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CONVEYOR BELT SPEEDS & FORMULAS / CONVEYOR BELT DIAGRAM
REFERENCE
CHARTS
CONVEYOR BELT SPEEDS & FORMULAS
CONVEYOR BELT SPEEDS
Pulley Revolutions Per Minute & Formulas
DIAMETER OF
PULLEY IN INCHES
PULLEY CIRCUMFERENCE
IN FEET
BELT SPEEDS IN FEET PER MINUTE
100 150
200 250 300 350 400 500 600
PULLEY REVOLUTIONS PER MINUTE
12
3.14
31.8
47.7
63.7
79.6
95.6
111.4
127.3
159.2
191.0
14
3.67
27.2
40.8
54.5
68.2
81.7
95.5
109.1
136.4 163.7
16
4.18
23.9
35.8
47.8
59.8
71.8
85.0
95.5
119.4
143.2
18
4.72
21.1
31.8
42.4
53.0
63.6
74.2
84.9
106.1
127.3
20
5.24
19.1
28.6
38.2
47.7
57.2
66.8
76.4
95.5
114.6
24
6.28
16.0
23.9
31.9
39.8
47.8
55.7
63.7
79.7
95.5
26
6.80
14.7
22.0
29.4
36.7
44.2
51.5
58.8
73.5
88.1
28
7.32
13.7
20.5
27.3
34.2
41.0
47.8
54.7
68.3
81.9
30
7.85
12.7
19.1
25.5
31.8
38.2
44.6
51.0
63.7
76.4
32
8.37
11.9
17.9
23.9
29.8
35.8
41.8
47.7
59.7
71.6
36
9.42
10.6
15.9
21.2
26.5
31.8
31.8
45.5
53.0
63.7
TO OBTAIN
HAVING
FORMULA
Belt speed feed per minute
Diameter (D) of pulley inches and revolutions per minute (RPM)
S = 0.2618 x D x RPM
Shaft Speed revolutions per minute (RPM)
Velocity (S) ft. per minute and diameter (D) of pulley inches
RPM =
Diameter (D) of pulley inches
Velocity (S) ft. per minute and revolutions per minute (RPM)
D =
S
0.2618 x D
S
0.2618 x RPM
D + d
2
CALCULATING BELT LENGTH
KEY TO SYMBOLS
BELT LENGTH
C - Center to Center distance (inches)
For a two pulley system with no snub pulley:
L = x 3.1416 + 2C
D - Diameter of Drive Pulley (inches)
d - Diameter of Tail Pulley (inches)
L - Belt Length (inches)
CONVEYOR BELT DIAGRAM
Feed chute
Tail pulley
Head pulley/drive
Impact idlers
Troughing idlers
Return idlers
Bend idlers
Verticle gravity
take-up
Must consider position of take up at tensions pulley when determining final length.