Bearing Selection - Revision history

Kuraken: /* Internal Links */

2022-11-02T18:51:17Z

Internal Links

← Older revision		Revision as of 18:51, 2 November 2022
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	Consider making a bearing selection tool (as an assembly with multiple equation-driven configurations)in FreeCAD.		Consider making a bearing selection tool (as an assembly with multiple equation-driven configurations)in FreeCAD.

	=~~Internal Links~~=		=See also=
	[[~~Bearing Part Library~~]]		[[Machine elements]]

	[[Machine elements]]		[[Basic Calculations#Machine_elements\| Machine elements section under Basic calculations]]

	[[Bearing designation]]		[[Bearing designation]]

	[[OSE Bearing dimensioning calculator]]		[[OSE Bearing dimensioning calculator]]

			[[Bearing Part Library]]

	=External Links=		=External Links=

Kuraken at 20:05, 7 July 2022

2022-07-07T20:05:50Z

← Older revision		Revision as of 20:05, 7 July 2022
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	The instructions on this page are intended to guide the designer through the process of selecting bearings that are appropriate in type and size for its intended purpose and load condition.		The instructions on this page are intended to guide the designer through the process of selecting bearings that are appropriate in type and size for its intended purpose and load condition.

	The selection of bearings includes the following steps (which are described in further detail on this page:		The selection of bearings includes the following steps: (which are described in further detail on this page)

	Step 1) Define load condition		Step 1) Define load condition

Kuraken: /* Step 3) Select bearing arrangement */

2022-01-26T07:22:57Z

Step 3) Select bearing arrangement

← Older revision		Revision as of 07:22, 26 January 2022
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	This section is based on information listed on [http://www.SKF.com www.SKF.com] and in SKF handbooks.		This section is based on information listed on [http://www.SKF.com www.SKF.com] and in SKF handbooks.

			[[File:Bearing arrangement chart.png\|1000px]]

	=Step 4) Dimension bearing=		=Step 4) Dimension bearing=

Kuraken: /* Step 3) Select bearing arrangement */

2022-01-25T19:10:50Z

Step 3) Select bearing arrangement

Kuraken: /* Step 2) Select bearing type */

2022-01-25T19:04:17Z

Step 2) Select bearing type

← Older revision		Revision as of 19:04, 25 January 2022
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	=Step 2) Select bearing type=		=Step 2) Select bearing type=
	~~The~~ table below ~~shows level of suitability of different~~ bearing ~~types~~ for ~~different conditions~~.		Use the table below to select a bearing type that is appropriate for the load condition along with other attributes of your application.

	[[File:Bearing type selection.png]]		[[File:Bearing type selection.png]]

Kuraken: /* 4.4) Determine the value for p-constant */

2021-05-15T16:01:52Z

4.4) Determine the value for p-constant

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	==4.4) Determine the value for p-constant==		==4.4) Determine the value for p-constant==

	~~[[File:Bearing, point contact vs. line contact.png\|400px]]~~

	The value of the constant p will depend on the bearing type;		The value of the constant p will depend on the bearing type;
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	p = 4 for pure line contact		p = 4 for pure line contact

			[[File:Bearing, point contact vs. line contact.png\|400px]]

	==4.5) Input C- and n-values of different bearings into L10h-formula until L10h-value matches desired L10h-value==		==4.5) Input C- and n-values of different bearings into L10h-formula until L10h-value matches desired L10h-value==

Kuraken: /* 4.4) Determine the value for p-constant */

2021-05-15T16:01:31Z

4.4) Determine the value for p-constant

← Older revision		Revision as of 16:01, 15 May 2021
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	==4.4) Determine the value for p-constant==		==4.4) Determine the value for p-constant==

	[[File:Bearing, point contact vs. line contact.png~~\|right~~\|400px]]		[[File:Bearing, point contact vs. line contact.png\|400px]]

	The value of the constant p will depend on the bearing type;		The value of the constant p will depend on the bearing type;

Kuraken: /* 4.4) Determine the value for p-constant */

2021-05-15T16:01:04Z

4.4) Determine the value for p-constant

← Older revision		Revision as of 16:01, 15 May 2021
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	==4.4) Determine the value for p-constant==		==4.4) Determine the value for p-constant==

			[[File:Bearing, point contact vs. line contact.png\|right\|400px]]

	The value of the constant p will depend on the bearing type;		The value of the constant p will depend on the bearing type;

Kuraken: /* 4.4) Determine the value for p-constant */

2021-05-11T19:17:44Z

4.4) Determine the value for p-constant

← Older revision		Revision as of 19:17, 11 May 2021
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	p = 3 for ball bearings		p = 3 for ball bearings

	p = 1/3 for roller bearings		p = 10/3 for roller bearings

	p = 4 for pure line contact		p = 4 for pure line contact



	==4.5) Input C- and n-values of different bearings into L10h-formula until L10h-value matches desired L10h-value==		==4.5) Input C- and n-values of different bearings into L10h-formula until L10h-value matches desired L10h-value==

Kuraken at 19:00, 11 May 2021

2021-05-11T19:00:37Z

← Older revision		Revision as of 19:00, 11 May 2021
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	The instructions on this page are intended to guide the designer through the process of selecting bearings that are appropriate in type and size for its intended purpose and load condition.		The instructions on this page are intended to guide the designer through the process of selecting bearings that are appropriate in type and size for its intended purpose and load condition.

	The selection of bearings includes the following steps (which are described in further detail on this page):		The selection of bearings includes the following steps (which are described in further detail on this page:

	Step 1) Define load condition		Step 1) Define load condition

← Older revision		Revision as of 19:10, 25 January 2022
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	Axial loads acting in both directions can be accommodated, but only by one bearing or bearing set in each direction.		Axial loads acting in both directions can be accommodated, but only by one bearing or bearing set in each direction.
	Bearings mounted back-to-back provide a relatively rigid bearing arrangement.		Bearings mounted back-to-back provide a relatively rigid bearing arrangement.
	The wide span between bearing effective centres makes this arrangement particularly well suited to support moment loads."		The wide span between bearing effective centres makes this arrangement particularly well suited to support moment loads.

	'''Face-to-face arrangement'''		'''Face-to-face arrangement'''
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	Axial loads acting in both directions can be accommodated, but only by one bearing or bearing set in each direction.		Axial loads acting in both directions can be accommodated, but only by one bearing or bearing set in each direction.
	The shorter span between effective bearing centres makes face-to-face arrangements less suitable to		The shorter span between effective bearing centres makes face-to-face arrangements less suitable to
	support moment loads compared to bearings in a back-to-back arrangement."		support moment loads compared to bearings in a back-to-back arrangement.

	'''Tandem arrangement'''		'''Tandem arrangement'''
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	In a tandem arrangement, the load lines are parallel so that radial and axial loads are shared.		In a tandem arrangement, the load lines are parallel so that radial and axial loads are shared.
	The bearing set can only accommodate axial loads acting in one direction.		The bearing set can only accommodate axial loads acting in one direction.
	If axial loads act in both directions, or if combined loads are present, additional bearing(s) adjusted against the tandem arrangement must be added."		If axial loads act in both directions, or if combined loads are present, additional bearing(s) adjusted against the tandem arrangement must be added.

	'''Examples'''		'''Examples'''
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	misalignment than back-to-back bearing arrangements.		misalignment than back-to-back bearing arrangements.
	Combinations of tandem arrangements with back-to-back or face-to-face arrangements are usually selected to maximize the stiffness or load carrying		Combinations of tandem arrangements with back-to-back or face-to-face arrangements are usually selected to maximize the stiffness or load carrying
	capacity of a bearing set in a particular direction. This is the case, for example, when extended, preloaded, vertical or overhung screw drives must be supported."		capacity of a bearing set in a particular direction. This is the case, for example, when extended, preloaded, vertical or overhung screw drives must be supported.

	This section is based on information listed on [http://www.SKF.com www.SKF.com] and in SKF handbooks.		This section is based on information listed on [http://www.SKF.com www.SKF.com] and in SKF handbooks.