JB/T 11841-2014 English PDF (JBT11841-2014)

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JB/T 11841-2014: Rolling bearing parts. Metal solid cages. Specifications
JB/T 11841-2014
MACHINERY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 21.100.20
J 11
Record No.: 45652-2014
Rolling Bearing Parts - Metal Solid Cages -
Specifications
ISSUED ON: MAY 06, 2014
IMPLEMENTED ON: OCTOBER 01, 2014
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Symbols (See Figures 1~21) ... 9
5 Common Structure Types ... 11
6 Technical Requirements ... 18
6.1 Materials ... 18
6.2 Tolerance ... 19
6.3 Surface roughness ... 23
6.4 Appearance quality ... 23
6.5 Others ... 24
7 Inspection Method ... 24
7.1 Measurement for variations of the bore diameter and outside diameter in a
single plane (Vdcsp, VDcsp), and the variations of mean bore diameter and outside
diameter (Vdcmp, VDcmp) ... 24
7.2 Measurement for roundness error of the guide surface, ΔCir ... 25
7.3 Measurement for variation of wall thickness, VKcs ... 26
7.4 Measurement for variation of width, VBcs ... 26
7.5 Measurement for flatness, Pk ... 27
7.6 Measurement for variation of center circle diameter of pocket, VDcp, of cage for
cylindrical roller bearing ... 27
7.7 Measurement for variation of center circle diameter of pocket, VDcp, of cage for
spherical roller bearing ... 28
7.8 Measurement for variation of center circle diameter of pocket, VDcp, of cage for
thrust self-aligning roller bearing ... 29
7.9 Measurement for variation of radial distance of center of pocket to center of
bore, VKp ... 30
7.10 Measurement for variation of radial distance of center of pocket to bore
surface, VKp1 ... 31
7.11 Measurement for offset of pocket center line to theory center line, ΔP1 ... 32
7.12 Measurement for variation of chord length between any two adjacent pockets,
VC ... 32
7.13 Measurement for variation of chord length between double-row adjacent
pockets, VC2 ... 33
7.14 Measurement for variation of bottom height of pocket, Vhc ... 33
7.15 Measurement for variation of a single bottom height of pocket, Vhcs, of cage
for cylindrical roller bearing ... 34
7.16 Measurement for variation, Lc, of the cage for angular contact ball bearing
and double-direction thrust angular contact ball bearing ... 34
7.17 Measurement for variation, Lc, of the cage for thrust ball bearing ... 35
7.18 Measurement for variation of chord length between two adjacent rivet holes,
VC1 ... 35
7.19 Measurement for variation of thickness between rivet hole and pocket, Ve 36
7.20 Measurement for deviation of pocket center height, ΔK1 ... 36
7.21 Measurement for perpendicularity of the pocket centerline to the positioning
reference end face, f, of the cage for cylindrical roller bearing ... 37
7.22 Measurement for angle between the pocket centerline and centerline of the
cage, Θ, for spherical roller bearing ... 38
7.23 Test of nominal diameter of pocket, dc4, and nominal diameter of rivet hole,
dc5 ... 38
7.24 Measurement for perpendicularity of rivet hole centerline to the positioning
reference end face, f1 ... 38
7.25 Measurement for surface roughness ... 38
8 Inspection Rules ... 38
9 Markings, Package, Storage and Transportation ... 41
Rolling Bearing Parts - Metal Solid Cages -
Specifications
1 Scope
This Standard specifies the technical requirements for materials, tolerances,
appearance quality, as well as inspection methods, inspection rules, markings,
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 documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
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 Attribute - Part1:
Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-Lot
Inspection
GB/T 4437.1-2000 Aluminum and Aluminum Alloy Extruded Tubes - Part 1:
Seamless Tubes
GB/T 4437.2-2003 Aluminum and Aluminum 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
3.6 Variation of width, VBcs
The difference between the maximum and minimum single width of the two end faces
of the cage.
3.7 Flatness, Pk
The difference between the maximum and minimum heights of the plane on one side
of the cage at different angular positions along the diametrical direction inside and
outside perpendicular to the plane surface.
3.8 Variation of center circle diameter of pocket, VDcp
The difference between the maximum and the minimum center circle diameters of each
pocket on a single cage.
3.9 Variation of radial distance of center of pocket center of bore, VKp
The difference between the maximum and the minimum radial distances for the center
of each pocket to the center of bore on a single cage.
3.10 Variation of radial distance of center of pocket to bore surface, VKp1
The difference between the maximum and the minimum radial distances for the center
of each pocket go the bore surface on single cage.
3.11 Offset of pocket center line to theory center line, ΔP1
The circumferential offset distance of the actual center line of each pocket to the theory
center line of a single radial plane on the radial pocket of a single cage.
3.12 Variation of chord length between any two adjacent pockets, VC
The difference between the maximum and the minimum chord lengths for the two
plane.
3.20 Deviation of pocket center height, ΔK1
The difference between the pocket center height and the nominal pocket center height.
4 Symbols (See Figures 1~21)
The symbols given in GB/T 28268-2012 and the following are applicable to this
document:
Bc: nominal width of cage: nominal width of cage seat amplitude [see Figures 4~6,
Figure 13, Figure 18a), Figure 19a)].
Bc1: nominal width of cage seat.
Bc2: nominal width of cage cover.
bc: bar width of cage.
C: the equal chord length of the pocket on the pocket center circle of the cage
(hereinafter referred to as chord length).
C1: the equal chord length of the rivet hole on the rivet hole center circle of the cage.
C2: the chord length of double-row adjacent pocket.
Dc: nominal outside diameter of cage.
Dcp: nominal diameter of the pocket center circle of the cage.
Dcp1: nominal diameter of the rivet hole center circle of the cage.
Dcp2: nominal diameter of pocket bottom center circle of the cage for spherical roller
bearing.
Dw: nominal diameter of rolling element.
dc: nominal bore diameter of the cage.
dc4: nominal diameter of pocket the of the cage.
dc5: nominal diameter of rivet hole of the cage.
e: thickness between the rivet hole and the adjacent pocket of the cage.
f: perpendicularity of the pocket centerline to the positioning reference end face.
f1: perpendicularity of rivet hole centerline to the positioning reference end face.
hc: nominal height from the cage bottom surface the pocket bottom surface (hereinafter
r...