HM126 Operator’s Manual
BLADE TENSION
Woodland Mills sawmills use an ACME threaded rod for blade tensioning mounted within an
assembled stack of Belleville washers for blade cushioning.
This combined assembly allows for
predictable and repeatable tensioning throughout all temperature ranges with minimal wear and
maintenance.
The assembly has built-in tuning capability for operators that use the flush bearing method as a
visual indicator for achieving the recommended blade tension. Also, tuning for wear to ensure
proper tension is consistently achieved for years to come.
Below is a table comparing the positive and negative effects of low and high blade tension.
Low Tension
[15
→
19 ft•lb]
2
→
2-
½
Turns
Recommended Tension
[20
→
25 ft•lb]
2-
½
→
3 Turns
High Tension
[26
→
30+ ft•lb]
3
→
3-
½
+ Turns
•
Unpredictable tracking
•
Holds tracking properly
•
Accelerated belt wear
•
Wavy cuts
•
Cuts accurately. Optimal
blade life
•
Unpredictable tracking
•
Blades rely more on guides
•
Optimal bearing life
•
Overheated blades. Blade
breakage
•
Optimal belt life
•
Accelerated bearing wear
HM126-MY2021-EN: Rev F
Page
of
70
112
14-Jul-2021
Shim Washers
Belleville Washers
Thrust Bearing
Spring Washer Holder Tube
Flush
Содержание HM126
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