Morbark Drum chipper question

T

treecare123

Location
Denver
Hello,
I have a morbark drum chipper 115 hp runes great. My question is I have 4 inch wide knives I need to replace I had new ones shipped from morbark per the vin # and they were 5 inch wide which is per morbark is what it is suppose to have. That tells me the old knives were sharpened several times.

Does this mean I have to move the anvil back to adjust for the extra inch? Will it chip even better with bigger knives and a shortened anvil which means the chips will be closer to the belly pan as it spins? chips may come out stronger.

Any suggestions or help this subject I would appreciate.

Tree care
 
Install the new knives and try to spin the drum by hand. If the knives hit then you'll need to adjust the bed knife (anvil) accordingly. If the knives don't hit and you've never adjusted the bed knife before the time to do it is when you have brand new knives.
 
Phone Morbark and have them send you a parts manual. Routine maintenance instructions are in it.

This is from the Bandit website.
Anvil Clearance
Inspecting knives each morning is not enough to ensure proper knife function. There’s one more factor to consider: anvil clearance. It’s recommended to check anvil clearance every time a knife is changed. Proper tolerances between the knife and anvil must be maintained for a smooth chipping process. All manufacturers give suggested tolerances between the knife and anvil. If the anvil is not reset after installing a knife that has been sharpened one or more times, the knife may hit the anvil and cause breakage. When inspecting the anvil look for a sharp edge, which keeps the chipper efficient. Anvils generally have four sides and can be flipped two to four times, depending on the manufacturer. The final step is to check anvil bolts for proper torque.
By following these guidelines, as well as the guidelines found in manufacturers’ operator’s manuals, operators will reap the benefits of long- lasting chipper knives and a high quality end product. After all, spending 10 minutes a day on chipper knife inspection is a small price to pay for safety, less downtime, and mone y saved.,
 
Thank you,

I called morbark today and they are sending a parts manual.

They also said what you just posted and that after I put the new blades on they will be a huge improvement in chip speed.

thank you,
tree care
 
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