GB/T 290-2017 Rolling bearings - Needle roller bearings with drawn cup and without inner ring - Boundary dimensions
1 Scope
This standard specifies the boundary dimensions of needle roller bearings with drawn cup and without inner ring (hereinafter referred to as needle roller bearings).
This standard is applicable to the design and selection of bearings.
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 of the referenced document (including any amendments) applies.
GB/T 272 Rolling bearings - Identification code
GB/T 6930 Rolling bearings - Vocabulary
GB/T 7811 Rolling bearings - Symbols for physical quantities
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 6930 apply.
4 Symbols
For the purposes of this document, the symbols given in GB/T 7811 and the following apply.
The symbols shown in Figures 1 to 9 and the values given in Tables 1 to 8 denote nominal dimensions unless specified otherwise.
C: drawn cup width
C1: end thickness of profiled closed end drawn cup
C2: end thickness of flat closed end drawn cup
D: drawn cup outside diameter
d0: oil hole diameter
Fw: overall inner diameter of the complete set of bearing needle roller assemblies
r: chamfer dimension
rsmin: smallest single chamfer dimension of r
5 Structural type
Standard
GB/T 290-2017 Rolling bearings-Needle roller bearings with drawn cup and without inner ring-Boundary dimensions (English Version)
Standard No.
GB/T 290-2017
Status
valid
Language
English
File Format
PDF
Word Count
5500 words
Price(USD)
140.0
Implemented on
2018-5-1
Delivery
via email in 1 business day
Detail of GB/T 290-2017
Standard No.
GB/T 290-2017
English Name
Rolling bearings-Needle roller bearings with drawn cup and without inner ring-Boundary dimensions
GB/T 290-2017 Rolling bearings - Needle roller bearings with drawn cup and without inner ring - Boundary dimensions
1 Scope
This standard specifies the boundary dimensions of needle roller bearings with drawn cup and without inner ring (hereinafter referred to as needle roller bearings).
This standard is applicable to the design and selection of bearings.
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 of the referenced document (including any amendments) applies.
GB/T 272 Rolling bearings - Identification code
GB/T 6930 Rolling bearings - Vocabulary
GB/T 7811 Rolling bearings - Symbols for physical quantities
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 6930 apply.
4 Symbols
For the purposes of this document, the symbols given in GB/T 7811 and the following apply.
The symbols shown in Figures 1 to 9 and the values given in Tables 1 to 8 denote nominal dimensions unless specified otherwise.
C: drawn cup width
C1: end thickness of profiled closed end drawn cup
C2: end thickness of flat closed end drawn cup
D: drawn cup outside diameter
d0: oil hole diameter
Fw: overall inner diameter of the complete set of bearing needle roller assemblies
r: chamfer dimension
rsmin: smallest single chamfer dimension of r
5 Structural type
