JB/T 7886.1-1999 This standard is a revision of JB/T 7886-95 "Saw blades for sawtooth cotton gin and sawtooth velvet stripping machine". The main technical content changes are as follows: - The type and basic dimensions have been adjusted; - The test methods and inspection rules have been modified. This standard specifies the type and basic dimensions, technical requirements, inspection rules, marking and packaging of sawtooth cotton gin and sawtooth velvet stripping machine saw blades. This standard is applicable to sawtooth cotton gin and sawtooth velvet stripping machine saw blades. This standard was first issued in 1974 as NJ 94-74, first revised to GB 5674-85 on December 3, 1984, and adjusted to JB/T 7886-95 in April 1996. JB/T 7886.1-1999 Sawtooth Cotton Gin, Sawtooth Stripping Machine Saw Blade JB/T7886.1-1999 Standard download decompression password: www.bzxz.net

1 Scope
Machinery Industry Standard of the People's Republic of China
Sawgin and sawlinter-Saw
JB/T 7886.11999
Replaces JB/T7886-95
This standard specifies the type and basic dimensions, technical requirements, inspection rules, marking and packaging of saw blades for saw-toothed cotton gin and saw-toothed velvet stripping machines (hereinafter referred to as saw blades).
This standard applies to saw blades for saw-toothed cotton gin and saw-toothed velvet stripping machines. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T699—1988
Technical conditions for high-quality carbon structural steel
Saw blades for sawtooth cotton gin and sawtooth velvet stripping machines
Product quality classification
JB/T51207—1999
3 Type and basic dimensions
The type and basic dimensions of saw blades shall conform to the requirements of Figure 1 and Table 1. 3.1
D (outer diameter)
Saw blade type
Saw blade 400-174.6
Saw blade 320-74.6
Saw blade 320-120
3.2 Marking examplebzxZ.net
d (inner diameter)
Saw blade with an outer diameter of 320mm and an inner diameter of 74.6mm is marked as: Saw blade
Limit approved by the National Machinery Industry Bureau on September 17, 1999
320-74.6JB/T 7886.1—1999
2000-01-01 implementation
JB/T7886.1-1999
Appendix to the standard】
Appendix A
A1 The basic tooth shape of saw blades has been given in the content of the standard. In order not to restrict the development of saw tooth shape, the following technical features are given. A1.1 If the tooth shape (such as curved teeth, etc.) different from the basic size specified in 3.1 of this standard is manufactured, the manufacturer should enlarge the saw blade tooth shape to facilitate its use in the manufacturing process. Processing and testing. A1.2 Saw blades with other tooth shapes can be provided based on the negotiation between the supply and demand parties. 4
People's Republic of China
Mechanical Industry Standard
Sawtooth Cotton Gin,
Sawtooth Fleece Stripping Machine
JB/T 7886.11999
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2, Shouti South Road, Beijing
Format 880×12301/16
Postal Code 100044)
Print Sheet X/X
School Number xxx,xxx
Xth Printing in XX Month, 19XX
Xth Edition in XX Month, 19XX
Number of Prints 1-XXX
Price XXX.XX Yuan
XX-xxx
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66619882 /2
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