Technical Manual for Ribbed Belt Drives

Product DescriptionDimensions - Construction - Characteristics - ApplicationsConstructionOptibeIt-RB Ribbed Belts consist of● Belt top surface● Tension cord● Base compoundParallel V-shaped ribs of a wear resistant polychloroprene compoundform the base of the belt. The polyester tension cord, of highquality and extremely low stretch, is embedded in a rubbercompound and extends across the entire width of the belt. The belttop surface with fabric laminates, the tension cord and the basecompound are bonded together by vulcanisation.Standard SectionsPH≈ 2.51.60CharacteristicsThe Optibelt-RB Ribbed Belt combines the high flexibility of the flatbelt with the high power transmission capability of the traditionalV-belt. Further advantages of this type of belt are the small sectionalthickness and especially good frictional power transmission withminimal slip. Small pulley diameters, low stretch and extremelylarge speed ratios are additional benefits.Since the ribs of the Optibelt-RB Ribbed Belt almost completely fillthe pulley grooves, the resulting large contact area ensures a highdegree of efficiency and a constant speed ratio. Belt turnover in thepulley is eliminated because of the single belt characteristic. Evenat high speed the drive is quiet and vibration free. Due to the useof special materials, ribbed belts are resistant to most oils and willwithstand high temperatures.Only 5 sections are needed to cover a wide range of powertransmission applications. The different sections are indicated bythe letters PH, PJ, PK, PL and PM.PJPK≈ 3.32.34Applications≈ 4.5Whilst sections PJ, PL and PM are used on general purposeindustrial machinery, section PH is preferred for domestic appliances.Section PK is mainly used in the automotive industry.Drives of this kind require special calculation methods and shouldbe requested separately.3.56PL≈ 7.04.70PM≈ 13.09.405