LeeBoy 6150 - Troubleshooting; Auger and Conveyor Chain Tension Adjustment

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LeeBoy 6150 Conveyor Paver 5-33
Maintenance
Troubleshooting
Auger and Conveyor Chain
Tension Adjustment
The auger and conveyor chains need periodic
adjustment. Generally, the slack of a roller chain should
be on the lower side. (Figure 5-42)
Adequate slack (S) is about four (4) percent of the span
for normal drives, but the slack should be about two (2)
percent of the span for the auger chains:
• Vertical drive or close to vertical drive.
• Center distance between two shafts is greater than
three (3) feet.
• Chain is operated under heavy load and high
frequency of on and off drive.
• Direction of the drive is often changed.
Auger and conveyor chains must have
a slack of 1/4 to 3/8 inches. To measure deection,
exert 40 - 60 pounds of force to chain in either
direction.
Product Application
Auger Chain
Conveyor
Chain
Chain Span Distance
in Inches
13.1 16.13
Slack Distance
“S” (2% of Span
Distance) in Inches
0.3 0.3
Slack Distance 1/4 in 3/8 in
Tangent Length (TL) Between Sprockets in Inches (Centimeters)
10 (25) 20 (51) 30 (76) 50 (127) 70 (178) 100 (254)
Tangent Length Between Sprockets in Inches (Millimeters)
Horizontal
To 45°
0.4 - 0.6
(10 - 15)
0.8 - 1.2
(20 - 30)
1.2 - 1.8
(30 - 46)
2.0 - 3.0
(51 - 76)
2.8 - 4.2
(71 - 107)
4.0 - 6.0
(102 - 152)
45° To
Vertical
0.2 - 0.3
(5 - 8)
0.4 - 0.6
(10 - 15)
0.6 - 0.9
(15 - 23)
1.0 - 1.5
(25 - 38)
1.4 - 2.1
(36 - 53)
2.0 - 3.0
(51 - 76)
REQUIRED MID-SPAN MOVEMENT
S
S
TL
45º
Horizontal to 45° Chain Tension
45° to Vertical
Chain Tension
S
S
45º
TL
S - SLACK
TL - TANGENT LENGTH
Figure 5-42. Chain Slack Adjustment for Proper
Tension