Carbon brushes for fractional motors

Transcription

1 Carbon brushes for fractional motors Materials Physical values Location SKT L-materials: carbon graphite, pressing direction: tangentially or axially -L24- h m L25- h m L26- h l L28- h m L29- h m L41- m l L42- h l L43- h m L45- h m L48- h l L53- h l L55- h m L62- h m L63- h m L64- h m L71- m m L73- h m L74- h m L75- h m L82- h m L83- h m L84- h m L85- h m L86- h m L87- h m L88- h m L89- h m L93- h m L94- h m L95- h m L97- h m L98- h m Schunk Kohlenstofftechnik HOFFMANN ELEKTROKOHLE AG

2 Materials Physical values Location HOS HP-materials: carbon graphite, pressing direction: tangentially or axially -HP3221- h l HP3223- h l HP3251- h l HP3356- h l L/HP-materials can be used in universal motors for household appliances and for hand-held electric power tools. Their versatility makes them ideal for solving special problems. The essential characteristics for these non-metallic materials are: To increase the efficiency of the materials, it is basically possible to perform a subsequent impregnation treatment with F7, F10, F12, F13, F20, F25, F101, F131, S, ZP as well as special impregnations. The impregnation KVP is applicable especially for improved carbon brush bedding. Because the values for the contact voltage (U ü ) and the coefficient of friction (µ) depend very much on the measuring conditions, they should be considered only as recommended values. The symbols represent the following ranges: good commutation low radio interference level long brush life usable in high-performance motors high h > 3.0 > 0.22 Schunk Kohlenstofftechnik GmbH Rodheimer Strasse Heuchelheim Germany Phone: +49 (0) Fax: +49 (0) infobox@schunk-group.com Hoffmann & Co., Elektrokohle AG Au Steeg Austria Phone: Fax: office@hoffmann.at 13.14e/500/2008

3 Materials Physical values Location SKT L-materials: carbon graphite, pressing direction: radially U ü µ µωm 2.5/7 5/40 10/40 N/mm 2 g/cm 3 % m/s A/cm 2 -L252- h m L262- h m L412- m l L422- m m L732- h m L742- h m L752- h m L822- h m L842- h m L852- h m L872- h m L892- h m L942- h m L-materials can be used in universal motors for household appliances and for hand-held electric power tools. Their versatility makes them ideal for solving special problems. The essential characteristics for these non-metallic materials are: To increase the efficiency of the materials, it is basically possible to perform a subsequent impregnation treatment with F7, F10, F12, F13, F20, F25, F101, F131, S, ZP as well as special impregnations. The impregnation KVP is applicable especially for improved carbon brush bedding. Because the values for the contact voltage (U ü ) and the coefficient of friction (µ) depend very much on the measuring conditions, they should be considered only as recommended values. The symbols represent the following ranges: good commutation low radio interference level long brush life usable in high-performance motors high h > 3.0 > 0.22 Schunk Kohlenstofftechnik HOFFMANN ELEKTROKOHLE AG

4 Schunk Kohlenstofftechnik GmbH Rodheimer Strasse Heuchelheim Germany Phone: +49 (0) Fax: +49 (0) Hoffmann & Co., Elektrokohle AG Au Steeg Austria Phone: Fax: e/500/2008

5 Carbon brushes for fractional motors Materials Physical values Location SKT E-materials: electrographite F-materials: phenolic resin bonded graphite and carbonized G-materials: epoxy resin bonded graphite H-materials: carbon pressing direction: tangentially or axially -E43- vl m E105- m l F14- l m F17- l m F21- l m F25- l l F34- l m F35- l m F37- h l * F70- h m G11- h l G15- h l G40- h l G60- h n H18- m m * Rockwell Hardness HR 2.5/7 The materials E, F (very soft) and H (very hard) are reserved for special fields of application with various levels of load. It is basically possible to perform a subsequent impregnation treatment with F7, F10, F12, F13, F20, F25, F101, F131, S, ZP as well as special impregnations. The material G can be impregnated with F10, F12 and F13. Because the values for the contact voltage (U ü ) and the coefficient of friction (µ) depend very much on the measuring conditions, they should be consid- ered only as recommended values. The symbols represent the following ranges: very low vl < 1.5 < 0.08 high h > 3.0 > 0.22 Schunk Kohlenstofftechnik HOFFMANN ELEKTROKOHLE AG

6 Materials Physical values Location HOS HK-materials: phenolic resin bonded graphite and carbonized HG-materials: epoxy resin bonded pressing direction: tangentially or axially -HK11- l m HK12- m m HG22- h m HG23- m m HG24- h m HG25- m m HG26- m m HG27- m m HG28- m m HG29- h m HG30- m m Current density and allowed peripheral speed are to be considered as recommended values. The materials can be impregnated for special fields of application; in order to achieve optimal bedding conditions (faster motor bedding, less commutator sparking, better radio interference, better motor performance), it is also possible to impregnate only the running surface of the brush with a treatment called KVP. high h > 3.0 > 0.22 Schunk Kohlenstofftechnik GmbH Rodheimer Strasse Heuchelheim Germany Phone: +49 (0) Fax: +49 (0) infobox@schunk-group.com Hoffmann & Co., Elektrokohle AG Au Steeg Austria Phone: Fax: office@hoffmann.at 13.14e/500/2008

7 Materials Physical values Location SKT F-materials: phenolic resin bonded graphite and carbonized pressing direction: radially U ü µ µωm 5/7 5/7 10/40 N/mm 2 g/cm 3 % m/s A/cm 2 -F212- l m F217- l m F218- l m F352- l m All above specifications are typical average values and are based upon measurements with new carbon brushes and ideal conditions. Location HOS HK-materials: phenolic resin bonded graphite and carbonized HG-materials: epoxy resin bonded graphite pressing direction: radially -HK11- m m HG13- h m HG24- h m HG31- h m HG8989- h m Current density and allowed peripheral speed are to be considered as recommended values. The materials can be impregnated for special fields of application; in order to achieve optimal bedding conditions (faster motor bedding, less commutator sparking, better radio interference, better motor performance), it is also possible to impregnate only the running surface of the brush with a treatment called KVP. high h > 3.0 > 0.22 Schunk Kohlenstofftechnik HOFFMANN ELEKTROKOHLE AG

8 Schunk Kohlenstofftechnik GmbH Rodheimer Strasse Heuchelheim Germany Phone: +49 (0) Fax: +49 (0) Hoffmann & Co., Elektrokohle AG Au Steeg Austria Phone: Fax: e/500/2008

9 Carbon brushes for fractional motors Materials Physical values Location SKT A-materials: copper graphite resin bonded K-material: copper graphite pitch bonded S-material: silver graphite pitch bonded -A20- vl m A24- l l A41- vl l A A433- vl l A44(3)- vl l A473- vl l A513- vl m A A52- vl m A533- vl l A553- vl l A62- l l K177- vl l S13- vl m The materials A, K and S are distinguished by metal additives. The fields of application for these materials are: low-voltage motors, micro motors, and motors for toys. A third number behind the material description A and S indicates the production method and design. Because the values for the contact voltage (U ü) and the coefficient of friction (µ) depend very much on the measuring conditions, they should be considered only as recommended values. The symbols represent the following ranges: very low vl < 1.5 < 0.08 Schunk Kohlenstofftechnik HOFFMANN ELEKTROKOHLE AG

10 Schunk Kohlenstofftechnik GmbH Rodheimer Strasse Heuchelheim Germany Phone: +49 (0) Fax: +49 (0) Hoffmann & Co., Elektrokohle AG Au Bad Goisern Austria Phone: Fax: e/500/2008