Sharp Chain bed

One custom solution supplied by Redwood Plastics for sawmills is the sharp chain bed. The plastic bed (made of UHMW or nylon) replaces a metal bed and results in less wear on the chain. Lubrication requirements are reduced by up to 75%. In order to manufacture the bed, we require either a dimensioned technical drawing or a sample of the existing bed shipped to us to measure and copy into plastic and would, of course, need to know what type of sharp chain is being used.

For more information, contact Redwood Plastics.

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UHMW vs. Steel Flights

Many plastic applications in sawmill and planarmills that we promote here are innovative solutions that are readily noticable: bushings made of proprietary materials, the Shark Fin System, Hi-Temp kiln cart bushings, and urethane Deadplate. Solutions which stand out amongst other equipment in the mill. However, one application that does not get enough attention are UHMW polyethylene conveyor flights. These flights are often made of steel but UHMW is an excellent replacement for several reasons:

-UHMW is strong, will not break when flexed

-More abrasion-resistant than steel

-Reduces power needs

-Chemical resistant and will not rust

-Sanitary as USDA/FDA/AG approved materials are available

-Economical

-Moisture resistant

-Self-lubricating

In the case of Redwood Plastics, we can manufacture these in house at our branches without needing to have these done at our central manufacturing location. This cuts down on freight and lead time costs meaning the flights are very cost-effective. UHMW will outwear, outlast, and outperform steel flights and is an obvious replacement at your mill.

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Kiln Wheel Bushings: Order Them Right

Kiln Wheel Bushings are an excellent nylon application for lumber kilns. Blue (heat-stabilized) nylon is practically synonymous with kiln wheel bushings, though phenolic laminates also have a large footprint with this application. Metal has a problem with seizing in this application, which is why plastic is so suitable. If you’re looking for a quotation you need to specify five things: Kiln wheel housing dimension (KWHD), shaft size, length, Type (A,B or C) and quantity required. The “Type” refers to whether or not a grease groove is part of the bushing and if so, what type of groove.

Redwood Plastics has developed a new kiln wheel bushings use a proprietary plastic we’ve worked on for the last three years just for this application. This is a yellow, heat-stabilized plastic with advanced wear and dry running lubricants. They greatly outwear the traditional blue or oil-filled green bushings. For more information check out our new kiln wheel bushings here.

Supplying the information above will make your quotation go smoother and help your distributor supply you with the most accurate quote possible. For your questions about kiln wheel bushings or a quote: contact Redwood Plastics.

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Idler Sprockets – 3 Reasons Plastic Is Better

Sprockets keep things moving in the mill and while plastics offer advantages over metals in countless applications the humble sprocket is where plastics can help the most. And there are three big ways plastics save your mill money over their life-cycle and reduce maintenance downtime.

1.) Reduced Weight

Redco™ 750 sprockets are up to 50% lighter than comparable metal (steel) sprockets. This means they are easier to install, without compromising strength, and leads to additional benefits.

2.) Less Power Consumption & Wear

Redco™ 750 sprockets are lighter and run smoother with the chain. This results in reduced horsepower requirements saving on electricity costs. An additional benefit is reduced noise and we all know how noise limits can be strictly enforced. Much of this is due to the elastomeric properties of the polyurethane material. What this means is that although the sprockets are hard, solid material – the sprocket is still softer than steel and will reduce chain wear (and also be less noisy).

3.) Corrosion Resistance

This is an advantage you might not consider: metal rusts and corrodes and plastic doesn’t. Let’s be honest, in many applications this corrosion doesn’t present problems right away – but sprockets would be an exception. Rusty or corroded teeth or hubs would greatly increase wear on chain and also likely spike the power requirements of the chain. Plastic sprockets won’t do that – because they’ll never rust.

For information or quotation on Redwood Plastics’ sprockets please contact us.

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Simplicity and The Shark Fin

The venerable Shark Fin system has been a proven solution for decades in mills across North America and the world. Shark Fin systems have been installed as far away as Brazil, Australia and Russia. The Shark Fin is a board-turning system that works on gravity alone. No electricity, wiring or power is involved. lugs affixed to chain, usually 81x or H71, push the boards into star wheels that flip them. The system takes board turning away from graders, where manual flipping can lead to injury, and can be designed for 1,2,3, or 4 grader set-ups.

The fact that the Shark Fin doesn’t require power and is integrated into the existing mill setup is indicative of why it’s so valuable. In an era of computers and complicated mechanical systems in sawmills, the Shark Fin is a solution that rarely requires downtime and is easy to install and use. These days the systems are often requested by hardwood manufacturers as the speed of their set-up corresponds very well with Shark Fin’s requirements. As the OEM for the Shark Fin system, Redwood Plastics supplies both the complete systems and the spare parts. For more information check out our website just for Shark Fin: www.sharkfinsystems.com

Or watch our 10 minute video:

 

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Dissapator Channel – Stop The Shock

Sometimes an excellent solution to a maintenance problem is available – but the problem is nobody knows about it. Redco™ Dissipater Channel is one such product. Unique to Redwood Plastics, the Dissipater Channel is for the stretch of the mill where logs first hit the deck. The maintenance problems that occur are shock, crystallization of welds on the existing equipment, crumbling concrete foundations, and operator booth vibration. The Dissipater Channels supplied by Redwood are often 6-8′ in length and are supplied fully fabricated including the steel trough and Redco 70A urethane “sandwich”. There are profiles for most types of North American chain.

These channels vary in cost and significant quantity discounts apply if 10+ are ordered. For pricing or more information contact Redwood Plastics.

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UHMW Tail Drum Idlers

redco-uhmw-tail-drum-idlerPlastics offer innovative solutions but often not in obvious places. In the sawmill industry, long link drag chain usually rolls over fabricated metal drum idlers. The problem with metal-to-metal contact is premature chain wear and unnecessary noise. Redwood Plastics has developed a solution made from natural-white Redco™ UHMW.

Redco™ UHMW is slick and strong, allowing the chain to glide over the drum with no wear, reduced noise and with no bearing required. An added advantage of the UHMW material is its slickness compared to metal resulting in the chain gliding over the drums even if they seize.

You can see a video of a drum in application here:

 

For more information on this or other sawmill applications, contact Redwood Plastics today.

 

 

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Titanium Strength

We’ve hinted at the applications for Redco Titanium UHMW in previous articles here (such as the Titanium option for chain channel). However, we wanted to highlight the material specifically as there are many applications in saw and planermills that would be better served by replacement with Redco Titanium.

Redco Titanium is simply the slickest, strongest most dimensionally stable UHMW grade. It handles more impact and abrasion than the more commonly used reprocessed and virgin UHMW and is fully UV-stable. Titanium will survive in environments where other UHMWs wear through too fast leading to increased downtime and lower profits. Applications include: wear strips, liners, flytes, cyclones, chain channel, and much more. As a premium material, Redco Titanium will simply outwear and outlast competing materials while reducing maintenance costs and downtime.

To download a free copy of the Redco Titanium brochure click here.

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New Sawmill Catalogue

Redwood Plastics, the managing company of 4sawmills.com, is close to releasing our new Sawmill Products Catalog. This is a large undertaking by our Marketing Department. However, sawmills and planermill applications are Redwood’s core business and with so many parts developed over four decades the catalog provides a concise, single piece of literature that highlights many common applications we supply solutions for.

The catalog includes:

-An overview on plastic bushing materials

-Kiln cart bushing information including standard sizes and how to request a quote

-Chain channel and Oregon bend profiles

-“New style” saw blade carriers

-FRP grating information

…And much more

Interested? Download it for free right here.

Redwood Plastics

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Don’t Get “Pigeonholed”

One of any actor’s biggest fears is to be typecast in a particular role. The same could be said for industrial plastics in sawmill applications because for decades plastics have enjoyed success in a few specific applications: hooks, lugs, wear guides and bushings/bearings. Maintenance Managers and purchasers tend to only think of plastics in sawmill/planar mills in reference to those applications. The reality is when issues such as noise, shock, wear and abrasion exist anywhere in the mill – industrial plastics can likely supply a cost-effective solution that is successful over the long-term. One recent article on this website introduced our new nylon bushing material for kiln cart bushings replacing the traditional “blue” material. Customers have used blue nylon for many years and in some cases, specifically northern areas where bitter cold is an issue, kept using the material begrudgingly not knowing there was a better solution.

Knowledgeable distributors should be able to analyze an issue you’re dealing with and work with you to select a plastic solution that will solve the problem. A test is required, but careful selection and proper installation of a part should result in drastically reduced maintenance downtime and part and equipment damage or replacement. In areas where shock or impact are a factor, urethane Deadplate may be the solution. If wear is involved, a custom wear guide may be in order. We have even developed a cold-weather formulation for sorter hooks.

When it comes to solutions to your maintenance needs – don’t pigeonhole plastic to old applications. Contact us today to discuss your maintenance needs.

Redwood Plastics

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