Filtracion

FILTRATION TECHNOLOGY

Technical Appendix

Quality and Service worldwide

Australia : Stauff Corporation (Pty.) Ltd. P.O. Box 227 24-26 Doyle Avenue, Unanderra Wollongong, N.S.W. AUS-2526 Unanderra Tel. : + 61 2 42 71 18 77 Fax: + 61 2 42 71 84 32 Brazil : Stauff Brasil Ltda. Avenida Gupe 10.767 Galpao 2, Bloco A ˜ WT – Empresarial Parque Castello Branco BRA-Barueri – SP CEP: 06422-120Tel: +55 11 47899020 Fax: +55 11 47899021 China: Stauff International Trading (Shanghai) Co., Ltd. Shangdian Mansion, Pudong 331, Binzhou Road CHN-200126 Shanghai Tel. : + 86 21 58 45 65 60 Fax: + 86 21 58 45 66 80 France : Stauff s.a. 230, Avenue du Grain d’Or Z.I. de Vineuil-Blois Sud F-41354 Vineuil-cedex Tel. : + 33 2 54 50 55 50 Fax: + 33 2 54 42 29 19 India: Stauff India Pvt. Ltd. Gat. No. 2340Pune-Nagar Road, Wagholi IND-Pune - 412207 Tel. : + 91 20 705 19 90 Fax: + 91 20 705 19 89 Italy: Stauff Italia s.r.l. Via Pola 21/23 I-20034 Birone di Giussano Tel. : + 39 0362 31 21 13 Fax: + 39 0362 33 55 36 Japan: Ohtsuka Tec. Co. Ltd. 1-7-19 Minami Shinagawa Shinagawa-Ku JPN-Tokyo 140 Tel. : + 81 3 34 72 12 01 Fax: + 81 3 34 72 12 09 Canada: Stauff Canada Ltd. 866 Milner AvenueCAN-Scarborough, Ontario M1B 5N7 Tel. : + 1 416 282 46 08 Fax: + 1 416 282 30 39 USA: Stauff Corporation 7 Wm. Demarest Place USA-Waldwick, N.J. - 07463 Tel. : + 1 201 444 78 00 Fax: + 1 201 444 78 52 United Kingdom: Stauff UK 332, Coleford Road Darnall GBR-Sheffield, S 9 5 P H Tel. : + 44 1142 518 518 Fax: + 44 1142 518 519

Walter Stauffenberg GmbH & Co. KG
P.O. Box 17 45 · D-58777 Werdohl Im Ehrenfeld 4· D-58791 Werdohl Tel. : + 49 (0) 2392 916-0 Fax: + 49 (0) 2392 2505 e-mail: sales @stauff.com Internet: http://www.stauff.com

All kinds of Filter Elements - High pressure and return line filters - Quality consciousness Original STAUFF-Filter elements fit into existing filter installations of most of the popular manufacturers. They are produced in our facilities. Our complete range gives you theopportunity to get access to more than 10.000 different filter elements. The product line covers all common filter materials such as stainless fiber, stainless wire mesh, polyester fiber, paper and inorganic glass fiber. Moreover, STAUFF offers an extensive range of filter systems for high pressure and return line applications. All products manufactured by STAUFF are subject to quality controlprocedures according to international standards. This ensures a permanent high quality.

Distributors and warehouses in all industrial countries.

Technical Appendix
Choice of filters
Choice of a suitable micron rating Generally, the type of components incorporated in the hydraulic system will determine the micron rating required. It has been clearly demonstrated that system components willoperate reliably for years if a specific minimum oil cleanliness grade is maintained. Frequently the choice will be determined by the most sensitive component in the system. Choice of the optimum filter In selecting the filter, the following information must be considered: • maximum flow volume (Qmax) through the filter including surge flows • kinematic viscosity (υ) of the fluid in mm2/s (cSt) atcold start temperature and operating temperature • density ρ of the fluid • micron rating (µm): see table • filter material The aim is to choose a filter whose total differential pressure (∆p) is no greater than ∆pmax = 1,0 bar (for pressure filters) or ∆pmax = 0,5 bar (for return line filters), in a clean state at the normal operating temperature. These values have been proven in practice to givethe optimum service life for the element. The nominal flow volume of the filter is the obvious reference value for pre-selection and this should be larger than the flow to be filtered. Qnom > Qmax
Oil cleanliness grade as per ISO 4406 13/10 16/13 18/15 19/16 Micron rating 3 5 10 20 µm µm µm µm Area of Application servo valve hydraulics proportional hydraulics standard hydraulics >100 bar...