T80, T81, T83 Minimum Required Installed Tension (lbs) - ◄ Back to Technical Data
Required Installed Tension
Width (in)
Cord
Type
No. of
Pulley Teeth
1/8
.012
3/16
.018
1/4
.025
5/16
.031
3/8
.037
7/16
.043
1/2
.050
9/16
.056
5/8
.062
3/4
.075
7/8
.087
1
1.00
Standard
Polyester
10-20 teeth
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
6.0
7.0
8.0
21-30 teeth
0.8
1.1
1.5
1.9
2.3
2.6
3.0
3.4
3.8
4.5
5.3
6.0
31-40 teeth
0.6
0.9
1.3
1.6
1.9
2.2
2.5
2.8
3.1
3.8
4.4
5.0
over 40 teeth
0.5
0.7
1.0
1.3
1.5
1.7
2.0
2.2
2.5
3.0
3.5
4.0
Hi-Modulus
Polyester
10-20 teeth
1.8
2.6
3.5
4.4
5.3
6.1
7.0
7.9
8.8
10.5
12.3
14.0
21-30 teeth
1.5
2.2
3.0
3.8
4.5
5.2
6.0
6.7
7.5
9.0
10.5
12.0
31-40 teeth
1.4
2.1
2.8
3.4
4.1
4.8
5.5
6.2
6.9
8.3
9.6
11.0
over 40 teeth
1.3
1.9
2.5
3.1
3.8
4.4
5.0
5.6
6.3
7.5
8.8
10.0
X-Style
Kevlar
10-20 teeth
2.2
3.4
4.5
5.6
6.8
7.9
9.0
10.1
11.3
13.5
15.8
18.0
21-30 teeth
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
12.0
14.0
16.0
31-40 teeth
1.8
2.6
3.5
4.4
5.3
6.1
7.0
7.9
8.8
10.5
12.3
14.0
over 40 teeth
1.6
2.3
3.1
3.9
4.7
5.5
6.3
7.0
7.8
9.4
10.9
12.5
D-Style
Kevlar
10-20 teeth
2.5
3.7
5.0
6.3
5.7
8.7
10.0
11.2
12.5
15.0
17.5
20.0
21-30 teeth
2.3
3.4
4.5
5.6
6.6
7.9
9.0
10.1
11.3
13.5
15.8
18.0
31-40 teeth
1.9
2.9
3.9
4.9
5.8
6.8
7.8
8.7
9.7
11.6
13.6
15.5
over 40 teeth
1.6
2.4
3.3
1.1
4.9
5.7
6.5
7.3
8.1
9.8
11.4
13.0
A-Style
Kevlar
10-20 teeth
3.0
4.5
6.0
7.5
9.0
10.5
12.0
13.5
15.0
18.0
21.0
24.0
21-30 teeth
2.5
3.7
5.0
6.3
7.5
8.7
10.0
11.2
12.5
15.0
17.5
20.0
31-40 teeth
2.1
3.1
4.1
5.2
6.2
7.2
8.3
9.3
10.3
12.4
14.4
16.5
over 40 teeth
1.7
2.5
3.4
4.2
5.1
5.9
6.8
7.6
8.4
10.1
11.8
13.5
B-Style Kevlar
10-20 teeth
3.3
1.5
2.0
2.5
3.0
11.4
13.0
14.6
16.3
19.5
22.8
26.0
21-30 teeth
2.8
4.1
5.5
6.9
8.3
9.6
11.0
12.4
13.8
16.5
19.3
22.0
31-40 teeth
2.3
3.4
4.5
5.6
6.8
7.9
9.0
10.1
11.3
13.5
15.8
18.0
over 40 teeth
1.8
2.7
3.6
4.5
5.4
6.3
7.3
8.1
9.1
10.9
12.7
14.5

 
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