Chipper shredder importance of knives vs hammers


Old 03-30-18, 07:03 AM
Thread Starter
Join Date: Jan 2015
Location: USA
Posts: 428
Chipper shredder importance of knives vs hammers

I'm looking to buy a chipper shredder for home use, probably 75% chipping 25% shredding. One unit I'm considering has 8.1 Ft lbs. torque, 2 knives and 5 hammers. The other has 9.5 Ft lbs. torque, 1 knife, and 8 hammers. All else equal (cutting diameter, for example), which would be a better fit for me?

If there's any other consideration I should be focusing on, let me know.
Sponsored Links
Old 03-30-18, 08:11 AM
Join Date: Nov 2007
Location: MI
Posts: 2,571
Those are probably the least important specs for choosing a chipper/shredder. I'd rather have a large heavy flywheel with one thick knife taking a big slice. That inertia will keep your feed rate up better than 2 or more knives on a light flywheel taking a nibble.
Also--a tall hopper with less angle down to the throat won't jam as often as a short hopper that's funnel-shaped.

In my opinion most of the home-use chippers I see for sale have the wrong decisions that favor compact, light, cheap.

What models are you considering?
Old 03-30-18, 09:10 AM
Thread Starter
Join Date: Jan 2015
Location: USA
Posts: 428
I'd say the leading contender is the DR 9.5. I assume from your flywheel comment that I should be able to see the flywheel but I don't know what I'm looking at.
Old 03-30-18, 10:27 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 18,119
It's a big hunk of steel to add mass to the rotating chipper/shredder assembly. Smaller, lighter duty machines don't have one and just rely on the mass of the knives, hammers and their support cage.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes