Detail of JB/T 11841-2014

Introduction of JB/T 11841-2014

JB/T 11841-2014 Rolling bearing parts - Metal solid cages - Specifications 1 Scope This standard specifies the material, tolerance, appearance quality and other technical requirements as well as inspection methods, inspection rules, marking, packaging and storage of metal solid cages for rolling bearings. This standard is applicable to the production, inspection and acceptance of metal solid cages. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 699-1999 Quality carbon structural steels GB/T 1176-2013 Casting copper and copper alloys GB/T 1348-2009 Spheroidal graphite iron castings GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 4437.1-2000 Aluminium and aluminium alloy extruded tubes - Part 1: Seamless tubes GB/T 4437.2-2003 Aluminium and aluminium alloy extruded tubes - Part 2: Seam tubes GB/T 5231-2012 Designation and chemical composition of wrought copper and copper alloys GB/T 8597-2013 Rolling bearings - Rust proof packaging GB/T 28268-2012 Rolling bearings - Specifications of pressed cages JB/T 7051-2006 Rolling bearing parts - Methods for the measurement and assessment of surface roughness 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 28268-2012 and the following apply. 3.1 variation of outside diameter in a single plane VDcsp difference of single outside diameter between the maximum and the minimum single planes in a single radial plane parallel to the tangent plane of the end face of the cage VDcsp=Dcspmax-Dcspmin 3.2 variation of mean outside diameter VDcmp difference of mean outside diameter of single cage in maximum and minimum single planes VDcmp=Dcmpmax-Dcmpmin; 3.3 variation of bore diameter in a single plane Vdcsp difference of single bore diameter between the maximum and the minimum single planes in a single radial plane parallel to the tangent plane of the end face of the cage Vdcsp=dcspmax-dcspmin 3.4 variation of mean bore diameter Vdcmp difference of mean bore diameter of single cage in maximum and minimum single planes Vdcmp=dcmpmax-dcmpmin; 3.5 variation of wall thickness VKcs difference of the maximum and minimum single wall thickness of the cage VKcs=Kcsmax-Kcsmin 3.6 variation of width VBcs difference of the maximum and minimum single widths at both sides of the cage

Contents of JB/T 11841-2014

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols (see Figures 1 to 21) 5 Common constructions 6 Technical requirements 6.1 Materials 6.2 Tolerance 6.3 Surface roughness 6.4 Appearance quality 6.5 Miscellaneous 7 Testing methods 7.1 Measurement of variations of bore and outside diameters in a single plane, Vdcsp and Dcsp, and variations of mean bore and outside diameters, Vdcmp and VDcmp 7.2 Measurement of error of guide surface roundness, Cir 7.3 Measurement of variation of wall thickness, VKcs 7.4 Measurement of variation of width, VBcs 7.5 Measurement of flatness, Pk 7.6 Measurement of variation of center circle diameter of pocket of cage for cylindrical roller bearing, VDcp 7.7 Measurement of variation of center circle diameter of pocket of cage for self-aligning roller bearing, VDcp 7.8 Measurement of variation of center circle diameter of pocket of cage for self-aligning thrust roller bearing, VDcp 7.9 Measurement of variation of radial distance of center of pocket to center of bore, VKp 7.10 Measurement of variation of radial distance of center of pocket to bore surface, VKp1 7.11 Measurement offset of pocket center line to theory center line, P1 7.12 Measurement of variation of chord length between any two adjacent pockets, VC 7.13 Measurement of variation of chord length between double-row adjacent pockets, VC2 7.14 Measurement of variation of bottom height of pocket, Vhc 7.15 Measurement of variation of a single bottom height of pocket of cage for cylindrical roller bearing, Vhcs 7.16 Measurement of variation of Lc of cage for angular contact ball bearing and bidirectional thrust angular contact ball bearing 7.17 Measurement of variation of Lc of cage for thrust ball bearing 7.18 Measurement of variation of chord length between two adjacent rivet holes, VC1 7.19 Measurement of variation of thickness between rivet hole and pocket, Ve 7.20 Measurement of deviation of pocket center height of cage for cylindrical thrust roller bearing, K1 7.21 Measurement of perpendicularity, of pocket center line of cage for cylindrical roller bearing to positioning reference end face, f 7.22 Measurement of the angle θ between the center line of pocket of cage for self-aligning roller bearing and the center line of the cage 7.23 Detection of nominal diameter of pocket, dc4 and nominal diameter of rivet hole, dc5 7.24 Measurement of perpendicularity of the center line of the rivet hole to the positioning reference end face, f1 7.25 Measurement of surface roughness 8 Inspection rules 9 Marking, packaging, storage and transportation