Bedknife Replacement and Grinding (Fig. 22 and Fig. 23)
1.Remove bedbar from cutting unit (see Bedbar Re- moval and Installation).
2.Remove bedknife screws and remove bedknife.
3.Remove all rust, scale and corrosion from bedbar surface before installing new bedknife.
4.Install new bedknife:
A.Make sure bedbar threads are clean.
B.Use new screws. Apply anti±seize lubricant to screw threads before installing.
IMPORTANT: DO NOT use an impact wrench .
C. Tighten screws to a torque of 250 to 300 in±lb (288 to 345 kg±cm) working from the center toward each end of the bedbar (Fig. 22).
5.Since there can be variations in the mounting sur- 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.
Regrinding Bedknife
Remove bedbar / bedknife assembly from cutting unit before attempting to regrind a used bedknife (see Bed- bar Removal 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 1/2±inch or lower on the cutting unit, the front angle can be increased to 30_ for improved performance.
Bedknife Regrinding Specifications
Relief Angle | 5_ |
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Relief Angle Range | 3_ to 6_ |
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Front Angle | 15_ (see Note above) |
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Front Angle Range | 13_ to 17_ |
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Use a torque wrench and bedknife screw tool
9 7 5 3 1 2 4 6 8 10
Tighten screws to a torque of 250 to 300 in±lb (288 to 345 kg±cm) starting in the middle of the bedknife.
Figure 22
Top Face
Relief Angle
Front
Face
Front Angle
Figure 23
Cutting Units | Page 7 ± 18 | Reelmaster 2300±D/2600±D |
