Bedknife Replacement and Grinding
1.
Remove bedbar from the cutting unit (see Bedbar
Removal and Installation).
2.
3.
Remove bedknife screws and bedknife.
Remove all rust, scale and corrosion from the bedbar
surface before installing new bedknife.
NOTE: Use a torque wrench and a bedknife screw tool
to install bedknife screws.
4.
Install new bedknife as follows:
A. Make sure bedbar threads are clean.
B. Use new bedknife screws. Apply anti−seize lubri-
cant to the screw threads before installing.
9
7
5
3
1
2
4
6
8
10
IMPORTANT: Do not use an air or manual impact
wrench to tighten bedknive screws.
Figure 25
C. Tighten screws to a torque of 250 to 300 in−lb
(28.3
to 33.9 N−m). Tighten screws from the center
toward each end of the bedbar (Fig. 25).
Top Face
5.
Since there can be variations in the mounting sur-
Relief Angle
face of the bedbar, a new bedknife will not be perfectly
flat after it is installed. Because of this, it is necessary to
backlap or grind a new bedknife after installing it to the
bedbar. Follow the existing angle that was ground into
the bedknife and grind only enough to make sure the top
surface is true.
Front
Face
Front Angle
Figure 26
Regrinding Bedknife
Remove bedbar assembly from cutting unit before at-
tempting to regrind a used bedknife (see Bedbar Re-
moval and Installation).
Note:
When grinding, be careful to not overheat the
bedknife. Remove small amounts of material with each
pass of the grinder.
Note:
If the height of cut is a 1/2 inch or lower on the
cutting unit, the front angle can be increased to 30o for
improved performance.
Bedknife Regrinding Specifications
Relief Angle
5o
3o to 6o
Relief Angle Range
Front Angle
15o (see Note above)
13o to 17o
Front Angle Range
Cutting Units
Page 7 − 20
Reelmaster 3100−D
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| Language | English |
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