Technical Principles | Informations Techniques Informaciones Técnicas | Princípios técnicos 32 Installation of Simmerring Combi Seal Bore requirements for all COMBIs which has not elastomer on the outer diameter (ex. SF5 and SF6) Tolerance: ISO H8 Chamfer: 20° ± 5° x 1,5 mm (0.06 in) Roughness: Ra = 0,8 … 3,2 µm Rz = 6,3 … 16 µm Rmax < 16 µm Shaft requirements AA The requirements for Standard Simmerring are valid AA Shaft hardening required. Handling AA Proceed carefully and ensure that the sealing lips are not damaged during handling and when inserting the shaft (this applies especially to spline shafts). Bore requirements for all COMBIs which has elastomer on the outer diameter (ex. SF19 and SF8) Tolerance: ISO H8 Chamfer: 20° ± 5° x 1,5 mm (0.06 in) Roughness: Ra = 1,6 … 6,3 µm Rz = 10 … 25 µm Rmax < 25 µm Fitting procedure AA The same installation instructions as for Standard Simmerring are valid AA Use care when inserting the shaft so that the polyurethane lip does not bend AA Please inquire for removal instructions (air side first). Replacement AA If a Simmerring Combi Seal is replaced, the shaft must be replaced/renewed to fulfil the roughness, hardness and tolerance requirements AA For Standard Simmerring Combi Seal SF5 and SF6, a sealant on the outside diameter is required. Installation of Simmerring Cassette Seal Requirements for shaft and bore Tolerance: ISO H8/h8 Bore chamfer: 20° ± 5° x 1 mm (0.04 in) Shaft chamfer: 20° ± 5° x 3 mm (0.12 in) Roughness: Ra = 0,8 … 3,2 µm Rz = 10 … 16 µm Rmax of the bore < 16 µm Rmax of the shaft < 25 µm Handling AA The spring may not be removed AA Do not attempt to open the seal AA Store the seals stacked. Types of installation (→ Fig. 16) AA Installation Case A → Fig. 17 AA Installation Case B → Fig. 18 AA Installation Case C → Fig. 19 AA Installation Case D → Fig. 20 AA Installation Case E → Fig. 21 Original installation Installation in case of repair Fig. 15 Installation during repair and unit assembly / Montage en cas de réparation ou de remise en état du dispositif / Montaje al reparar y montar el grupo / Montagem de reparo e unidade de montagem Fig. 14 Installing a Simmerring with sealing lip made of PTFE / Montage d'une bague Simmerring avec lèvre d'étanchéité en PTFE / Montaje de un retén Simmerring con labio de sellado de PTFE / Montagem de retentor Simmerring com lábio de vedação em PTFE