JB/T 4366.2-1999 This standard is a revision of JB 4366.2-86 "End Dimensions of Milling Shafts for Floor Milling and Boring Machines". During the revision, only editorial modifications were made in accordance with relevant regulations, and the main technical content has not changed. This standard is part of the JB/T 4366 "Floor-standing Milling and Boring Machine" series of standards, which includes the following three parts: JB/T 4366.1 Boring spindle end dimensions JB/T 4366.2 Milling spindle end dimensions JB/T 4366.3 Spindle end face Key Dimensions This standard specifies the type and dimensions of the boring shaft ends of floor-standing milling and boring machines. This standard is applicable to the milling shaft of floor-standing milling and boring machines with a milling shaft diameter of 1300~2600mm. This standard was first published in December 1986. JB/T 4366.2-1999 Floor-standing milling and boring machine spindle end milling shaft end dimensions JB/T4366.2-1999 Standard download and decompression password: www.bzxz.net

ICS25.080.20
JS4
JB
Machinery Industry Standard of the People's Republic of China
JB/T4366.1~4366.3-1999
Floor-standing milling and boring machine|| tt||Released on 1999-05-20
Spindle end
Implemented on 2000-01-01
National Machinery Industry Bureau
Released
Scope| |tt||Machinery Industry Standards of the People's Republic of China
Floor Milling and Boring Machines
Spindle End
Milling Shaft End Dimensions
This standard specifies floor milling and milling machines Shaft end type and size. This standard applies to the milling shaft of floor-standing milling machines with a mirror shaft diameter of 130-260mm. Referenced standards
2
JB/T4366.2—1999
replaces JB4366.2—86
The provisions contained in the following standards are incorporated by reference in this standard constitute the provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB/T70-1985 Type and size of the end of the milling shaft of the floor-standing milling and boring machine for hexagon socket cylindrical head screws. The type and size of the end of the milling shaft of the floor-standing milling mirror machine should comply with the requirements of Figure 1, Figure 2 and Table 1. Approved by the State Administration of Machinery Industry on 1999-05-20 4
2000-01-01 Implementation
JB/T 4366.2-1999
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JB/T4366.2-1999
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school
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city
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园
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RA
K
NN
810|| tt||Spindle diameter
Mirror axis
D
130
160
200
260
acyl axis| |tt||200
260
320
400
Spindle diameter
Boring spindle
D
130| |tt||160
200
260
Note
Milling axis
200
260
320|| tt||400
D,
250
320
380
480
g
M12||tt ||Mi2
M12
M16
m,
minimum
38
38
50||tt| |50
18
25
25
30
215
265
320
410
The keyway is 5, and the match with the end key is M6/h5. 8. 8. The blast hole tolerance zone is 6H.
No dimensions, determined by the designer,
JB/T4366.2-1999bZxz.net
Table 1
8
M20
M24
M24
M30
E
minimum
91
106
130
162| |tt||minimum
30
36
45
56
K
maximum
32||tt ||52
57
75
According to needs, the geometric tolerance value and surface roughness can be higher than the indicated requirements. D, the size tolerance zone is h5.
5
6A, and A, the size difference is ±0.2.
r,
0.20
0.25
0.25
0.32
4
107
120| |tt||145
182
6
25.4
32
32
40
0.08||tt ||0.10
0.10
0.10
A,
24
27
35
C,||tt ||minimum
12.5
16
20
25
mm
n
maximum
12.5
16
20
25
Swiss noodles key dishes
GB/T 70—1985
M12×25|| tt||M12×40
M12×45
M16×60
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