Debarking Frozen Wood Debarking frozen wood can be difficult, hard on the logs and hard on equipment. To succeed at it we have developed and extensively tested new technologies. We use fast responding External Link Air Seal and Air Cell rings so the knife tips follow the surface of the log precisely and don’t bounce or dig into the valuable fiber. We use special square knife tips that can be quickly rotated to a new sharp carbide so we are able to use lower debarking pressures. Nicholson Fiberguard Feedrolls also improve frozen log handling by providing superior feeding and protecting valuable surface fiber. Our proportional knife arm pressure system adjusts knife arm pressure to suit each specific log diameter and bark thickness.  Larger logs have thicker bark and require more pressure.  Smaller logs, with their thinner bark layer need lower pressures to avoid damaging wood fiber. Many of our installations in the north debark Spruce, Aspen, Maple and Birch at temperatures to –40 Deg. F (–40 Deg. C). We have also had one client that was able to continue debarking with a Nicholson Redimill diesel powered portable system at temperatures of –62 Deg. F (–52 Deg. C). Most of these are small log operations that must meet their customer’s limits of .5% bark content in the summer and 1.0% bark content in the winter. Feed speeds up to 350 feet per minute in winter are achieved. If you have a frozen wood application and you want to improve your performance and lower your maintenance costs, please give us a call so we can give you some real case histories and solid performance estimates for your exact situation.