Bearing (mechanical) - Revision history

115.246.2.11 at 07:10, 11 February 2022

2022-02-11T07:10:25Z

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2022-02-11T06:25:54Z

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Admin: /* Comparison of Types */

2021-04-18T19:03:07Z

Comparison of Types

Admin at 18:58, 18 April 2021

2021-04-18T18:58:13Z

Admin: 1 revision imported: Mitul Imported from Wikipedia

2021-04-11T19:42:44Z

1 revision imported: Mitul Imported from Wikipedia

setup>Danbloch: undo edit by 117.98.174.128; original was correct

2021-04-06T19:15:56Z

undo edit by 117.98.174.128; original was correct

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← Older revision	Revision as of 07:10, 11 February 2022
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	+
	+	= Bearing Standards =
	+
	+	=== Bearing Standards ===
	+	ABMA/ANSI/ISO: A summary of each organization as they relate to the development of bearing standards.
	+
	+	=== ABMA: American Bearing Manufacturers Association ===
	+	The American Bearing Manufacturers Association (ABMA), formerly the Anti-Friction Bearing Manufacturers Association, plays an important leadership role in an important industry. ABMA is the only U.S. trade organization representing manufacturers of bearings and bearing components. Through its headquarters in Washington, D.C., the ABMA defines national and international standards for bearing products; compiles market statistics; offers targeted educational programs; conducts industry conferences; and maintains contacts with elected officials and representatives from key government
	+
	+	agencies.
	+
	+	Membership in the ABMA is open to any firm in which a substantial part of its business includes the manufacture, in the United States, of bearings and major components used in those products.
	+
	+	=== ABMA: National and International Standards ===
	+	ABMA cooperates with the American National Standards Institute (ANSI) in the development of bearing related standards. ABMA is an accredited standards developer through ANSI. ABMA develops industry standards, which are submitted to ANSI for approval as American National Standards. ABMA, as many other standards developers, have begun to adopt ISO standards as ANSI standards. Once adopted, they become ABMA/ANSI/ISO standards.
	+
	+	The ABMA is also responsible for developing and conveying the United States’ position on all proposals for the ISO’s Technical Committee 4 (TC4) concerning bearings.
	+
	+	The U.S. Technical Advisory Committee (TAG) reviews all materials and submits a vote to ANSI which, in turn, is sent to the Secretariat of TC4
	+
	+	ABMA is the Secretariat of:
	+
	+	* The ANSI Accredited National Standards Committee on Rolling Elements Bearings which is responsible for approval of bearing standards.
	+	* Three subcommittees of ISO’s Technical Committee 4 on Rolling Bearings and Spherical Plane Bearings, SC6, SC9, SC11.
	+	* The subcommittee on airframe bearings for ISO Technical Committee 20
	+
	+	ABMA has published a complete set of bearing standards for ball and roller bearings and balls. More information on
	+
	+	ABMA and their standards can be found at www.abma-dc.org
	+
	+	=== ANSI: American National Standards Institute ===
	+	Headquartered in Washington, D.C., ANSI is a private, non-profit organization that administers and coordinates the
	+
	+	U.S. voluntary standardization and conformity assessment system. The institute’s mission is to enhance both the
	+
	+	global competitiveness of U.S. business and the U.S. quality of life by promoting and facilitating voluntary consensus
	+
	+	standards and conformity assessment systems, and safeguarding their integrity.
	+
	+	=== ANSI: National Standardization ===
	+	ANSI does not itself develop American National Standards; rather it facilitates the development by establishing
	+
	+	consensus among qualifying groups. Today there are approximately 14,650 American National Standards.
	+
	+	=== ANSI: International Standardization ===
	+	ANSI promotes the use of U.S. standards internationally, advocates U.S. policy and technical positions in international
	+
	+	and regional standards organizations. ANSI is the sole U.S. representative and dues paying member of the ISO.
	+
	+	ANSI was a founding member of the ISO and plays an active role in its governance. ANSI participates in almost the
	+
	+	entire technical program of the ISO (78%).
	+
	+	In many instances, U.S. standards are taken forward, through ANSI, to the ISO where they are adopted as international
	+
	+	standards.
	+
	+	=== ISO: International Organization for Standardization ===
	+	The ISO is a worldwide federation of national standards bodies from some 130 countries. The ISO’s mission is to
	+
	+	promote the development of standardization and related activities in the world with a view to facilitating the international
	+
	+	exchange of goods and services, and to developing cooperation in the spheres of intellectual, scientific, technological
	+
	+	and economic activity.
	+
	+	=== ISO: Who does the work? ===
	+	The technical work of ISO is highly decentralized, carried out in a hierarchy of some 2,850 technical committees and
	+
	+	working groups. The major responsibility for administering a standards committee is accepted by one of the national
	+
	+	standards bodies that make up the ISO membership. ANSI is one such member.
	+
	+	The technical committee for bearings is “TC 4 Roller Bearings.” The scope of the committee is the standardization
	+
	+	of all types and all sizes of bearing elements based on the principle of rolling motion, their accessories, application and
	+
	+	identification and standardization of spherical plain bearings.
	+
	+	One of the standards committees SC’s for TC 4 is “TC4/SC 9 Tapered rolling bearings.” The Secretariat for this
	+
	+	committee is ANSI. The number of published ISO standards under the direct responsibility of the SC Secretariat is 4.
	+
	+	One of them, for example, is ISO 10317:1992 Rolling bearings – Metric tapered roller bearings – Designation system.

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 |}
-= Comparison of Types =
+= Comparison of Bearing Types & their Characteristics =
 {| class="wikitable"
 ! rowspan="2" |Characteristic
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 |Excellent
 |}
 ==See also==

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 {{Short description|Mechanism to constrain relative movement to the desired motion and reduce friction}}
 {{Use dmy dates|date=June 2013}}
-[[File:Ball Bearing2.jpg|thumb|[[Ball bearing]]]]
+[[File:Ball Bearing2.jpg|thumb|[[Ball bearing]]|link=Special:FilePath/Ball_Bearing2.jpg]]
 A '''bearing''' is a [[machine element]] that constrains relative motion to only the desired motion, and reduces [[friction]] between [[moving parts]]. The design of the bearing may, for example, provide for free [[line (geometry)|linear]] movement of the moving part or for free [[rotation around a fixed axis]]; or, it may ''prevent'' a motion by controlling the [[vector (mathematics and physics)|vector]]s of [[normal force]]s that bear on the moving parts.  Most bearings facilitate the desired motion by minimizing friction. Bearings are classified broadly according to the type of operation, the motions allowed, or to the directions of the loads (forces) applied to the parts.
@@ Line 10: / Line 10: @@
 ==History==
-[[Image:Tapered steering head bearings.jpg|thumb|Tapered roller bearing]]
+[[Image:Tapered steering head bearings.jpg|thumb|Tapered roller bearing|link=Special:FilePath/Tapered_steering_head_bearings.jpg]]
-[[Image:Шарикоподшипники.jpg|thumb|Drawing of [[Leonardo da Vinci]] (1452–1519) ''Study of a ball bearing'']]
+[[Image:Шарикоподшипники.jpg|thumb|Drawing of [[Leonardo da Vinci]] (1452–1519) ''Study of a ball bearing''|link=Special:FilePath/Шарикоподшипники.jpg]]
 The invention of the rolling bearing, in the form of wooden rollers supporting, or bearing, an object being moved is of great antiquity and may predate the invention of a [[wheel]] rotating on a plain bearing used for transportation.
@@ Line 37: / Line 37: @@
 Even basic materials can have good durability. As examples, wooden bearings can still be seen today in old clocks or in water mills where the water provides cooling and lubrication.
-[[Image:Early Timken roller bearing.jpg|thumb|Early [[Timken Roller Bearing Company|Timken]] [[tapered roller bearing]] with notched rollers]]
+[[Image:Early Timken roller bearing.jpg|thumb|Early [[Timken Roller Bearing Company|Timken]] [[tapered roller bearing]] with notched rollers|link=Special:FilePath/Early_Timken_roller_bearing.jpg]]
 The first [[patent]] for a radial style ball bearing was awarded to [[Jules Suriray]], a Parisian bicycle mechanic, on 3 August 1869. The bearings were then fitted to the winning bicycle ridden by [[James Moore (cyclist)|James Moore]] in the world's first bicycle road race, [[Paris–Rouen (cycle race)|Paris-Rouen]], in November 1869.<ref name="ibike%2Eorg">{{cite web|url=http://www.ibike.org/library/history-timeline.htm |title=Bicycle History, Chronology of the Growth of Bicycling and the Development of Bicycle Technology by David Mozer |publisher=Ibike.org |access-date=2013-09-30}}</ref>
 In 1883, [[Friedrich Fischer]], founder of [[Schaeffler Group|FAG]], developed an approach for milling and grinding balls of equal size and exact roundness by means of a suitable production machine and formed the foundation for creation of an independent bearing industry.
-[[File:Wingquist patent PRV 25406 1907b.png|alt= Wingquist original patent|thumb|Wingquist original patent of self-aligning ball bearing]]
+[[File:Wingquist patent PRV 25406 1907b.png|thumb|Wingquist original patent of self-aligning ball bearing|link=Special:FilePath/Wingquist_patent_PRV_25406_1907b.png]]
 The modern, self-aligning design of ball bearing is attributed to [[Sven Wingquist]] of the [[SKF]] ball-bearing manufacturer in 1907, when he was awarded Swedish patent No. 25406 on its design.
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 ==Types==
-[[Image:BallBearing.gif|thumb|Animation of ball bearing (Ideal figure without a cage). The inner ring rotates and the outer ring is stationary.]]
+[[Image:BallBearing.gif|thumb|Animation of ball bearing (Ideal figure without a cage). The inner ring rotates and the outer ring is stationary.|link=Special:FilePath/BallBearing.gif]]
 There are at least 6 common types of bearing,<ref>{{cite web |title=6 Most Popular Types of Mechanical Bearings |url=https://www.craftechind.com/6-most-popular-types-of-mechanical-bearings/ |website=craftechind.com}}</ref> each of which operates on different principles:
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 |-
 | colspan=7 | <sup>†</sup>Stiffness is the amount that the gap varies when the load on the bearing changes, it is distinct from the [[friction]] of the bearing.
 |}

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