478

478 FRANCEJOINT | Alldatasheet

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Technical content

DESCRIPTION The BECA 478 profile is a wiper seal composed of a thin brass wiping lip assembled in tandem with a second rubber wiping lip in a metal shell. This seal is designed to efficiently remove the solid particles (ice, mud) and all other impurities that stick to the rod. ADVANTAGES Very good external wiping effect even for stubborn soiling (ice, mud) Very good abrasion resistance Assembly in open groove APPLICATIONS Cold and heavily contaminated environments Agriculture Mobile machinery Material handling - Lifting Hydraulic cylinders MATERIALS Primary sealing lip Brass Secondary sealing lip NBR 70 Shore A Metal cage Steel  TECHNICAL DATA Temperature -40°C / +100°C Speed 1 m/s Media Mineral oils Fire-resistant hydraulic fluids (HFA, HFB and HFC) Water Air The figures above indicate the maximum values and may not be cumulated. They may be developed, depending on the materials used.  SURFACE ROUGHNESS Roughness Dynamic surface area Static surface area Groove flanks Ra 0.1 - 0.4 µm ≤1.6 µm ≤3.2 µm Rz 0.63 - 2.5 µm ≤6.3 µm ≤10.0 µm Rmax 1.0 - 4.0 µm ≤10.0 µm ≤16.0 µm  CHAMFER The chamfer length as well as the chamfer angle are determined by the rod seal. WIPER SEALS BECA 478 ØD1 R1 max = 0,4 SØd1 20/30° 45° x 0,5 CH1 QUALITY & EXPERTISE FOR YOUR SEALING NEEDS FRANCE JOINT SAS Zone Artisanale Le Mortier - B.P . 50009 - Cugand - 85613 Montaigu Cedex - France Ph. +33 (0)2 51 42 13 76 - Fax +33 (0)2 51 43 61 14 - Email: contact@francejoint.fr - Website: www.francejoint.com HYDRAULIC SEALS | WIPER SEALS | BECA 478