AT70960B - Ball or roller bearings with electrical insulation. - Google Patents

Ball or roller bearings with electrical insulation.

Info

Publication number
AT70960B
AT70960B AT70960DA AT70960B AT 70960 B AT70960 B AT 70960B AT 70960D A AT70960D A AT 70960DA AT 70960 B AT70960 B AT 70960B
Authority
AT
Austria
Prior art keywords
ball
roller bearings
electrical insulation
bearings
insulation
Prior art date
Application number
Other languages
German (de)
Original Assignee
Skf Svenska Kullagerfab Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Skf Svenska Kullagerfab Ab filed Critical Skf Svenska Kullagerfab Ab
Application granted granted Critical
Publication of AT70960B publication Critical patent/AT70960B/en

Links

Landscapes

  • Rolling Contact Bearings (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Kugel- oder Rollenlager mit elektrischer Isolierung. 



   Es ist bekannt, dass bei elektrischen Maschinen, besonders bei schnell umlaufenden, das durch die Lager hindurchfliessende Streufeid starke Kurzschlussstrome verursachen kann, welche das Lager erhitzen. Wenn der Rotor auf Kugel- oder Rollenlagern gelagert ist, 
 EMI1.1 
 
 EMI1.2 
 Kugellagen mit isoliertem Aussenringe, wogegen die Fig. 3 und 4 Kugellager mit isoliertem Innenringe darstellen. 
 EMI1.3 
 Der innere Lagerring 9 ist gewöhnlicher Konstruktion. Wie leicht ersichtlich, verhindert die im Aussenring befindliche elektrische Isolierung das   Hindurchfliessen   von elektrischen Strömen durch die Kugeln und daraus herrührende Abnutzung der Kugeln oder der Laufflächen der Lagerringe. 



   Bei der in Fig. 2 dargestellten Ausführungsform sind die gegen die Isolierung 3 anliegenden Flächen der beiden   Laufringe 1   und 2 geriefelt oder mit Windungen versehen, um grössere Haltbarkeit des   Aussenringes,   besonders gegen axiale Druckkräfte, herbeizuführen.

   Wenn die fraglichen Flächen gemäss der Zeichnung mit einer Mehrzahl in sich geschlossener Rinnen ausgebildet sind, wird ein plastisches, erstarrendes Isoliermaterial verwendet, das zwischen 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 und 12 mit zwischenliegender Isolierung 13 zusammengesetzt ist Lose Isolierplatten 7 und 8   isolieren die Seitenflächen des inneren Lagerringes von den nächstliegenden Metallflächen des Aehsennansches J4 und der Spannbüchse 15, wenn das Lager, wie auf der Zeichnung,     als Führungslager   montiert ist. 



   Die in Fig. 4 dargestellte Ausführungsform unterscheidet sich von der in Fig. 3 gezeigten in der geänderten Form der Isolierung 13. Die Isolierplatten 7 und 8 sind hier als überflüssig weggelassen, indem der äussere Lagerring 10 im   GehäH s fest eingespannt   
 EMI2.2 
 kann sie für Kugel- oder RoHenlager aller Art Anwendung finden.



   <Desc / Clms Page number 1>
 



  Ball or roller bearings with electrical insulation.



   It is known that in electrical machines, particularly in the case of rapidly rotating machines, the scattering shadow flowing through the bearings can cause strong short-circuit currents which heat the bearing. If the rotor is mounted on ball or roller bearings,
 EMI1.1
 
 EMI1.2
 Ball bearings with insulated outer rings, whereas FIGS. 3 and 4 show ball bearings with insulated inner rings.
 EMI1.3
 The inner bearing ring 9 is of ordinary construction. As can be easily seen, the electrical insulation located in the outer ring prevents electrical currents from flowing through the balls and the resulting wear on the balls or the running surfaces of the bearing rings.



   In the embodiment shown in FIG. 2, the surfaces of the two races 1 and 2 resting against the insulation 3 are grooved or provided with windings in order to increase the durability of the outer ring, especially against axial compressive forces.

   If the surfaces in question are designed with a plurality of self-contained grooves according to the drawing, a plastic, solidifying insulating material is used, which is between

 <Desc / Clms Page number 2>

 
 EMI2.1
 and 12 is assembled with insulation 13 in between. Loose insulating plates 7 and 8 isolate the side surfaces of the inner bearing ring from the closest metal surfaces of the Aehsennansches J4 and the clamping sleeve 15 when the bearing is mounted as a guide bearing, as shown in the drawing.



   The embodiment shown in FIG. 4 differs from that shown in FIG. 3 in the modified form of the insulation 13. The insulating plates 7 and 8 are here omitted as superfluous, in that the outer bearing ring 10 is firmly clamped in the housing
 EMI2.2
 it can be used for all kinds of ball or tube bearings.

 

Claims (1)

PATENT-ANSPRUCH: EMI2.3 PATENT CLAIM: EMI2.3
AT70960D 1913-07-22 1914-07-21 Ball or roller bearings with electrical insulation. AT70960B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE70960X 1913-07-22

Publications (1)

Publication Number Publication Date
AT70960B true AT70960B (en) 1916-01-25

Family

ID=20270404

Family Applications (1)

Application Number Title Priority Date Filing Date
AT70960D AT70960B (en) 1913-07-22 1914-07-21 Ball or roller bearings with electrical insulation.

Country Status (1)

Country Link
AT (1) AT70960B (en)

Similar Documents

Publication Publication Date Title
DE3926577A1 (en) VACUUM PUMP WITH A ROTOR AND ROTOR BEARINGS OPERATED WITH VACUUM
DE10259710A1 (en) Electrical machine
DE102016209627B4 (en) Structure for slip ring and brush of synchronous motor with wound rotor
EP2899855A1 (en) Electrically operated motor vehicle coolant pump
AT70960B (en) Ball or roller bearings with electrical insulation.
DE1488433C3 (en) Turbo generator with directly cooled windings
US1751780A (en) Bearing material for current-traversed bearings
DE10342791A1 (en) Electric machine with cooling
DE102006007434B4 (en) Electric machine with liquid metal bearings
EP3058640A1 (en) Rotor cap for electric generators
DE1205182B (en) Arrangement for guiding the cooling medium and supporting the excitation windings in the pole corners of the leg pole banks of electrical machines
WO2018046523A1 (en) Electrical machine comprising a structural unit and a cooling jacket
DE7006011U (en) ROLLER BEARINGS, IN PARTICULAR FOR THE MOUNTING OF THE STAR PINS OF UNIVERSAL JOINTS.
US1936744A (en) Electric motor construction
DE102013012341A1 (en) Rotor for an electric machine
DE855481C (en) Plain bearings for highly loaded internal combustion engines
AT134187B (en) Squirrel cage, in particular for electric impact tools.
US489505A (en) Journal-bearing for dynamo-electric machines
AT230152B (en) Bearing device for a rotating shaft
DE202004013642U1 (en) Shaft bearing for electrical machine, especially 3-phase motor, has aluminum metal bush with electrically conducting coating formed by anodized coating; metal bush can be anodized over entire surface
DE102018204520A1 (en) Electric machine
DE524357C (en) AC motor without stand housing with rotor supported on both sides
DE661919C (en) Housing part for electrical machines, in particular bearing frames for built-in motors, with metallic inserts provided to increase the mechanical strength
US3701571A (en) Bearing assembly
US262136A (en) Armature for dynamo-electric machines