21.120.01

Shafts and couplings in general

21.120.10

Shafts

21.120.20

Couplings

21.120.30

Keys and keyways, splines

21.120.40

Balancing and balancing machines

21.120.99

Other standards related to shafts and couplings
DIN 3761-22:1980-07

DIN 3761-22:1980-07

Superseded Historical

Rotary-shaft lip type seals for automobils; test, measuring requirements and -instruments

€24.39

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DIN 3761-27:1981-02

DIN 3761-27:1981-02

Superseded Historical

Rotary shaft lip typ seals for automobils; test; evaluation of leakage

€34.30

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DIN ISO 21940-14:2026-03

DIN ISO 21940-14:2026-03

Active Most Recent

Mechanical vibration - Rotor balancing - Part 14: Procedures for assessing balance errors (ISO/DIS 21940-14:2025); Text in German and English

€91.03

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ISO 21940-12:2016 (R2025)

ISO 21940-12:2016 (R2025)

Active Most Recent

Mechanical vibration — Rotor balancing Part 12: Procedures and tolerances for rotors with flexible behaviour

€183.00

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ISO 21940-14:2012 (R2017)

ISO 21940-14:2012 (R2017)

Active Most Recent

Mechanical vibration — Rotor balancing Part 14: Procedures for assessing balance errors

€115.00

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ISO 21940-31:2013 (R2019)

ISO 21940-31:2013 (R2019)

Active Most Recent

Mechanical vibration — Rotor balancing Part 31: Susceptibility and sensitivity of machines to unbalance

€155.00

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ISO 21940-11:2016 (R2021)

ISO 21940-11:2016 (R2021)

Active Most Recent

Mechanical vibration — Rotor balancing Part 11: Procedures and tolerances for rotors with rigid behaviour

€183.00

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ISO 21940-23:2012 (R2023)

ISO 21940-23:2012 (R2023)

Active Most Recent

Mechanical vibration — Rotor balancing Part 23: Enclosures and other protective measures for the measuring station of balancing machines

€155.00

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ISO 21940-13:2012 (R2023)

ISO 21940-13:2012 (R2023)

Active Most Recent

Mechanical vibration — Rotor balancing Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors

€155.00

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ISO 21940-32:2012 (R2023)

ISO 21940-32:2012 (R2023)

Active Most Recent

Mechanical vibration — Rotor balancing Part 32: Shaft and fitment key convention

€115.00

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ISO 14694:2003/Amd 1:2010

ISO 14694:2003/Amd 1:2010

Active Most Recent

Industrial fans — Specifications for balance quality and vibration levels Amendment 1

€21.00

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BS ISO 4156-1:2021

BS ISO 4156-1:2021

Active Most Recent

Straight cylindrical involute splines. Metric module, side fit Generalities

€383.00

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BS ISO 4156-3:2021

BS ISO 4156-3:2021

Active Most Recent

Straight cylindrical involute splines. Metric module, side fit Inspection

€355.00

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BS 5186:1975

BS 5186:1975

Active Most Recent

Specification for shaft centre heights

€165.00

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BS 4823:1972

BS 4823:1972

Active Most Recent

Guide to the selection of fitment bores for cylindrical shaft ends

€165.00

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