JB/T 4366.3-1999 This standard is a revision of JB 4366.3-86 "Spindle End Key of Floor-type 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 size of the end face keys of the spindle of floor-mounted milling and boring machines. This standard is applicable to the spindle end face keys of floor-standing milling and boring machines with a boring spindle diameter of 1300~2600mm. This standard was first published in December 1989. JB/T 4366.3-1999 Dimensions of spindle end face keys at the spindle end of floor-standing milling and boring machines JB/T4366.3-1999 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 Standard of the People's Republic of China
Spindle end of floor-type milling and boring machines
Spindle end key dimensions
This standard specifies the type and size of the spindle end keys of floor-type milling and boring machines. This standard is applicable to the spindle end keys of floor-standing milling and boring machines with a boring spindle diameter of 130~260mm. The type and size of the spindle end key of a floor-standing milling and boring machine. The type and size of the spindle end key of a floor-standing milling and boring machine should comply with the requirements of Figure 1 and Table 1 and Table 2. Type A
CS
科
Type
A
ao
Note
o.00A||tt| |ao
Figure 1 Type of raw shaft end face key
Type B
JB/T4366.3—1999
replaces JB4366.3—86
33y
Gold
A
.005A
Marking example: Boring spindle diameter 130 is A-type spindle end face key mark
Mark: A130JB/T4366. 3—1999
Marking example: Milling shaft diameter 200 is A-type spindle end face key mark
Note: XA200JB/T4366.3—1999
1 material 45, hardness 42HRC; penetration Carbon pin, hardness 58HRC. 2 For surfaces without roughness, the maximum allowable value of roughness R is 6.3 μm. 3b, the dimensional tolerance zone is h5.
44, and 4, the size deviation is ±0.2.
National Machinery Industry Bureau approved 2000-01-01 implementation on 1999-05-20
Bore spindle diameter
130
160
200||tt ||260
Milling spindle diameter
200
260
320
400
b
25.4||tt ||25.4
25.4
25.4
25.4
Milling shaft end
Part diameter
250
320|| tt||380
480
b
25.4
32
32
40
K||tt| |Max
26.5
26.5
26.5
35
26.5
K
Max
32
52
57
75
JB/T4366.3—1999
Table 1
h
Maximum| |tt||25
25
25
25
25
A
Maximum
25||tt ||32
40
50
d
13
13
13
13
13
Table 2
d
13
13
13
17
d,
20
20
20
26
d,
20
20
20
20
20
13
13
13
17
h
13
13|| tt||13
13
13
A,
24
27
35
A,|| tt||14
15
20
S
max
2
2
2||tt| |2
2
S
Max
2
2.5
2.5
2.5
mm
Type
A
A
A
A
A
mm
Type|| tt||BwwW.bzxz.Net
B
B
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