JB/T3411.68-1999 This standard is a revision of JB 3478-83 "Dimensions of extension sleeves for tools with taper shanks". Only the following points have been modified during the revision, and the main technical content has not changed: - Writing format; - Standard name plus English; - Relevant referenced standards and related content; - Thread drawing method. This standard is not equivalent to ISO 238:1974 "Transition sleeves and extension sleeves for tools with Morse taper shanks". This standard specifies the type and size of extension sleeves for tools with taper shanks. JB/T 3411.68-1999 Dimensions of extension sleeves for tools with taper shanks JB/T3411.68-1999 Standard download decompression password: www.bzxz.net

ICS25.080.01
Mechanical Industry Standard of the People's Republic of China
JB/T3411.68—1999
Extension bush for taper shank tool
Extension bush for taper shank tool Dimensions
Published on 1999-05-20
State Bureau of Machinery Industry
Implementation on 2000-01-01
Mechanical Industry Standard of the People's Republic of China
Extension bush for taper shank tool
Extension bush for taper shank tool Dimensions
This standard specifies the types and dimensions of extension bushes for taper shank tools. 2 Reference standards
JB/T3411.68-1999
Replaces JB3478—83
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. Parties using this standard should explore the possibility of using the latest versions of the following standards GB/T1443—1996
JB/T3411.831999
3 Types and dimensions
Self-clamping taper for machine tools and tool shanks
Dimensions of 90° boring bars with taper shanks
Types and dimensions are as specified in the following figures and tables. Mo Diao
Approved by the State Machinery Industry Bureau on May 20, 19992
Implemented on January 1, 2000
Inner cone number
JB/T3411.68-1999
1 The dimensions of the locking groove in this standard shall be in accordance with Appendix A of JB/T3411.83-1999. 2 The dimensions and deviations of Morse cones and metric cones shall be in accordance with the provisions of GB/T1443 4 Marking
Marking example:bzxZ.net
Whether to make a locking groove or not is determined by the design.
External taper is Morse taper No. 5, internal taper is Morse taper No. 4Conical shank tool extension sleeveExternal taper sleeve
5-4JB/T3411.681999
Mechanical industry standard
Dimensions of tapered shank tool extension sleeve
JB/T3411.68-1999
Published by the Mechanical Standardization Research Institute of the Ministry of Machinery IndustryPrinted by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry (No. 2, Shouti South Road, Beijing: Postal Code 100044)*
Book size 880×1230
X number of characters xXX,XXX
Printing sheets X/X
Xth printing in XX month, 19XX
Xth edition in XX month, 19XX
Number of prints 1-XXX
Price XXXXX yuan
XX-XXX
66689 /
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