This standard specifies technical requirements, test method, inspection rules, package, storage and transport of engineering plastic cages for rolling bearing (hereinafter referred to as cage). Moreover, this standard specifies technical specification of such engineering plastics for cage as glass fibre reinforced polyamide 66, polyamide 66, glass fibre reinforced polyamide 46 and polyamide 46.
This standard is applicable to the production, inspection and acceptance of cages for bearings whose pitch diameter multiplied by bearing rotation speed is dmn<1.5×106mm•r/min and outside diameter D is less than 320mm.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the dated versions apply to this standard. For undated references, the latest edition of the normative document (include all the amendments) is applicable to this Document.
Contents I Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Symbols 5 Common Structural Type 6 Technical Requirements 6.1 Materials 6.2 Tolerance 6.3 Diametral Tensile Strength σt 6.4 Surface Quality 6.5 Rotating Flexibility 6.6 Rolling Elements Retainability 6.7 Stabilizing Treatment 7 Testing Method 7.1 Tolerance Measurement 7.2 Test of Diametral Tensile Strength 7.3 Surface Quality Inspection 7.4 Rotating Flexibility Inspection 7.5 Inspection of Rolling Elements Retainability 8 Inspection Rules 9 Package, Storage and Transport Appendix A (Normative) Technical Specification of Engineering Plastic for Rolling Bearing Cage A.1 Scope A.2 Classification A.3 Technical Requirements A.4 Testing Method A.5 Acceptance Rules A.6 Package, Marking and Storage and Transport Appendix B (Normative) Test Methods of Diametral Tensile Strength of Cage B.1 Test Equipment and Tensile Force Clamp B.2 Condition and Test Environment of the Cage Sample B.3 Extraction of the Cage Sample B.4 Test Methods B.5 Calculation of Diametral Tensile Strength of Cage σt
1 Scope
This standard specifies technical requirements, test method, inspection rules, package, storage and transport of engineering plastic cages for rolling bearing (hereinafter referred to as cage). Moreover, this standard specifies technical specification of such engineering plastics for cage as glass fibre reinforced polyamide 66, polyamide 66, glass fibre reinforced polyamide 46 and polyamide 46.
This standard is applicable to the production, inspection and acceptance of cages for bearings whose pitch diameter multiplied by bearing rotation speed is dmn<1.5×106mm•r/min and outside diameter D is less than 320mm.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the dated versions apply to this standard. For undated references, the latest edition of the normative document (include all the amendments) is applicable to this Document.
Contents of JB/T 7048-2011
Contents I
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
5 Common Structural Type
6 Technical Requirements
6.1 Materials
6.2 Tolerance
6.3 Diametral Tensile Strength σt
6.4 Surface Quality
6.5 Rotating Flexibility
6.6 Rolling Elements Retainability
6.7 Stabilizing Treatment
7 Testing Method
7.1 Tolerance Measurement
7.2 Test of Diametral Tensile Strength
7.3 Surface Quality Inspection
7.4 Rotating Flexibility Inspection
7.5 Inspection of Rolling Elements Retainability
8 Inspection Rules
9 Package, Storage and Transport
Appendix A (Normative) Technical Specification of Engineering Plastic for Rolling Bearing Cage
A.1 Scope
A.2 Classification
A.3 Technical Requirements
A.4 Testing Method
A.5 Acceptance Rules
A.6 Package, Marking and Storage and Transport
Appendix B (Normative) Test Methods of Diametral Tensile Strength of Cage
B.1 Test Equipment and Tensile Force Clamp
B.2 Condition and Test Environment of the Cage Sample
B.3 Extraction of the Cage Sample
B.4 Test Methods
B.5 Calculation of Diametral Tensile Strength of Cage σt
