Stenso - Hovedkatalog 2019

Bore diameter Tolerance 18 30 30 50 50 80 80 120 10 18 Bore diameter Tolerance von (mm) bis (mm) H 8 180 250 250 315 315 400 120 180 As per DIN 3760, maximal surface roughness (peak to valley distance) Rt = 16 µm. We recommend a stopper or safety ring , against which the seal can be fixed. If this is not possible, care should be taken that the seal is in alignment with the axis of shaft. To simplify assembly, the housing should be bevelled between 5° und 10° on the front face - with a depth of 1 mm for rings up to 10 mmthickness - and a depth between 1.2 - 1.5 mm for rings than 10 mm. On the front face, the shaft must also exhibit a bevel with an angle of l15° - 25° with rounded and polished transition. 3.2. Housing Bore Good pressfit of shaft seal in the housing bore is of extreme importance. For bore diameter, the tolerance zone / clearance space H8 is preferred as per ISO Standard UNI-6388-68 (See table) +0,063 0,000 +0,027 0,000 +0,072 0,000 +0,033 0,000 +0,081 0,000 +0,039 0,000 +0,081 0,000 +0,046 0,000 +0,054 0,000 from (mm) to (mm) H 8 303 Radial Lip Seal