sleeve:
g5, surface roughness Rz = 1 µm. The quality of the round guide depends to a large degree on the cylindricity and the concentricity of the sleeve. Therefore, minimum geometrical error must be aimed for. We recommend observing to tolerance level IT 2 (ISO).

For orientation the guide bushing is equipped with a hole for a fixing pin (d3). The supply of lubrication needs another borehole in the housing (d4). Be aware of these facts while designing. 

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