HOW BIG OF A LOG WILL A PETERSON 4700B GRIND

The Peterson 4700B has a 60 x 37.5 inch feed opening , so it can take logs up to about 60 inches wide and 37.5 inches thick at the opening, depending on how they’re presented and the material shape.

Quick Scoop

In practical terms, that means it’s built for very large whole-tree or slash material , not small firewood-sized rounds.

What the spec says

• Feed opening: 60 x 37.5 in.

• Use case: high-volume horizontal grinding of large wood waste and biomass

• Note: the actual maximum log size you can feed safely can be less than the opening, because irregular forks, butt flare, and weight can change what will physically go through

Plain-English answer

If you’re asking “how big of a log,” the safest concise answer is:

About a 5-foot-wide by 3-foot-thick opening at the infeed.

That’s the best spec-based answer for the 4700B.

If you want the real-world limit

The real workable log size also depends on:

• Whether the log is straight or crooked.
• How heavy it is and how it’s staged.
• Moisture content and wood species.
• Whether you’re feeding rounds, slash, or whole trees.

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