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ISO/TR 14521:2010

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

View Superseded by
withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Gears Calculation of load capacity of wormgears
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

07-16-2021

Language(s)

French, English

Published date

11-11-2010

Publisher

International Organization for Standardization

ISO/TR 14521:2010 specifies equations for calculating the load capacity of cylindrical worm gears and covers load ratings associated with wear, pitting, worm deflection, tooth breakage and temperature. Scuffing and other failure modes are not covered by ISO/TR 14521:2010.

The load rating and design procedures are valid for sliding velocities over tooth surfaces of up to 25 m/s and contact ratios equal to or greater than 2,1. For wear, sliding velocities over tooth surfaces are not below 0,1 m/s.

The rules and recommendations for the dimensioning, lubricants or materials selected by ISO/TR 14521:2010 only apply to centre distances of 50 mm and larger. For centre distances below 50 mm, method A applies.

The choice of appropriate methods of calculation requires knowledge and experience. ISO/TR 14521:2010 is intended for use by experienced gear designers who are able to make informed judgements concerning factors. It is not intended for use by engineers who lack the necessary experience.

The geometry of worm gears is complex, therefore the user of ISO/TR 14521:2010 is encouraged to make sure that a valid working geometry has been established.

DevelopmentNote
Supersedes ISO/DIS 14521. (01/2012)
DocumentType
Technical Report
Pages
92
PublisherName
International Organization for Standardization
Status
Withdrawn
SupersededBy

Standards Relationship
FD ISO/TR 14521 : 2011 FD Identical
NEN NPR ISO/TR 14521 : 2010 Identical
PD ISO/TR 14521:2010 Identical

11/30235014 DC : 0 BS EN 13135 - CRANES - SAFETY - DESIGN - REQUIREMENTS FOR EQUIPMENT
PD ISO/TR 10828:2015 Worm gears. Worm profiles and gear mesh geometry
EN 13135:2013+A1:2018 Cranes - Safety - Design - Requirements for equipment
ISO/TR 10828:2015 Worm gears Worm profiles and gear mesh geometry
BS EN 13135 : 2013 CRANES - SAFETY - DESIGN - REQUIREMENTS FOR EQUIPMENT
I.S. EN 13135:2013 CRANES - SAFETY - DESIGN - REQUIREMENTS FOR EQUIPMENT
UNE-EN 13135:2013 Cranes - Safety - Design - Requirements for equipment
DIN EN 13135:2013-05 CRANES - SAFETY - DESIGN - REQUIREMENTS FOR EQUIPMENT

DIN 1709:1981-11 COPPER ZINC ALLOY CASTINGS (BRASS AND SPECIAL BRASS CASTINGS)
DIN 1714:1981-11 COPPER-ALUMINIUM CASTING ALLOYS (CAST ALUMINIUM BRONZE) - CASTINGS
ISO/TR 10495:1997 Cylindrical gears Calculation of service life under variable loads Conditions for cylindrical gears according to ISO 6336
DIN 1693 : 1961
ISO 701:1998 International gear notation Symbols for geometrical data
ISO 1122-2:1999 Vocabulary of gear terms Part 2: Definitions related to worm gear geometry
ISO 6743-6:1990 Lubricants, industrial oils and related products (class L) Classification Part 6: Family C (Gears)
ISO 10347:1999 Worm gears Geometry of worms Name plates for worm gear units centre distances, information to be supplied to gear manufacturer by the purchaser
DIN 3974-2:1995-11 ACCURACY OF WORMS AND WORM GEARS - PART 2: TOLERANCES FOR INDIVIDUAL ERRORS
DIN 1691:1985-05 FLAKE GRAPHITE CAST IRON (GREY CAST IRON) - PROPERTIES
ISO/TR 10828:2015 Worm gears Worm profiles and gear mesh geometry
BS 721-2:1983 Specification for worm gearing Metric units
DIN 3974-1:1995-11 ACCURACY OF WORMS AND WORM GEARS - PART 1: GENERAL BASES
DIN 1705:1981-11 COPPER TIN AND COPPER TIN ZINC CASTING ALLOYS (CAST TIN BRONZE AND GUN METAL) - CASTINGS
EN 1563:2011 Founding - Spheroidal graphite cast irons
ISO 6336-6:2006 Calculation of load capacity of spur and helical gears Part 6: Calculation of service life under variable load
ISO/TR 10064-4:1998 Code of inspection practice Part 4: Recommendations relative to surface texture and tooth contact pattern checking
EN 1982:2017 Copper and copper alloys - Ingots and castings
EN 1561:2011 Founding - Grey cast irons

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Hardcopy - French
PDF - French
PDF 3 Users - French
PDF 5 Users - French
PDF 9 Users - French
Hardcopy - English
PDF - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
Hardcopy - French
PDF - French
PDF 3 Users - French
PDF 5 Users - French
PDF 9 Users - French
Hardcopy - English
PDF - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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