Nicholson A5B Highspeed Small Log Debarker The Nicholson A5B is the fourth generation of tough, simple and fully automatic highspeed debarkers developed from the original Nicholson A5 Debarker design. The A5B is fully automatic and will debark logs of almost any species or configuration. The A5B is available in a 17 inch (432 mm) ring size designed for the world of highspeed small log debarking. The 17” A5B comes with Nicholson Fiberguard Feedrolls as standard equipment. Fiberguard Feedrolls can also be retrofitted to many older A5 models. The A5B incorporates all of the hundreds of engineering developments made over the life of the highly successful A5 and A5A series, and adds important new features like improved feedworks cylinder locations, a new compact low mounted direct feedworks drive option, discrete/automatic ring pressure control, central grease points and more. A5 technology has been proven year after year in over 665 (17 May 2005) sawmill, chipmill and boardmill installations around the globe. No other modern highspeed debarker can offer this level of worldwide testing, development and proven reliability. Do you need verifiable performance figures for your specific application before deciding on a debarker? We can offer you hundreds of real case histories, not just promises. Nicholson has been the first to provide clean fiber-saving debarking at high feedspeeds. We offer systems that combine log-diameter-sensing knife arm pressure control, diameter-variable feed speeds, diameter-variable ring speeds, special arms and tips, and other technological innovations to give you the very finest highspeed debarking available today. The A5B is extremely versatile. Its rugged and compact single unit design is perfect for tight installations, retrofits and portable applications. The proven Nicholson Air Seal ring and Air Cell ring are both available on the A5B. The Air Seal rings lets you adjust debarking pressure or open and close the knife arms, during debarking. The environmentally and economically sound Ring Oil Recirculation is available on the Air Seal ring as an option. The Air Cell ring is a simple, fixed pressure design that excels in handling material of consistent size and condition. Pressure for all air cells is set at anyone of six fitting with the ring stopped. The A5B uses simple, rugged and thoroughly proven mechanical technology. Special design features like pullout rings, easy to access central lube sites, gear/roll position locks and interlocked access doors make service quick and safe. The Nicholson A5B is the proven highspeed small log performer.