Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is under the jurisdiction of China Heavy Machinery Industry Association.
The Bearing of Back Roll for Belt Conveyor Idlers — Basic Parameters and Dimensions
1 Scope
This standard specifies the term and definition, representation methods of type, structure type, basic parameters and dimensions, and technical requirements of the bearing of back roll for belt conveyor idlers (hereinafter referred to as bearing housing).
This standard is applicable to the parameters and dimensions of idler specified in GB/T 990-1991.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 699-1999 Quality Carbon Structural Steels
GB/T 708-1988 Dimension, Shape, Weight and Tolerance for Cold-rolled Steel Plates and Sheets
GB/T 709-1988 Dimension, Shape, Weight and Tolerance for Hot-rolled Steel Plates and Sheets
GB/T 990-1991 Belt Conveyor Idlers — Basic Parameters and Dimensions
GB/T 13237-1991 Cold-rolled Quality Carbon Structural Steel Sheets and Strips
GB/T 15055-1994 Permissible Stamping Variations in Dimensions without Tolerance Indication
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
idler
a device for supporting the conveyor belt and the materials on the conveyor belt to ensure the stable operation of the conveyor belt
3.2
bearing housing
parts for supporting bearings and the like are formed by cold stamping. Types are TD75, DTII, TK, TKII and SP
4 Representation Methods of Type
4.1 Representation methods of type for bearing housing are as follows:
Idler diameter
Bearing model
Idler model
4.2 Designation example
Bearing housing of the idler type is DTII, the bearing type is 4G204, and the idler diameter is φ89, designated as DTII204-89.
5 Structure Type, Basic Parameters and Dimensions
5.1 Structure type
a. Type TD75 bearing housing as shown in Figure 1;
b. Type DTII bearing housing as shown in Figures 2 and 3;
c. Type TK bearing housing as shown in Figure 4;
d. Type TKII bearing housing as shown in Figure 5;
e. Type SP bearing housing as shown in Figure 6.
5.2 Basic parameters and dimensions
The basic parameters and dimensions shall comply with the requirements specified in Tables 1 to 5.
6 Technical Requirements
6.1 The chemical composition of materials selected for the product shall comply with the requirements of GB/T 699-1999. The recommended materials are: 08Al, 08F, SPHE, etc.
6.2 The physical and mechanical properties of the materials shall comply with the requirements of GB/T 13237-1991.
6.3 The dimension, shape, weight and tolerance of materials selected for the product shall comply with the requirements of GB/T 708-1988 and GB/T 709-1988.
6.4 According to the requirements of GB/T 15055-1994, the dimensions in the drawing without tolerance indication shall be manufactured according to the accuracy of Class f.
6.5 There shall be no defects, such as burrs, cracks, dents and wrinkles on the product surface.
6.6 D1 and bearing contact surface, the radial contact surface and the axial contact surface shall not less than 80%.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Representation Methods of Type
5 Structure Type, Basic Parameters and Dimensions
6 Technical Requirements
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is under the jurisdiction of China Heavy Machinery Industry Association.
The Bearing of Back Roll for Belt Conveyor Idlers — Basic Parameters and Dimensions
1 Scope
This standard specifies the term and definition, representation methods of type, structure type, basic parameters and dimensions, and technical requirements of the bearing of back roll for belt conveyor idlers (hereinafter referred to as bearing housing).
This standard is applicable to the parameters and dimensions of idler specified in GB/T 990-1991.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 699-1999 Quality Carbon Structural Steels
GB/T 708-1988 Dimension, Shape, Weight and Tolerance for Cold-rolled Steel Plates and Sheets
GB/T 709-1988 Dimension, Shape, Weight and Tolerance for Hot-rolled Steel Plates and Sheets
GB/T 990-1991 Belt Conveyor Idlers — Basic Parameters and Dimensions
GB/T 13237-1991 Cold-rolled Quality Carbon Structural Steel Sheets and Strips
GB/T 15055-1994 Permissible Stamping Variations in Dimensions without Tolerance Indication
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
idler
a device for supporting the conveyor belt and the materials on the conveyor belt to ensure the stable operation of the conveyor belt
3.2
bearing housing
parts for supporting bearings and the like are formed by cold stamping. Types are TD75, DTII, TK, TKII and SP
4 Representation Methods of Type
4.1 Representation methods of type for bearing housing are as follows:
Idler diameter
Bearing model
Idler model
4.2 Designation example
Bearing housing of the idler type is DTII, the bearing type is 4G204, and the idler diameter is φ89, designated as DTII204-89.
5 Structure Type, Basic Parameters and Dimensions
5.1 Structure type
a. Type TD75 bearing housing as shown in Figure 1;
b. Type DTII bearing housing as shown in Figures 2 and 3;
c. Type TK bearing housing as shown in Figure 4;
d. Type TKII bearing housing as shown in Figure 5;
e. Type SP bearing housing as shown in Figure 6.
5.2 Basic parameters and dimensions
The basic parameters and dimensions shall comply with the requirements specified in Tables 1 to 5.
6 Technical Requirements
6.1 The chemical composition of materials selected for the product shall comply with the requirements of GB/T 699-1999. The recommended materials are: 08Al, 08F, SPHE, etc.
6.2 The physical and mechanical properties of the materials shall comply with the requirements of GB/T 13237-1991.
6.3 The dimension, shape, weight and tolerance of materials selected for the product shall comply with the requirements of GB/T 708-1988 and GB/T 709-1988.
6.4 According to the requirements of GB/T 15055-1994, the dimensions in the drawing without tolerance indication shall be manufactured according to the accuracy of Class f.
6.5 There shall be no defects, such as burrs, cracks, dents and wrinkles on the product surface.
6.6 D1 and bearing contact surface, the radial contact surface and the axial contact surface shall not less than 80%.
Contents of JB/ZQ 6201-2003
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Representation Methods of Type
5 Structure Type, Basic Parameters and Dimensions
6 Technical Requirements
