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Tagged With: polyurethane

Custom Colored Polyurethane Parts

Polyurethane is one of the main plastics used for sawmill applications. Everything as diverse as kraftmill safe machined U-channel, to sprockets, Shark Fin lugs, and bearings. Softer urethane being used for Redco Deadplate or other shock and vibration dampening products. Most of the time for customers color isn’t important but sometimes a mill manager or … Continue reading »

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Sawmill Bushing and Bearing Materials

Plastics are excellent bushing material that replace metal. In contract to metal, plastic bearings are self-lubricating, require less grease or maintenance, and last longer. Typically six different plastic materials could be used as these bushings and each will be described. Redco Polyurethane: Called “Redco 750 XL” this is a lubrication impregnated polyurethane bearing material. It’s … Continue reading »

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Custom J-Hooks and C-Bars

Polyurethane J-hooks and C-bars are a sawmill staple, with the plastic used usually being 75D hardness polyurethane. These hooks and c-bars are typically molded which means there is an upfront tooling cost; however, the per-part price is much lower than a machined part. Redwood Plastics and Rubber can manufacture whatever hook profile you need but … Continue reading »

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Product Spotlight: Redco SPS-2000

Redco SPS-2000 is a remarkable plastic that has excellent properties and is far from being one-dimensional. The product was specifically developed to be used for mills supplying fiber to kraft pulp mills (or for use at those mills themselves). SPS-2000 dissolves in the Kraft cooking process and will not contaminate the fiber. This itself makes … Continue reading »

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SFK Housings and Custom SN Inserts

We get requests from customers disappointed that Redwood Plastics and Rubber does not yet carry SN inserts for the newer (and larger) SKF bearing housings. The question “why” is pretty easy to answer: the mold for each size would cost upwards of $6,000 and demand simply isn’t out there yet. We would have to be … Continue reading »

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LSI Plates

If you’re considering a custom lug or hook you need to consider an LSI plate. This is an insert between the Redco 750 polyurethane which provides added sheer strength for the hook or lug. They are not always necessary as some designs build up a “bump” of extra urethane around the mounting holes, which provides … Continue reading »

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Product Spotlight: Roller Chain Diverter Gates

Roller nose diverter gates are a popular sawmill product. They’re available manufactured out of two materials, with the bulk being natural UHMW. They are; however, also available made from sturdy Redco 750 polyurethane. The nose kit with the roller is actually a popular, but optional, addition. It consists of two laser plates with a UHMW … Continue reading »

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Shark Fin Replacement Parts

The Shark Fin Board Turning System (www.Sharkfinsystems.com) has plastic components manufactured from durable Redco polyurethane. Even though these components are high-wear and take significant impact, they will eventually require replacement. What you may not know; however, is that through the many years the Shark Fin System has been used the fin-shaped lugs have undergone several … Continue reading »

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Product Spotlight: Redco Pusher Lugs

The humble plastic pusher lug is a workhorse of the sawmill industry. Plastic pusher lugs, made from Redco polyurethane or UHMW, offer excellent impact and low-temperature tolerance (especially UHMW). These lugs will not mark the wood and also absorb shock. Being lighter than metal, these lugs reduce the amount of power required to move the … Continue reading »

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SPS-2000 vs. Synsteel

We often get asked about the difference between SPS-2000 Kraftmill safe polyurethane and Redco pulp-safe Synsteel UHMW. In many cases, customers think they’re equivalent products except one happens to be made from polyurethane and one happens to be made from UHMW. This is not correct! The materials are for two different applications. SPS-2000 is a … Continue reading »

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