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Troubleshooting
Synchronous Belts Tensioning Tables
Synchronous Belt Tensioning Tables
Deflection Forces for Belt Tensioning (lb.)
Belt Type
0-100 RPM 101-1000 RPM 1000-Up RPM
New
Belt
Used
Belt
New
Belt
Used
Belt
New
Belt
Used
Belt
SilentSync®
Yellow
15
11
12
8
9
7
White
30
21
24
17
19
13
Purple
60
43
47
34
38
27
Blue
54
38
44
31
38
27
Green
80
57
66
47
57
41
Orange
107 76
88
63
76
55
Red
161 115 131 94
115 82
Falcon Pd®
8GTR 12
24
17
14
10
9
7
8GTR 21
42
30
25
18
16
12
8GTR 36
72
51
42
30
27
21
8GTR 62
124 88
72
52
47
36
14GTR 20
38
29
31
23
28
21
14GTR 37
70
54
57
43
52
39
14GTR 68
129 99
105 78
95
71
14GTR 90
171 131 140 104 126 95
14GTR 125 238 181 194 144 175 131
Blackhawk Pd®
8MBH12
12
9
9
7
7
5
8MBH 22
23
17
16
12
13
10
8MBH 35
36
26
26
19
21
16
8MBH 60
62
45
45
33
36
27
14MBH 20 36
26
27
20
23
17
14MBH 42 76
55
57
42
49
36
14MBH 65 117 85
89
65
76
55
14MBH 90 162 118 123 90
105 77
14MBH 120 217 157 164 119 139 102
Hawk Pd®
8M 20
15
11
13
10
12
9
8M 30
23
17
20
15
19
14
8M 50
39
29
35
26
32
24
8M 85
69
50
61
45
56
41
14M 40
47
34
38
28
32
24
14M 55
70
51
56
41
48
35
14M 85
116 84
93
68
79
58
14M 115
162 118 130 95
110 80
14M 170
249 181 201 146 171 125
Synchronous Belts Tensioning Tables
Belt Strand Tension (lb.)
Belt Type
0-100 RPM 101-1000 RPM 1000-Up RPM
Belt
Weight
(kg/m)
New
Belt
Used
Belt
New
Belt
Used
Belt
New
Belt
Used
Belt
SilentSync®
Yellow
224 160 176 112 128 96 0.073
White
449 305 353 241 273 177 0.147
Purple
897 625 689 481 545 369 0.293
Blue
817 561 657 449 561 385 0.261
Green
1210 842 986 682 842 586 0.392
Orange
1618 1122 1314 914 1122 786 0.523
Red
2436 1700 1956 1364 1700 1172 0.784
Falcon Pd®
8GTR 12 370 258 210 146 130 98 0.056
8GTR 21 648 456 376 264 232 168 0.093
8GTR 36 1111 775 631 439 391 295 0.167
8GTR 62 1913 1337 1081 761 681 505 0.288
14GTR 20 571 427 459 331 411 299 0.158
14GTR 37 1052 796 844 620 764 556 0.292
14GTR 68 1939 1459 1555 1123 1395 1011 0.537
14GTR 90 2570 1930 2074 1498 1850 1354 0.711
14GTR 125 3578 2666 2874 2074 2570 1866 0.987
Blackhawk Pd®
8MBH12 179 131 131 99
99 67 0.057
8MBH 22 345 249 233 169 185 137 0.104
BMBH 35 539 379 379 267 299 219 0.165
8MBH 60 928 656 656 464 512 368 0.283
14MBH 20 553 393 409 297 345 249 0.157
14MBH 42 1167 831 863 623 735 527 0.330
14MBH 65 1796 1284 1348 964 1140 804 0.510
14MBH 90 2487 1783 1863 1335 1575 1127 0.706
14MBH 120 3332 2372 2484 1764 2084 1492 0.941
Hawk Pd®
8M 20
226 162 194 146 178 130 0.118
8M 30
347 251 299 219 283 203 0.176
BM 50
590 430 526 382 478 350 0.289
8M 85
1046 742 918 662 838 598 0.507
14M 40 715 507 571 411 475 347 0.438
14M 55
1069 765 845 605 717 509 0.583
14M 85 1778 1266 1410 1010 1186 850 0.913
14M 115 2486 1782 1974 1414 1654 1174 1.233
14M 170 3827 2739 3059 2179 2579 1843 1.835
Synchronous Belts
Tensioning Tables
1. The table deflection forces and strand tensions are typically at maximum values to cover
the broad range of loads, rpm and pulley combinations for all possible drives.
2. For drives where hub loads are critical, high speed drives or other drives with special
circumstances, the belt deflection force and strand installation tension should be
calculated by using formulas found in existing engineering manuals or use the
MaximizerPro™ Drive Selection Analysis Program.
3. Consult the TensionRite® Belt Frequency Meter manual for detailed information on using
the frequency based tension gauge.
4. Continental ContiTechoffers three different levels of tension gauges to aid you in
properly tensioning your power transmission belts. See your Sales Representative or
Distributor for more information on tensioning gauges.
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