The Benefits of Nylon Sorter Sheaves

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Swapping out customer’s existing metal sorter sheaves for our nylon sheaves is a typical sawmill application for industrial plastic. But why should you consider this investment? The answer comes down to the fundamental properties of nylon and the benefits it offers to your mill. Unlike most metals, nylon sorter sheaves will not rust and they are also lighter and easier to install. They are commonly available in a dark grey “moly-filled” version of nylon plastic called Redco MD but can also be had in oil-filled grades permitting less lubrication. Redco MD’s moly filler provides excellent wear properties on lower rotation applications. The plastic is long-lasting and requires less maintenance. While a press fit bearing can be supplied, the material itself is also a fantastic bearing material so a simple thru-hole for the bore is usually the most economical.

The benefits to your mill are:

  • Reduced maintenance
  • Less changing of parts
  • Save money in the long run

For assistance with your sorter sheaves please contact Redwood Plastics and Rubber.

 

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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 there are other modifications to these hooks that can be done to suit customer’s needs. Firstly, a grit surface can be provided which increases the grip characteristics of the hook. LSI (steel later plates) are commonly embedded in the slider block at the top where the hook gets bolted in to provide reinforcement. In addition, the hooks can be manufactured out of SPS2000 which is kraftmill safe.

The colors of the hooks can also be customized (does not cost additional unless it’s a non-standard colour). Other potential additions include adding a screw for metal detectable properties or embedded lubricants.

For assistance or quotation on your plastic hooks or c-bars please contact Redwood Plastics and Rubber.

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Oil-Impregnated Plastics

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One of the common advantages of performance industrial plastic is that, when the optimal material is used, they reduce maintenance costs and equipment downtime. This results in substantial cost-savings and, overall, increased profits. Customers ask – how do plastics result in less maintenance or downtime? One common part of maintenance when it comes to bearings, gears, sprockets, and most metal parts is the requirement to grease. Certain plastics require this as well; however, the fun of plastics is that we get to play with formulations.

Many of the plastics that would be used in dynamic applications can be produced with liquid lubricants. This ability to impregnate plastics with oil reduces friction and the need for greasing. This is very valuable in cutting down maintenance costs; however, it’s even better when it comes to parts that are operating in difficult to access workspaces. Having lubricants in the plastic reduces the wear on them and can also increase part life. The changes in cost for lubricant additives are nominal, between 15-30% depending on the plastic but the added benefits are worth it!

For Redwood Plastics and Rubber, playing with formulations for their nylon and Tuffkast line is easy and can allow creativity. For example, we can combine the excellent wear properties of the moly-filled nylon with oil. Or, we could combine an oil-filled Tuffkast with a UV-inhibitor. Sometimes lubricants are not even required for better slickness and higher wear, for example replacing traditional reprocessed UHMW chain channel with Redco Titanium.

For more information how lubricated plastics can help your sawmill please contact Redwood Plastics and Rubber today.

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Product Spotlight: Redco SPS-2000

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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 it an excellent material but there are advantages far exceeding just being kraftmill safe. Firstly, it has the lowest coefficient of friction of all polyurethanes. This makes it very slick. It takes heavy load (2500 PSI) and is also wear and abrasion-resistant. SPS-2000 is oil & solvent resistant and has high dimensional stability.

Applications for this plastic are wide and should be even more widespread. SPS-2000 functions very well as wear strips, liners, flytes, hooks, or virtually any other application requiring a “hard” plastic. An exception would be bearings where the similar lubricated 750XL is available. Like other urethanes, SPS-2000 is easily molded into custom parts.

For more information on how Redco SPS-2000 can benefit you mill, contact Redwood Plastics and Rubber.

 

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On-Site Sawmill Audit

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Are you a purchaser or a maintenance manager at a North American sawmill? Are you curious how performance plastics might be able to positively affect your bottom line and lower costs such as you’ve read on this website previously?

While we can only offer it in select territories, Redwood Plastics and Rubber’s team of technical sales people are willing to come to your sawmill to discuss your needs and audit your mill’s current performance. We would have you take us for a tour while conversing about maintenance and productivity issues you’re dealing with. Along the way we would keep our eyes open for areas our products might be able to assist as well as quickly spot locations where some of our more standardized products such as kiln wheel bushings, sprockets, and chain channel might fit in.

Our focus is on:

  • Reducing maintenance costs/downtime
  • Increasing productivity
  • Reducing energy requirements
  • Increasing part life
  • Increasing profitability

When it comes to pulp mills we can further drill down to the benefits of our pulp-safe plastics both SPS-2000 urethane and Redco Synsteel. To discuss the potential of an on-site sawmill audit please contact Redwood Plastics and Rubber.

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Simple Nylon Pulleys For Sales Online

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Do you have a sawmill and are you in need of some simple sheaves/pulleys? Redwood Plastics and Rubber now offers an online store for quick purchase of a simple pulley. You need to know the following information:

-Diameter

-Thickness

-Rope diameter or groove width

-Groove depth

-Bore diameter

The online site will also give you an option for “color” but this is actually choosing between two materials: Redco natural nylon or Redco MD (moly-filled) nylon which is grey. In most cases the MD is superior so default to that choice unless you have a good reason (such as food processing application). You can expect a 4 week delivery for the sheaves so plan accordingly.

To order the sheaves head to Redwood Plastics and Rubber’s site here.

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Cost-Saving And Time-Saving Measures For Kiln Bushings

Redco kiln wheel bushings are a cost-effective solution that have been proven over decades of use. However, the turnaround time on orders often reaches 3-4 weeks, which doesn’t work for emergency needs. Besides stocking up on extra bushings, there is the possibility of stocking plastic rod, which is available in both Redco blue (heat-stabilized) nylon as well as the Hi-Temp Yellow premium grade. While kiln wheel bushings are often provided with grease grooves, this is not necessary for emergency replacements. So as long as your mill has a simple machine shop, stocking rod could be a solution.

Alternatively, you can reduce the complexity of the bushings to make them less expensive. This also means eliminating the grease groove in most cases, as that machining time needs to be accounted for. As with most parts, buying in bulk will save money, not only on the per-piece price but will further reduce costs by limiting the amount of shipping you will need to pay.

For a consultation with a plastics expert to discuss your kiln bushing requirements, please contact Redwood Plastics and Rubber.

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UHMW Extruded Channel Profiles

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UHMW channel profiles are a very common sight at North American sawmills. The channel serves to reduce power requirements by making the chain slide easier. In addition, the soft channel reduces wear on the chain as it slides. This saves money immediately (in the lower power costs) and in the long-term with reduced chain wear. Customers are sometimes unsure what profiles are offered and ask for extruded profiles that do not exist. While custom channel can be machined, this is costly with poor availability and usually only available in black.

Redwood Plastics and Rubber’s extruded chain channel is available in “polygold” or yellow. While it is a reprocessed product, unlike the black reprocessed UHMW, the yellow is ‘clean’ meaning the regrind bits are not visible. They are stocked and sold by standard 10 foot lengths; however, 20 foot lengths are available on special order. The profiles are available for several chains, most notably 81x, H78, and C2060. The profiles are sold as simple U-channel; however, all of our profiles can be supplied with plug holes drilled and weld washer’s supplied and this service is provided at each and every Redwood Plastics and Rubber location. This service typically adds $10.00/length and 3-5 business days delivery.

Two important channel profiles of note are the C3 and C4. These are actually channel inserts, which mean they are extruded to fit into C3 and C4 steel channel respectively. They are not designed to be used separately without support.

For more information on Redwood Plastics and Rubber’s extruded UHMW chain channel profiles please click here to view a downloadable brochure.

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Solution Spotlight: PVC Strip Door – Keep The Cold Out!

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With the fall comes a bitter chill in many sawmilling regions and it’s consequently the time to invest in PVC strip door supplied by Redwood Plastics and Rubber. PVC strip door covers open entrances helping to keep inside work spaces warm and clear of drafts. The product also serves to protect machinery from dust and contaminants, reduce clean up costs, and decrease energy use. The product is widely stocked in 12″ widths though 8″ and 16″ widths are also available. The product is sold by the full roll.

  • Save Energy with Temperature Retention
  • Increase Productivity by Opening Traffic Flow
  • Reduce Maintenance & Clean Up Costs
  • Improve Working Conditions by Maintaining Ambient Temperatures
  • Improve Employee Safety by Reducing Noise and Increasing Visibility

For a quote on flexible vinyl for your sawmill please contact Redwood Plastics and Rubber.

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BL400 Dovetail Sawguides

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Sawguides made from Redco BL400 are one of Redwood Plastics and Rubber’s ‘standard’ products. Stock is kept in full lengths at both our Canadian and U.S. Manufacturing facilities allowing for quick turnaround on orders. This product is a graphite-filled phenolic laminate and offers incredible structural, dimensional, and wear properties. These guides are compatible with any grease, oil, and solvents that may be used on the saws and can take incredible pressure and frictional conditions. Standard lengths are available between 6-60″ with up to 96″ being available on request. In addition, if you want to make your own guides we can sell you just the material.

For more information or pricing on these guides please contact Redwood Plastics and Rubber today.

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