Morbark M20R - Page 49

03/15 • 49
ROUTINE MAINTENANCE
Figure 1
Figure 3
Figure 2
Table 1
Belt Span
Straight
edge or belt
50
100 150
inches of span length
Pounds
302520
15105
Small
0’ ring
Large
0’ ring
Deflection
Force
Scale
Span
Scale
Belt
Straight
Edge or
Belt
50
inches of
V-belt-
Sec-
tion
Small Sheave Deflection force in lbs. for
Drive Speed Ratio of;
Speed Range
(RPM)
Diameter
(in) 1.0 1.5 2.0 4.0+
B
1200 - 1800
1200 - 1800
1200 - 1800
1200 - 1800
4.6
5.0
6.0
8.0
3.7
4.1
4.8
5.7
4.3
4.6
5.3
6.2
4.5
4.8
5.5
6.4
5.0
5.6
6.3
7.2
C
900 - 1800
900 - 1800
900 - 1800
700 - 1500
7.0
9.0
12.0
16.0
6.5
8.0
10.0
12.0
7.0
9.0
11.0
13.0
8.0
10.0
12.0
13.0
9.0
11.0
13.0
14.0
8V
900 - 1800
900 - 1800
700 - 1500
700 - 1200
400 - 1000
12.5
14.0
17.0
21.2
24.8
18.0
21.0
24.0
28.0
31.0
21.0
23.0
26.0
30.0
32.0
23.0
24.0
28.0
32.0
25.0
28.0
30.0
34.0
36.0