JB/T 13068-2017Powder metallurgy synchronizer hubs for automotive transmissions - Technical requirements (English PDF)

1 Foreword

JB/T 13068-2017 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 9 January 2017 and has been in force since 1 July 2017.

2 Scope

This standard is a recommended Chinese mechanical and machinery industry standard for the powder metallurgy synchronizer gear hub used in automobile transmissions. It sets the product classification, the technical requirements, the test methods and the inspection rules for the hub, and it covers marking, packaging, transport and storage. It was issued by the Ministry of Industry and Information Technology and carries Chinese classification H72 with international classification 77.160. Among the standards it quotes are GB/T 223.7-2002, GB/T 223.26-2008, GB/T 223.53-1987, GB/T 223.54-1987, GB/T 223.69-2008, GB/T 1184-1996, GB/T 1800.1-2009, GB/T 1804-2000, GB/T 3478.1-2008, GB/T 3478.6-2008, GB/T 5163-2006, GB/T 7963-2015, GB/T 7964-1987, GB/T 9095-2008 and GB/T 9097-2016.

3 Normative references

JB/T 13068-2017 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 223.7-2002 — Iron powder--Determination of iron content--Potassium dichromate titration method

GB/T 223.26-2008 — Iron, steel and alloy - Determination of molybdenum content - The thiocyanate spectrophotometric method

GB/T 223.53-1987

GB/T 223.54-1987

GB/T 223.69-2008 — Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace

GB/T 1184-1996 — Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications

GB/T 1800.1-2009

GB/T 1804-2000 — General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications

GB/T 3478.1-2008 — Straight cylindrical involute splines -- Metric module, side fit -- Part 1: Generalities

GB/T 3478.6-2008 — Straight cylindrical involute splines - Metric module, side fit - Part 6: 30°pressure angle M and W values

GB/T 5163-2006 — Sintered metal materials, excluding hard metals -- Permeable sintered metal materials -- Determination of density, oil content, and open porosity

GB/T 7963-2015 — Sintered metal materials, excluding hard metals -- Tensile test pieces

GB/T 7964-1987

GB/T 9095-2008 — Sintered ferrous materials, carburized or carbonitrided -- Determination and verification of case-hardening depth

GB/T 9097-2016 — Sintered metal materials, excluding hard metals -- Determination of apparent hardness and microhardness

4 About this standard

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

English translation: about 15 pages

5 Classification and status

International classification (ICS): 77.160

Prefix JB/T: recommended standard.