Table 2a. Narrow V-Belt Standard Sheave and Groove Dimensions ANSI/RMA IP-22 (1983 )
File Break all Sharp Corners
File Break all Sharp Corners
Groove Angle α
Groove Angle α
d B
R B d B
R B
h e
a
a
b e and b g
b g
b e
h g
h g
S g
S e
S e
S g
Face Width of Standard and Deep Groove Sheaves = s g ( N g – I) + 2 S e , where N g = Number of Grooves Standard Groove Dimensions Deep Groove Dimensions
Standard Groove Dimensions
Design Factors
Min Recommended OD
Groove Angle, α , ± 0.25 deg
S g a ± 0.015
Cross Section
Standard Groove Outside Diameter Up through 3.49 Over 3.49 up to and including 6.00 Over 6.00 up to and including 12.00 Up through 9.99 Over 9.99 up to and including 16.00 Over 12.00 Up through 15.99 Over 15.99 up to and including 22.40 Over 16.00
b e (Ref)
h g (Min)
R B (Min) 0.181 0.183 0.186 0.188 0.329 0.332 0.336 0.575
d B ± 0.0005
b g ± 0.005
2 a
S e
36 38 40 42 38 40 42 38 40 42
0.344 (+ 0.099, − 0.031)
3V
0.350
0.350 0.340
0.3438
0.406
2.65
0.050
0.500 +0.125, − 0.047) 0.750 (+0.250, − 0.062)
5V
0.600
0.600 0.590
0.5938
0.688
7.10
0.100
8V
1.0000
1.125
12.50
0.200
1.000
1.000 0.990 0.580
Over 22.40
0.585
a See footnote b following Table 2b.
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