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R-Series Electric
25
CQF3473 v.01
Operation & Service
April 17, 2018
Guide to Maintenance (continued)
BELT DEFLECTION FORCE
MODEL
H.P.
PSI
RPM
MOTOR
PULLEY
O.D.
BELT
SECTION
BELT
NUMBER
QTY
OF
BELTS
USED BELT
DEFLECTION
FORCE
(lbs. min)
NEW BELT
DEFLECTION
FORCE
(lbs. max)
R10
2
125
503
5.15
A
62
1
3.4
4.9
R10
2
175
411
4.35
AX
61
1
4.1
6.0
R10
3
125
800
7.75
A
64
1
3.2
4.6
R10
3
175
754
7.35
A
64
1
3.4
4.9
R15
5
125
780
7.35
B
65
1
5.3
7.7
R15
5
175
736
6.95
B
65
1
5.6
8.1
R15
7.5
125/175
959
8.95
B
67
1
6.3
9.2
R30
7.5
125
646
7.00
B
80
2
4.3
6.2
R30
7.5
175
568
6.20
B
79
2
4.8
6.9
R30
10
125
777
8.35
B
81
2
4.8
6.9
R30
10
175
758
8.15
B
81
2
4.8
7.0
R30
15
125/175
1049
11.15
B
85
2
5.4
7.8
R40
15
125
919
11.40
B
103
2
5.3
7.7
R40
15
175
782
9.75
B
100
2
5.9
8.5
R70
20
125
715
8.95
B
100
3
5.7
8.2
R70
20
175
665
8.35
B
100
3
6.0
8.7
R70
25
125
919
11.40
B
103
3
5.7
8.3
R70
25
175
782
9.75
B
101
3
6.4
9.3
R70
30
125/175
919
11.40
B
103
3
6.6
9.6
1.
The values given in the “BELT DEFLECTION FORCE” table are calculated for nominal
conditions and are provided for reference only. The required tension may vary due to
application, manufacturing variances, component wear, etc. Drive belts must be kept tight
enough to prevent slipping. If belts slip or squeak, they need to be tightened.
2.
Belt cross-section can be found printed on the outside surface of the belt.
If belts are too tight, overload will be put on motor and motor bearings.