DE2242432A1 - AXIAL CAGE FOR CYLINDRICAL ROLLER BEARING - Google Patents

AXIAL CAGE FOR CYLINDRICAL ROLLER BEARING

Info

Publication number
DE2242432A1
DE2242432A1 DE2242432A DE2242432A DE2242432A1 DE 2242432 A1 DE2242432 A1 DE 2242432A1 DE 2242432 A DE2242432 A DE 2242432A DE 2242432 A DE2242432 A DE 2242432A DE 2242432 A1 DE2242432 A1 DE 2242432A1
Authority
DE
Germany
Prior art keywords
pockets
cage
webs
rolling elements
axial cage
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
DE2242432A
Other languages
German (de)
Other versions
DE2242432C2 (en
Inventor
Gerhard Dipl Ing Hornschuh
Rudolf Jahn
Juergen Rabe
Arpad Dipl Ing Toth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INA Waelzlager Schaeffler OHG
Original Assignee
Industriewerk Schaeffler OHG
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 Industriewerk Schaeffler OHG filed Critical Industriewerk Schaeffler OHG
Priority to DE2242432A priority Critical patent/DE2242432C2/en
Priority to US38747673 priority patent/US3876267A/en
Priority to FR7329986A priority patent/FR2198575A5/fr
Priority to JP9426273A priority patent/JPS562207B2/ja
Priority to IT2828673A priority patent/IT993077B/en
Priority to GB4042173A priority patent/GB1414216A/en
Priority to BR6613/73A priority patent/BR7306613D0/en
Priority to ES1973194371U priority patent/ES194371Y/en
Publication of DE2242432A1 publication Critical patent/DE2242432A1/en
Application granted granted Critical
Publication of DE2242432C2 publication Critical patent/DE2242432C2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
    • F16C19/305—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly consisting of rollers held in a cage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4641—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages comprising two annular parts joined together
    • F16C33/4652—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages comprising two annular parts joined together made from plastic, e.g. two injection moulded parts joined by a snap fit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/04—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)

Description

Axialkäfig fUr zylindrische zkdrper Die Erfindung betrifft einen Axialkäfig für zylindrische Wälzkörper, der aus zwei konzentrisch ineinander angeordneten Ringborden besteht, die durch gleichmäßig über den Umfang verteilte Stege miteinander verbunden sind, Welche radial verlaufende Taschen fUr die Aufnahme der Wälzkörper begrenzen.Axial cage for cylindrical zkdrper The invention relates to an axial cage for cylindrical rolling elements, which consists of two concentrically arranged ring ribs consists, which are connected to one another by webs evenly distributed over the circumference are, which limit the radial pockets for receiving the rolling elements.

Um die Tragfähigkeit derartiger Axialkäfigezu erhöhen, ist man bestrebt, solche Käfig. konstruktiv so auszubilden, daß eine größtmögliche Anzahl an Wälzkörpern darin untergebracht werden kann. Diesem Bestreben sind bei einem Käfig der angegebenen Gattung dadurch-Grenzengesetzt, daß man die Taschen einander nur soweit annähern kann, daß die sie begrenzenden Stege in ihrem radial innersten Bereich noch einen ausreichenden Materialquerschnitt aufweisen, um eine sichere Verbindung mit dem inneren Ringbord zu gewährleisten.In order to increase the load-bearing capacity of such axial cages, efforts are made to such cage. to train constructively so that the largest possible number of rolling elements can be accommodated in it. This endeavor are specified in a cage This category is limited by the fact that the pockets are only so close to each other can that the webs delimiting them in their radially innermost area still have one have sufficient material cross-section to ensure a secure connection with the to ensure inner ring rim.

Andererseits hat man bereits vorgeschlagen, derartige Axialkäfige in der Form von Kammkäfigen auszubilden, wobei von einem äußeren Ringbord sich radial nach innen Stege erstrecken, die die Taschen für die Aufnahme der Wälzkörper begrenzen. Bei Anwendung solcher frei auskragender Käfigstege kann man die Wälzkörpertaschen einander soweit annähern, daß sich die Wälzkörper in ihrem radial innersten Bereich gegenseitig berühren.On the other hand, it has already been proposed such axial cages in the form of comb cages, with an outer ring rim extending radially inwardly extending webs that limit the pockets for receiving the rolling elements. When using such freely cantilevered cage bars, the rolling element pockets can be used approach each other so far that the rolling elements are in their radially innermost area touch each other.

Damit ermöglichen es diese Käfige, eine maximale Wälzkörperanzahl unterzubringen. Dieser Vorteil wird Jedoch erkauft durch einen Käfig mit weitaus geringerer Steifigkeit, was in manchen Fällen zu unzulässigen Verformungen fUhren kann.These cages thus enable a maximum number of rolling elements accommodate. However, this advantage is paid for by a cage with far lower stiffness, which is in in some cases to impermissible deformations can lead.

Die Anwendbarkeit derartiger Käfige ist also begrenzt.The applicability of such cages is therefore limited.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Axialkäfig, der aus zwei konzentrisch ineinander angeördneten Ringborden und diese verbindenden Stegen besteht, eine Walzkdrperanzahl unterzubringen, die der bei den oben genannten Kammkäfigen entspricht.The invention is based on the object in an axial cage that of two concentrically arranged ring ribs and connecting them There is webs to accommodate a number of rolling elements that of the above Corresponds to comb cages.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß die Taschen dieses Käfigs so nahe beieinander angeordnet sind, daß sie sich in ihrem radial innersten Bereich gegenseitig berühren, wobei die sie begrenzenden Stege in diesem Bereich in ihrer Mitte mit die Taschen verbindenden Ausnehmungen versehen sind. Durch diese Ausbildung ist es möglich, ebenso wie bei dem oben beschriebenen bekannten Axial- Kammkäfig die Wälzkörper in Umfangsrichtung so nahe aneinanderzurücken, daß sie sich in ihrem radial innersten Bereich gegenseitig berühren. Dieser geringste Abstand zwischen benachbarten Wälzkörpern ist gegeben im Bereich der die Taschen verbindenden Ausnehmungen, die sich in der Mitte der Käfigstege befinden. In den auf beiden Seiten sich an die Ausnehmungen anschließenden Bereichen der Käfigstege in Richtung auf die Stirnseiten des Käfigs hin, verbleibt den Stegen ein ausreichend großer Querschnitt, an dem die Stege mit dem inneren Ringbord verbunden sind. Es wird also durch diese konstruktive Ausbildung erreicht, daß die Wälzkörper bis auf den kleinsten gegenseitigen Abstand - im Extremfall nämlich bis zur gegenseitigen Berührung - aneinandergerückt werden können, ohne dabei den Vorteil aufzugeben, die Käfigstege an ihren radial innersten Enden mit einem Ringbord zu verbinden und dadurch einen Käfig hoher Steifigkeit zu erzielen.According to the invention, this object is achieved in that the pockets this cage are arranged so close together that they are radially in their touch each other's innermost area, with the webs delimiting them in this Area are provided in their middle with the pockets connecting recesses. This design makes it possible, as in the case of the known one described above Axial comb cage to move the rolling elements so close to one another in the circumferential direction that they touch each other in their radially innermost area. This least one The distance between adjacent rolling elements is given in the area of the pockets connecting recesses, which are located in the middle of the cage bars. In the areas of the cage bars adjoining the recesses on both sides in the direction of the end faces of the cage, the webs remain a sufficient large cross-section where the webs are connected to the inner ring rim. It is thus achieved by this structural training that the rolling elements up to the smallest mutual distance - in extreme cases up to the mutual Touch - can be moved closer together without giving up the advantage of to connect the cage bars at their radially innermost ends with an annular rim and thereby achieving a cage of high rigidity.

Die Herstellung eines derartigen Käfigs kann auf åede praktisch denkbare Art erfolgen. Eine besonders zweckmäßige Herstellungsweise ergibt sich dann, wenn der Käfig aus zwei identischen Hälften besteht, die in der durch die Wälzkörperachsen verlaufenden Radialebene aneinandergrenzen. Bei einer solchen Ausbildung ist es nämlich in einfachster Weise möglich, die Ausformung der die Taschen begrenzenden Stegflächen mitsamt der Ausnehmungen im Bereich der radial inneren Stegenden vorzunehmen und zwar unabhängig davon, ob diese Käfighälften durch spanabhebende Bearbeitungsgänge hergestellt werden oder ob man sie durch Pressen, Schmieden, Spritzgießen oder dgl. herstellt.The manufacture of such a cage can be practically conceivable in any way Kind of done. A particularly expedient production method results when the cage consists of two identical halves, which are in the one through the rolling element axes adjoining extending radial plane. With such a training it is namely, in the simplest possible way, the shaping of the pockets delimiting Make web surfaces together with the recesses in the area of the radially inner web ends regardless of whether these cage halves are made by machining operations are manufactured or whether they are by pressing, forging, injection molding or the like. manufactures.

Bei der Herstellung des Käfigs aus zwei Hälften ist es besonders zweckmäßig, diese in an sich bekannter Weise durch Spritzen aus Kunststoff herzustellen und de beiden Hälften dann durch Ultraschallschweißung miteinander zu verbinden.When producing the cage from two halves, it is particularly useful to to produce these in a known manner by injection molding from plastic and The two halves are then connected to one another by ultrasonic welding.

In den Zeichnungen sind Ausführungsbeispiele der beschriebenen Erfindung dargestellt. Es zeigen: Fig. 1 einen erfindungsgemäßen Käfig in.perspektivischer Ansicht und Fig. 2 und 3 Schnitte nach Linie II/III-II/III der Figur Der in Figur 1 dargestellte Axialkäfig besteht aus dem ä'ußei'en Ringbord 1, dem inneren Ringbord 2 und den diese beiden Ringborde miteinander verbindenden, keilförmigen Stegen 3. Diese gleichmäßig über den Umfang des Käfigs verteilten Stege 3 begrenzen die für die Aufnahme zylindrischer Wälzkörper dienenden Taschen 4. Die seitlichen Begrenzungswände 5 der Taschen 4 sind entsprechend der Außenkontur der zylindrischen Wälzkörper als Teilzylinderflächen ausgebildet.In the drawings are exemplary embodiments of the invention described shown. 1 shows a cage according to the invention in perspective View and Fig. 2 and 3 sections along line II / III-II / III of the figure The in Figure 1 shown axial cage consists of the outer ring rim 1, the inner ring rim 2 and the wedge-shaped webs 3 connecting these two ring rims to one another. These webs 3 distributed evenly over the circumference of the cage limit the for the inclusion of cylindrical rolling elements serving pockets 4. The lateral boundary walls 5 of the pockets 4 are corresponding to the outer contour of the cylindrical Rolling bodies designed as partial cylinder surfaces.

In ihren radial innersten Bereichen weisen die Stege 3 in ihrer Mitte Ausnehmungen 6 auf, die benachbarte Taschen 4 miteinander verbinden. Im Bereich dieser Ausnehmungen 6 können die in die Taschen eingebrachten Wälzkörper sich im Extremfall gegenseitig berühren.In their radially innermost areas, the webs 3 point in their center Recesses 6 which connect adjacent pockets 4 to one another. In the area of these recesses 6, the rolling elements introduced into the pockets can be located in the Extreme case touching each other.

Die Figur 2, die einen Schnitt nach Linie II/III-II/III der Figur 1 darstellt, läßt in der rechten Seite noch einmal deutlich die Ausnehmung 6 im radial innersten Bereich der Käfigstege 3 erkennen. Zur Verdeutlichung sind in dieser Figur ebenso wie in der folgenden in jede Tasche 4 zwei Zylinderrollen 7 eingezeichnet.Figure 2, which is a section along line II / III-II / III of the figure 1 shows the recess 6 in the right side again clearly recognize the radially innermost area of the cage webs 3. For clarification are in this Figure as well as in the following two cylindrical rollers 7 drawn in each pocket 4.

Figur 3 unterscheidet sich von der Figur 2 lediglich dadurch, daß der Käfig aus zwei identischen Hälften 8 besteht, die in der durch die Wälzkörperachsen 9 verlaufenden Radialebene aneinandergrenzen und in geeigneter Weise miteinander verbunden sind.Figure 3 differs from Figure 2 only in that the cage consists of two identical halves 8, which in the through the rolling element axes 9 extending radial plane adjoin one another and in a suitable manner with one another are connected.

Claims (3)

Ansprüche Expectations .Izkörper, bestebend aus n Axialkäfig für zylindrische Wälzkörper, bestehend aus zwei konzentrisch ineinander angeordneten Ringborden, die durch gleichmäßig über den Umfang verteilte Stege miteinander verbunden sind, die radial verlaufende Taschen für die Aufnahme der Wälzkörper begrenzen, dadurch gekennzeichnt,+daß die Taschen (4) so nahe beieinander angeordnet sind, daß sie sich in ihrem radial innersten Bereich gegenseitig berühren, wobei die sie begrenzenden Stege (3) in diesem Bereich in ihrer Mitte mit die Taschen (4) verbindenden Ausnehmungen (6) versehen sind. .Izbody, consisting of n axial cage for cylindrical rolling elements, consisting of two concentrically arranged ring ribs, which through evenly webs distributed over the circumference are connected to one another, the radially extending Limit pockets for receiving the rolling elements, marked + that the Pockets (4) are arranged so close together that they are in their radially innermost Area touch each other, with the webs (3) delimiting them in this area are provided in their middle with the pockets (4) connecting recesses (6). 2. Axialkäfig nach Anspruch 1, dadurch gekennzeichnet, daß er aus zwei identischen Hälften (8) besteht, die in der durch die Wälzkörperachsen (9) verlaufenden Radialebene aneinandergrenzen. 2. Axial cage according to claim 1, characterized in that it consists of consists of two identical halves (8), which in the one formed by the rolling element axles (9) adjoining extending radial plane. 3. Axialkäfig nach Anspruch 2, dadurch gekennzeichnet, daß die beiden Hälften in an sich bekannter Weise durch Spritzen aus Kunststoff hergestellt und durch Ultraschallschweißung miteinander verbunden sind. 3. Axial cage according to claim 2, characterized in that the two Halves made in a known manner by injection molding from plastic and are connected to one another by ultrasonic welding.
DE2242432A 1972-08-29 1972-08-29 Axial cage for cylindrical rolling elements Expired DE2242432C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE2242432A DE2242432C2 (en) 1972-08-29 1972-08-29 Axial cage for cylindrical rolling elements
US38747673 US3876267A (en) 1972-08-29 1973-08-10 Axial cage for cylindrical rollers
FR7329986A FR2198575A5 (en) 1972-08-29 1973-08-17
JP9426273A JPS562207B2 (en) 1972-08-29 1973-08-22
IT2828673A IT993077B (en) 1972-08-29 1973-08-28 AXIAL CAGE FOR CYLINDRICAL ROLL BODIES AND DEVICE FOR ITS MANUFACTURE
GB4042173A GB1414216A (en) 1972-08-29 1973-08-28 Cage for cylindrical roller axial-thrust bearings and apparatus for its production
BR6613/73A BR7306613D0 (en) 1972-08-29 1973-08-28 IMPROVEMENTS IN AXIAL CAGE FOR CYLINDRICAL BEARING BODIES, AND A DEVICE FOR ITS MANUFACTURING
ES1973194371U ES194371Y (en) 1972-08-29 1973-08-29 AXILE CAGE FOR CYLINDRICAL BEARING BODIES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2242432A DE2242432C2 (en) 1972-08-29 1972-08-29 Axial cage for cylindrical rolling elements

Publications (2)

Publication Number Publication Date
DE2242432A1 true DE2242432A1 (en) 1974-03-07
DE2242432C2 DE2242432C2 (en) 1982-04-08

Family

ID=5854872

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2242432A Expired DE2242432C2 (en) 1972-08-29 1972-08-29 Axial cage for cylindrical rolling elements

Country Status (3)

Country Link
BR (1) BR7306613D0 (en)
DE (1) DE2242432C2 (en)
ES (1) ES194371Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014219728A1 (en) * 2014-09-29 2016-03-31 Aktiebolaget Skf Cage for axial roller bearings, axial roller bearings and manufacturing processes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824279C1 (en) * 1988-07-16 1989-06-22 Hoesch Ag, 4600 Dortmund, De

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1575501A1 (en) * 1966-02-11 1970-01-02 Ina Roulements Rolling bearing with a cage with numerous openings
DE1959002A1 (en) * 1969-11-25 1971-07-08 Weserwerft Schiffs U Maschb Gm Two-part profile rudder for ships

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1575501A1 (en) * 1966-02-11 1970-01-02 Ina Roulements Rolling bearing with a cage with numerous openings
DE1959002A1 (en) * 1969-11-25 1971-07-08 Weserwerft Schiffs U Maschb Gm Two-part profile rudder for ships

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014219728A1 (en) * 2014-09-29 2016-03-31 Aktiebolaget Skf Cage for axial roller bearings, axial roller bearings and manufacturing processes

Also Published As

Publication number Publication date
ES194371Y (en) 1975-03-16
ES194371U (en) 1974-12-01
BR7306613D0 (en) 1974-06-27
DE2242432C2 (en) 1982-04-08

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