49
5 Design Hints, Dimensions and Tolerances
5.4 Standards, pulley tolerances
Table 5.10: Pulley widths
with
flanges b
f
(mm)
Widths
The minimum widths b
f
and b
f
’ for pulleys, with and without flanges,
are given in Table 5.10.
When using pulleys with only one flange, the lower value b
f
should
be used.
The width for pulleys without flanges b
f
’ can be reduced if the
tracking of the drive can be adjusted; it may not however be less
than the value b
f
specified for pulleys with flanges.
without
flanges b
f
’
(mm)
MXL
012
3.2
3.8
5.6
019
4.8
5.3
7.1
025
6.4
7.1
8.9
XL
025
6.4
7.1
8.9
031
7.9
8.6
10.4
037
9.5
10.4
12.2
L
050
12.7
14.0
17.0
075
19.1
20.3
23.3
100
25.4
26.7
29.7
H
075
19.1
20.3
24.6
100
25.4
26.7
31.2
150
38.1
39.4
43.9
200
50.8
52.8
57.3
300
76.2
79.0
83.5
XH
200
50.8
56.6
62.6
300
76.2
83.8
89.8
400
101.6
110.7
116.7
T2.5
4
4.0
5.5
8.0
6
6.0
7.5
10.0
10
10.0
11.5
14.0
T5;
6
6.0
7.5
10.0
AT 5
10
10.0
11.5
14.0
16
16.0
17.5
20.0
25
25.0
26.5
29.0
T10;
16
16.0
18.0
21.0
AT10
25
25.0
27.0
30.0
32
32.0
34.0
37.0
50
50.0
52.0
55.0
T20;
32
32.0
34.0
38.0
AT20
50
50.0
52.0
56.0
75
75.0
77.0
81.0
100
100.0
102.0
106.0
5M
10
10.0
12.0
15.0
15
15.0
17.0
19.0
25
25.0
27.0
29.0
50
50.0
52.0
56.0
8M
20
20.0
22.0
26.0
30
30.0
34.0
38.0
50
50.0
54.0
58.0
85
85.0
90.0
94.0
14M
40
40.0
47.0
54.0
55
55.0
63.0
70.0
85
85.0
95.0
102.0
115
115.0
126.0
133.0
170
170.0
180.0
187.0
with flanges
without flanges
Figure 5.5: Pulley with and without flanges
Section
Pulley
Pulley
Mion. pulley width
width
nom. width
designation
(mm)
Содержание ZRL
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