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CHIPPING

Whole Log Chipper

Consistently high quality wood chips

acrowood-whole-log-chipper

Meet the Whole Log Chipper

The heavy-duty design of the Whole Log Chippers produce high quality, uniform chips. Acrowood’s research into how chip length, chipper geometry, speed, species, and spout opening combine to affect chip quality has resulted in chippers that produce 90% acceptable chips with few pins, fines, or overthick chips.

Whole Log Chipper Features

  • Produce more than 90% acceptable chips
  • Minimize pins and overthick chips
  • Increase ratio of large to small accept chips
  • Feed spout arrangement stabilizes logs
  • Chipper geometry optimized through research
  • Anvils fully adjustable through side access spout door
  • High quality chips are the result of optimized spout angles
  • Uniform chips produced with radial knives
  • Robust construction for 24/7 chip production for the pulp mill
  • Horizontal or gravity feed configurations available
  • Bottom or overhead discharge options
  • Choice of drives
    1. Synchronous motor
    2. Optional gearbox configuration with one or more motors

The above video demonstrates the Acrowood Chipper in production at a mill, the logs are being fed to the Chipper via a conveyor system.

View more Acrowood forest product processing equipment videos on our channel.

Acrowood Whole Log Chipper 01

Whole Log Chipper

The Acrowood newly configured Whole Log Chipper produces better chip quality are built to last and easy to maintain.

Acrowood’s research into how chip length, chipper geometry, speed, species and sprout opening combine to affect chip quality has resulted in chippers that product more than 90% acceptable chips, with few pins and overthick chips, and increased ratio of large to small accept chips.

Whole Log Chippers

A hinged access door provides excellent access to the chipper anvils.

More Features

  • Produces over 90% acceptable chips
  • Minimizes pins and overthick chips
  • Increased ratio of large to small accept chip
  • Feed sprout arrangement stabilizes logs
  • Chipper geometry optimized through research
  • Anvils fully adjustable through side access sprout door
Acrowood Whole Log Chipper 04

Whole Log Chippers are made of high-grade steel fabricated with precision machinery in the USA.

Whole Log Chipper Design

Changes in spout angle, knife edge angle, lambda angle, counter knife orientation and chipper speed have been optimized for whole log chipping.

Contributing to this outstanding chip quality is the new feed spout arrangement, configured to stabilize and direct logs. The “under the shaft” spout orientation has been combined with the proper angles of the spout,  knife and anvil.

Whole Log Chippers

Stainless steel slot and endliners are available

Chipper Built To Last

  • Reduce cost and maintenance time
  • Optional stainless steel slot and end liners
  • You may never need to rebuild your disc again or buy a spare
  • Simple and easy knife to anvil clearance adjustments

The Acrowood Whole Log Chipper has features that will reduce your costs and time required for maintenance. With the optional stainless steel slot and end liners, which resist corrosion and wear, you can avoid the costly downtime and expense associated with rebuilding your chipper discs. You may never bear the expense of having to buy a spare disc.

Engineered to Last

We see Acrowood Whole Log Chippers still in service after more than 30 years of operation.

Chipper & Coupling

Need to adjust the knife to anvil clearance, so very critical to the production of perfect chips? It’s a simple task with this chipper. The bottom and side anvils are fully adjustable and easily accessed through the swing-open chipper spout door.

disc chipper in the acrowood development-center.

The new design maintains the features proven on more than 400 chippers manufactured over the past 100 years. At Acrowood, the right geometry, the right research, and the right manufacturer combine to make a perfect chipper for perfect chips.

Specifications: Whole Log Chipper

Disc Diameter

Spout Diameter + Gravity Feed

Spout Diameter + Horizontal Feed

Maximum RPM

Approximate Weight (lb.)*

WK² (Lb.Ft²)*

78``

NA

20``

538

29000

61000

90``

26``

NA

450

40000

100000

98``

NA

26``

428

49000

160000

116``

32``

30``

360

800000

344000

Knife Count: 4 to 15 knife designs available, depending on the chipper size and application.

Horsepower determined on a per application basis.

*Reflects values for standard bottom discharge chipper.

Acrowood 116″ Horizontal Feed Whole Log Chipper

Whole Log Chipper (Top View)

Horizontal Feed Whole Log Chipper
Engineering diagram of (top view) of Acrowood Horizontal Feed Chipper

Whole Log Chipper (Front View)

whole-log-chipper-with-anvil-spout-casing-engineered-drawing-02
Engineering drawing of Whole Log Chipper (front facing view)

Whole Log Chipper (Side View)

whole-log-chipper-with-anvil-side-view-engineered-drawing-03
Engineering drawing of Whole Log Chipper (Side View).

No matter what kind of chip you process, no matter what capacity you want to run, Acrowood can engineer a system to meet your needs.

Have a question?

Ask the whole log chipping equipment specialists, we are here solve your woodyard challenges and mill processes.

How can we help?

Get in touch

Connect with our team, we have industry specialists all around the world to better serve your business.

Reach us

The Whole Log Chipper brochure

Request the whole log chipper machine brochure in PDF format for easy reading and printing.

GET BROCHURE

Case Study: Chip Thickness Screening and Chip Quality in the Pulp Mill

Modern whole log chipper designs have the capability of achieving accept chips in excess of 90%, with few fines, thins, and overs produced.

VIEW CASE STUDY

Case Study: Pulping System Sensitivity to Chip Quality

Whole log chippers are the second machine in the pulping process after debarking, the clean logs are rapidly feed into a chipper and cut to specific sizes and length for the pulping application.

VIEW CASE STUDY

Case Study: Chipper Upgrades and Replacements

Acrowood has been fortunate to have been involved in the redesign and upgrade of several chippers, both domestically and overseas. Some of these stories involve changes that have been relatively simple, and some have been fairly complex, involving replacement and redesign of fundamental components of the chipper.

VIEW CASE STUDY

View the Acrowood Corporate Video

Watch Video

Over a century of experience engineering equipment and machinery for pulp and paper, sawmill, panel board and biomass industries.

learn-more-about-acrowood-the-chip-processing-experts
view-acrowood-machines-gallery

View Acrowood machinery installations at sawmills, pulp and paper mills, panel board mills and biomass facilities all around the world

View Gallery

View the gallery of chipping, cracking and slicing machines, chip screening & material distribution machines, and rotary & batch debarker machines.

There really is a science to wood chips, It is really a specialty of the company.

The Whole Log Chipper is only one component in Acrowood’s complete line of chip processing equipment.

Request a download of our complete wood chip processing product line brochure

Download Brochure

Shipping Address

Acrowood Corporation
4425 S. Third Ave.
Everett, WA 98203
USA

Mailing Address

Acrowood Corporation
PO Box 1028
Everett, WA 98206-1028
USA
Tel: 1 (425) 258-3555
Fax: 1 (425) 252-7622

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© 2025 Acrowood | All Rights Reserved
  • Home
  • About
    • Executive Team
  • Products
    • Debarking Machines
      • Batch Debarker
      • Continuous Rotary Debarker
    • Chipping
      • Whole Log Chipper
      • Slant Disc Chipper
      • Veneer Chipper and Feedworks
      • Rechipper
      • Chip Cracker
      • Chip Slicer
    • Screening
      • Trillium® OSB Strand Screen
      • Disc Thickness Screen
      • HD Disc Scalping Screen
      • Dual Drive Suspended Rotary Screen
      • DiamondRoll® Fines Screens
      • DiamondRoll® Thickness Screens
      • DiamondRoll® Particle Screen
    • Distribution & Separation
      • Air Density Separator
      • Star Feeder
      • Screw Distributor
  • Development Center
  • Case Studies
  • Expertise
    • Pulp Mills
    • Saw Mills
    • Panel Board Mills
    • Biomass & Pellet Mills
    • DiamondRoll Shaft Wear [Assessment Guide]
    • Blacksmithing custom bolts the old fashioned way [Technical Article]
  • Contact
  • Jobs
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