GB/T 959.1-2017Specifications for retaining rings—Circlips (English PDF)

Foreword

This Part belongs to the serial standards under the national standard "Retaining Rings". The series include.

-- GB/T 893, Retaining Rings for Bores;

-- GB/T 894, Retaining Rings for Shaft;

-- GB/T 896, "E" Rings;

-- GB/T 959.1, Specifications for Retaining Rings - Circlips.

This Part is Part 1 of GB/T 959.

This Part was drafted in accordance with the rules given in GB/T 1.1-2009.

This Part replaces GB/T 959.1-1986, Specifications for Ring - Circlips. Compared with GB/T 959.1-1986, the major changes of this Part are as follows.

-- the material designations 70, C67S and C75S are added and it is specified that the materials of retaining rings are to be determined by the manufacturer (see Article 3);

-- it adds for heat treatment. d1 > 200 mm ~ 300 mm; hardness 390 HV ~ 470 HV;

40 HRC ~ 47 HRC (see Table 2);

-- it adds bending test for retaining rings for bores and shafts (see 4.1 and 6.1);

-- it adds conical deformation test for retaining rings for bores and shafts (see 4.2 and 6.2);

-- it modifies the technical requirements and methods for resilience test of retaining rings for bores and shafts (see 4.4 and 6.4);

-- it deletes zinc plating passivation, adds surface phosphating treatment and surface corrosion resistance and specifies that the surface treatment of retaining rings is to be determined by the manufacturer (see Article 5 and 6.6);

-- it adds dimensions, properties and acceptable quality levels (AQL) of retaining rings (see Table 6 and Table 7).

1 Application Scope

This Part of GB/T 959 specifies the specifications for retaining rings for bores and shafts and "E" rings.

This Part applies to retaining rings for bores and shafts and "E" rings as specified by the national Standards, as well as other standard and non-standard retaining ring products.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to This Standard.

GB/T 90.1, Fasteners - Acceptance Inspection

GB/T 90.2, Fasteners - Marking and Packaging

GB/T 1222, Spring Steels

GB/T 4357, Cold-drawn Non-alloy Steel Wire for Springs

GB/T 10125, Corrosion tests in Artificial Atmospheres - Salt Spray Tests

GB/T 11376, Phosphate Conversion Coatings for Metals

JB/T 3411.47, Pincer for Assembly Spring Thrust Collar on Shaft - Dimensions

JB/T 3411.48, Pincer for Assembly Spring Thrust Collar in Hole - Dimensions

3 Materials

The materials of retaining rings and heat treatment hardness are to be determined by the manufacturer and shall be as specified in Table 1 and Table 2. […]

Annex