Table 27. V-Ribbed Belt Standard Effective Lengths ANSI/RMA IP-26, 1977
J Cross Section
L Cross Section
M Cross Section
Standard Length Designation a
Standard Effective Length
Permissible Deviation from Standard Length
Standard Length Designation a
Standard Effective Length
Permissible Deviation from Standard Length
Standard Length Designation a
Standard Effective Length
Permissible Deviation from Standard Length
180 190 200 220 240 260 280 300 320 340 360 380 400 430 460 490 520 550 580 610 650
18.0 19.0 20.0 22.0 24.0 26.0 28.0 30.0 32.0 34.0 36.0 38.0 40.0 43.0 46.0 49.0 52.0 55.0 58.0 61.0 65.0
500 540 560 615 635 655 675 695 725 765 780 795 815 840 865 915 975 990
50.0 54.0 56.0 61.5 63.5 65.5 67.5 69.5 72.5 76.5 78.0 79.5 81.5 84.0 86.5 91.5 97.5 99.0
900 940 990
90.0 94.0 99.0
+0.2, − 0.2 +0.2, − 0.2 +0.2, − 0.2 +0.2, − 0.2 +0.2, − 0.2 +0.2, − 0.2 +0.2, − 0.2 +0.2, − 0.3 +0.2, − 0.3 +0.2, − 0.3 +0.2, − 0.3 +0.2, − 0.3 +0.2, − 0.4 +0.2, − 0.4 +0.2, − 0.4 +0.2, − 0.4 +0.2, − 0.4 +0.2, − 0.4 +0.2, − 0.5 +0.2, − 0.5
+0.2, − 0.4 +0.2, − 0.4 +0.2, − 0.4 +0.2, − 0.5 +0.2, − 0.5 +0.2, − 0.5 +0.3, − 0.6 +0.3, − 0.6 +0.3, − 0.6 +0.3, − 0.6 +0.3, − 0.6 +0.3, − 0.6 +0.3, − 0.7 +0.3, − 0.7 +0.3, − 0.7 +0.4, − 0.7 +0.4, − 0.8 +0.4, − 0.8 +0.4, − 0.8 +0.4, − 0.9 +0.4, − 0.9
+0.4, − 0.7 +0.4, − 0.8 +0.4, − 0.8 +0.4, − 0.8 +0.4, − 0.9 +0.4, − 0.9 +0.4, − 0.9 +0.4, − 1.0 +0.5, − 1.1 +0.5, − 1.1 +0.6, − 1.2 +0.6, − 1.2 +0.6, − 1.3 +0.7, − 1.4 +0.7, − 1.4 +0.8, − 1.6 +0.8, − 1.6 +0.9, − 1.6 +1.0, − 1.8 +1.1, − 2.2
1060 1115 1150 1185 1230 1310 1390 1470 1610 1650 1760 1830 1980 2130 2410 2560 2710 3010
106.0 111.5 115.0 118.5 123.0 131.0 139.0 147.0 161.0 165.0 176.0 183.0 198.0 213.0 241.0 256.0 271.0 301.0
1065 1120 1150
106.5 112.0 115.0
+0.2, − 0.5 +1.2, − 2.4 a To specify belt size, use the standard length designation, followed by the letter indicating belt cross section and the number of ribs desired. For example: 865L10. All dimensions in inches.
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