Lessmann 2019 GB FINAL

Optimise Brush Results The brush diameter and filling length are most important for the perfect brushing re- sult. It is therefore very easy to eliminate al- most all bad brushing results: Brushing effect too weak: • Increase the peripheral speed by increasing the brush diameter or the operating speed, but never exceed the maximum RPM rating. • Use a brush with shorter trim length. • Use a brush with larger wire diameter. For workinginwetcondition werecommend PA 6.12 as base. Please state on your order! Since the upcoming heat on wet applications is conducted, the peripheral speed can be set much higher than on dry applications. STA Steel Wire straight / crimped is developed in co-operation with wire producers, so that it meets our special requirements. This wire is alloyed with manganese in order to increase its toughness. Result is higher tensile strength and longer lifetime of LESSMANN-Brushes. STH Steel Wire High Tensile straight / crimped is most often used in Knotted Brushes, Deburring Brushes and Pipeline Brushes. Furthermore we offer this high tensile wire in our complete assortment. Above all it features through its tensile strength and high fatigue rates, what results in lifetime even for extreme brushing applications. STM Brass Coated Steel Wire For long lifetime plus high tensile strength and cutting performance. Best results in brushing and deburring applications. STL Cord Wire Brass coated steel wire corded. Longest lifetime for heavy duty brush applications e. g. debur- ring. MES Brass Wire (CuZn) is softer than steel wire. Among other applications brass wire is suitable for working with mild bleaches. It’s mainly used for processing of nonferrous metals. Brushing effect too powerful: • Reduce the peripheral speed by reducing the brush diameter or the operating speed. • Use a brush with longer trim length. • Use a brush with smaller wire diameter. Brush transfers burr: • Use a brush with shorter trim length. • Examine brush and work piece position. • Use a brush with wider face. • Use a brush with thicker wire diameter. Information for brushing on stainless steel materials you find at www.lessmann.com straight / crimped / knotted: Metal wires for brushes can be processed in brushes straight, crimped or knotted.Wire knots are always made with straight wires. Compared to a straight wire with the same diameter the wire knots are much stronger than the single wire. Crimped wires brace each other and therefore achieve a better stability in the brushes. PRODUCING QUALITY – BRUSHING THE CORRECT WAY Peripheral Speed v in m/sec. (please follow the max. rotary speed of the brush!) n [1/min.] Brush diameter d in mm/inches (RPM) 50 80 100 125 150 200 250 300 2 " 3" 4" 5" 6" 8" 10" 12" 1,000 4.2 5.2 6.5 7.9 10.5 13.1 15.7 1,500 3.9 6.3 7.9 9.8 11.8 15.7 19.6 23.6 2,000 5.2 8.4 10.5 13.1 15.7 20.9 26.2 31.4 2,500 6.5 10.5 13.1 16.4 19.6 26.2 32.7 39.3 3,000 7.9 12.6 15.7 19.6 23.6 31.4 39.3 47.1 3,500 9.2 14.7 18.3 22.9 27.5 36.7 45.8 55.0 4,000 10.5 16.8 20.9 26.2 31.4 41.9 52.4 62.8 5,000 13.1 20.9 26.2 32.7 39.3 52.4 65.4 78.5 6,000 15.7 25.1 31.4 39.3 47.1 62.8 78.5 8,000 20.9 33.5 41.9 52.4 62.8 83.8 10,000 26.2 41.9 52.4 65.4 78.5 12,500 32.7 52.4 65.4 81.8 15,000 39.3 62.8 78.5 20,000 52.4 83.8 25,000 65.4 Recommended Peripheral Speed for Brushing Application Peripheral Speed in m/s Application 15 20 25 30 35 40 45 50 With Filaments Removing Burrs 25 - 35 Cleaning Welds 35 - 45 Removing Scale 35 - 45 Polishing 30 - 40 Working on Plastic 15 - 20 With Abrasive Filaments Dry conditions 16 - 18 Wet conditions 25 - 30 Conversion mm in Inches and I.S.W.G. Brush diameter Millimeter Inches 25 1 " 50 2 " 75 3 " 100 4 " 125 5 " 150 6 " 180 7 " 200 8 " 250 10 " 300 12 " 350 14 " Wire diameter Millimeter Inches I.S.W.G 0.08 0.0031 44 0.10 0.0039 42 0.12 0.0047 40 0.15 0.0059 38 0.20 0.0079 36 0.25 0.0098 33 0.30 0.0118 31 0.35 0.0138 29 0.40 0.0157 27 0.50 0.0197 25 0.80 0.0315 21 Brush diameter (d) x x Peripheral Speed (n) 1,000 x 60 Peripheral Speed v = BRUSH FILLING MATERIALS AND THE CHARACTERISTICS TECHNOLOGY, MATERIAL AND SAFETY ROF / RO4 / ROL / RO8 Stainless Steel Wire ROF must be used when working on stainless steel. Material number (WNr.) 1.4301 (AISI 304) . This wire is resistant against corrosion and certain acids and bleaches. RO4 Premium-quality stainless steel wire. WNr. 1.4401 (AISI 316) RO8 High heat resistant stainless steel wire. WNr. 1.4860 . ROL Stainless Steel Wire with cord construction WNr. 1.4301/1.4310 ROH Stainless Steel Wire High Tensile This wire is characterized by a high tensile strength 2100 – 2500 and a long lifetime even in extreme applications. WNr. 1.4310 (AISI 301) Further information on brushing on stainless steel materials you find at www.lessmann.com Note: you are welcome to contact our technical contact persons. 11 10