55
St = Steel Al = Aluminium GG = Cast iron We reserve the right to make technical changes.
d
d
(mm)
Type L – Pitch 9.525 mm for belt width 050
Type XL – Pitch 5.08 mm for belt width 025, 031, 037
10 XL 037 10 6F St 16.17 15.66 23 14.3 19.8 9.5 5.0 6.4 M3 0.02
11 XL 037 11 6F St 17.79 17.28 23 14.3 19.8 9.5 5.0 6.4 M3 0.02
12 XL 037 12 6F St 19.40 18.89 25 14.3 19.8 12.7 5.0 7.9 M3 0.03
14 XL 037 14 6F St 22.64 22.13 28 14.3 19.8 14.3 6.0 9.5 M4 0.04
15 XL 037 15 6F St 24.26 23.75 28 14.3 19.8 15.9 6.0 11.1 M4 0.04
16 XL 037 16 6F St 25.87 25.36 32 14.3 19.8 17.5 6.0 12.7 M4 0.05
18 XL 037 18 6F St 29.11 28.60 36 14.3 19.8 19.0 6.0 14.3 M4 0.06
20 XL 037 20 6F St 32.34 31.83 38 14.3 22.2 23.8 6.0 17.5 M4 0.08
21 XL 037 21 6F St 33.96 33.45 38 14.3 22.2 23.8 6.0 17.5 M4 0.09
22 XL 037 22 6F St 35.57 35.06 42 14.3 22.2 25.4 6.0 19.1 M4 0.10
24 XL 037 24 6F St 38.81 38.30 44 14.3 22.2 27.0 6.0 20.6 M4 0.12
26 XL 037 26 6F St 42.04 41.53 48 14.3 22.2 30.0 6.0 23.0 M4 0.14
28 XL 037 28 6F St 45.28 44.77 51 14.3 22.2 30.2 6.0 23.0 M4 0.16
30 XL 037 30 6F St 48.51 48.00 54 14.3 22.2 34.9 6.0 23.0 M4 0.19
32 XL 037 32 6 Al 51.74 51.23 — 14.3 25.4 38.0 8.0 23.0 M4 0.11
36 XL 037 36 6 Al 58.21 57.70 — 14.3 25.4 38.0 8.0 23.0 M4 0.13
40 XL 037 40 6 Al 64.68 64.17 — 14.3 25.4 38.0 8.0 23.0 M4 0.17
42 XL 037 42 6W Al 67.91 67.40 — 14.3 25.4 38.0 8.0 23.0 M4 0.13
44 XL 037 44 6W Al 71.15 70.64 — 14.3 25.4 38.0 8.0 23.0 M4 0.15
48 XL 037 48 6W Al 77.62 77.11 — 14.3 25.4 38.0 8.0 23.0 M4 0.16
60 XL 037 60 6A Al 97.02 96.51 — 14.3 25.4 38.0 8.0 23.0 M4 0.18
72 XL 037 72 6A Al 116.43 115.92 — 14.3 25.4 38.0 8.0 23.0 M4 0.23
10 L 050 10 6F St 30.32 29.56 36 19 26 22 6.0 13.0 — 0.11
12 L 050 12 6F St 36.38 35.62 42 19 26 28 6.0 17.0 — 0.19
13 L 050 13 6F St 39.41 38.65 44 19 26 30 6.0 19.0 — 0.21
14 L 050 14 6F St 42.45 41.68 48 19 26 33 8.0 20.0 — 0.25
15 L 050 15 6F St 45.48 44.72 51 19 26 36 8.0 23.0 — 0.30
16 L 050 16 6F St 48.51 47.75 54 19 26 38 8.0 23.0 — 0.33
17 L 050 17 6F St 51.54 50.78 57 19 26 40 10.0 24.0 — 0.36
18 L 050 18 6F St 54.57 53.81 60 19 26 40 10.0 24.0 — 0.41
19 L 050 19 6F St 57.61 56.84 60 19 26 40 10.0 24.0 — 0.45
20 L 050 20 6F St 60.64 59.88 66 19 26 46 10.0 28.0 — 0.50
21 L 050 21 6F St 63.67 62.91 71 19 26 46 10.0 28.0 — 0.55
22 L 050 22 6F St 66.70 65.94 75 19 26 50 10.0 30.0 — 0.62
24 L 050 24 6F St 72.77 72.00 79 19 26 50 12.0 30.0 — 0.68
26 L 050 26 6F St 78.83 78.07 87 19 26 50 12.0 30.0 — 0.82
28 L 050 28 6F St 84.89 84.13 91 19 26 50 12.0 30.0 — 0.92
30 L 050 30 6F St 90.96 90.20 97 19 26 50 12.0 30.0 — 1.10
32 L 050 32 6F St 97.02 96.26 103 19 26 50 12.0 30.0 — 1.20
36 L 050 36 6WF GG 109.15 108.39 115 19 26 50 12.0 30.0 — 1.00
40 L 050 40 6WF GG 121.28 120.51 127 19 26 50 12.0 30.0 — 1.10
44 L 050 44 6AF GG 133.40 132.64 140 19 26 50 12.0 30.0 — 1.20
48 L 050 48 6AF GG 145.53 144.77 152 19 26 50 12.0 30.0 — 1.30
60 L 050 60 6A GG 181.91 181.15 — 19 28 50 15.0 30.0 — 1.30
72 L 050 72 6A GG 218.30 217.53 — 19 28 50 15.0 30.0 — 1.70
84 L 050 84 6A GG 254.68 253.92 — 19 28 50 15.0 30.0 — 1.90
Type 6F Type 6 Type 6W Type 6A Type 6WF Type 6AF
optibelt
ZRS
Timing belt pulleys for plain boring
Part No.
No.
of
teeth
Type
Material
d
a
(mm)
D
B
(mm)
b
1
(mm)
B
(mm)
D
(mm)
Pilot
bore
d
(mm)
Finished
bore
d
max
(mm)
Grub
screw
Weight
(≈ kg)