Chip, Wood, Pulp & Alternative Fuel Rotary Feeders

Precision’s Rotary Feeder is a step above the competition! Whether your
material handling system is running wood, chips, pulp, alternative fuels
or another type of organic material, Precision’s Rotary Feeder’s stationary
hardened tool steel knife ensures that only uniform sized materials are
being introduced into the system. An airlock and a metering device all in one!



What Makes Precision’s Rotary Feeder Work




An 8-pocket helical rotor vane arrangement creates a scissoring action to shear off large pieces, which minimizes feeder jamming.


Application Specific

Every Rotor and Barrell are perfectly mated up to meet the specifications of the application. Precisely machined to operate within the specified temperature and at the optimum throughput.



The only truly rebuildable rotary valve in the industry! Built for outage to outage functionality. Minimal maintenance ensures this unit meets your expectations! Able to be rebuilt, refreshed and reused!


Upgrades & Accessories

A variety of upgradeable options exist so your new feeder can be perfectly equipped for your specific application.



Access door provides easy access to inspect clearances and to also provide knife adjustment.


Hardened Steel Knife

Equipped with a hardened steel knife, which is adjustable to maintain optimal clearance. The knife ensures a consistent material size is being fed into the system.


HD Bearings

Equipped with high load outboard tapered roller bearings, which are heavy-duty, industrial grade to ensure proper shaft alignment.


Surface hardened

Depending upon the size, optional surface hardening is available to provide additional abrasion resistance!

Rotary Feeder & Airlock

Key Advantages

Durable and abrasion resistant! Standard operating life is up to 1- year for abrasive materials and 5+ years for non-abrasive, organic products.
Precisely machined components and industry leading-tolerances minimizes leakage and blowby, which increases throughput and decreases maintenance costs!

Because each rotary feeder is manufactured to meet the specific demands of each individual application, there are a number of upgrades available ranging from 500 Brinell abrasion resistant alloys or specialty surface treatments.

Organic matter comes in all shapes, sizes, and moisture content. Neither of which effect the functionality of Precision’s Rotary Feeder. The hardened tool steel knives ensures that only uniformed material sizes are introduced into the production system.

Rotary Feeder & Airlock

Common Applications

  • Bulk Material Conveying Systems:
    -Screw conveyor
    -Belt conveyor
    -Pneumatic conveying.

  • Alternative Fuels

  • Wood Products
    -Wood chips
    -Wood bioproducts

  • Biomass Power Generation
    -Organic biproducts

  • Pulp & Paper Mills

  • Plastic Processing & Recycling

  • Any many others!!

Precision Machine & Manufacturing’s Focused Industries

Precision Machine & Manufacturing’s Focused Industries

  • Pulp
  • Cement
  • biomass
  • coal
  • Food
  • Metals

Designed For Performance.Built To Last.

  • Fabricated housing with an integral mild steel or Tri-Braze barrel; barrel thicknesses from 5/8” to 1-1/8” thick depending on feeder size.
  • The barrel is precision-bored to a concentric, known diameter to provide a true fit with the rotor
  • All barrels are overlaid with an industrial hard chrome, the typical thickness is 0.005” to 0.009” depending on feeder size – provides the first-line defense against abrasive wear.
  • Rotors are an 8-vane, helical arrangement with closed ends; leading edge of each rotor vane is tipped with 308 SS for wear resistance and each rotor end has an integral scraper to minimize material buildup.
  • The knife-seat is CNC-machined for precise location and a no-slip placement of the tool steel knife to assure good knife life and effective material shearing.
  • An access door in the feeder housing makes knife adjustment or replacement easy
  • The endbells include adjustable brass seals to minimize the possibility of pressurized air migration past the rotor end in pneumatic applications.
  • Heavy-duty Dodge piloted flange bearings installed outboard of the housing to isolate heat, moisture, and dirt from the bearings.
  • Nord, SEW, or Sumitomo shaft-mounted gear-motor drive packages for clean, safe installations providing direct application of power with options for variable speeds and other functions.
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Precision Machine & Manufacturing offers a Component Rebuild Program that can cost as little as 75% of a new component.

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Learn More
Precision footer logo




Precision Machine & Manufacturing offers a Component Rebuild Program that can cost as little as 75% of a new component.

Learn More

Why Precisions?

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sed quia non incidunt lores ta porro ame. -Steve Wison, Monarch Cement


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