Table of Contents - Rainbow Precision Products, Inc.

Product PreviewPower Max ®Variable speed drives demand a unique combination of belt features. Because these belts are wide in proportion totheir thickness, they must have extreme crosswise rigidity. Without it, the belt will dish in, throw the tensile cords out ofalignment, and affect speed control. Variable speed belts also require lengthwise flexibility to bend around small sheaveswithout excess strain that will shorten belt life.Bando’s cog design solves these potential problems by providing excellent flexibility, without sacrificing the crosswiserigidity required to properly position the tensile cords. The result is precise speed control, a wide range of speed ratios,and long, dependable service.➀➁➂➃➄Refer to pages 28 through 30 for size and list price information.Construction FeaturesTop Fabric — Flexible fabric provides excellent oil and heatresistance.Insulation Section — This section protects the high strengthtensile cords and houses chemical bonding agents that, activatedby heat, fuse the cords together to prevent separation.Tensile Cords — Tough polyester cords won’t fatigue —even with repeated shock loads. Cords are specially treatedto resist stretch and to carry high horsepower demands.Compression Section — Fiber reinforcement in this sectionis transversely aligned to provide maximum crosswise rigidityfor tensile cord support, while allowing for extreme flexibility.Cog — The cog design provides flexibility to reduce heatbuild up, minimize cracking, give wide speed ranges, andmaximize belt life.Rib Ace ®Bando’s Rib Ace ® , an ultra thin, ultra flexible belt with ribs in the bottom that mate with sheave grooves of a similarshape, offers distinct advantages which include:• The use of smaller, less costly sheaves • Speed ratios up to 40 to 1• Smoother, vibration free performance• The use of small backside idlers• High speed capability• Serpentine drive design capability• Space-saving, compact design• Shorter center distance drives• Higher efficiency than conventional V-belts• Molded belt with ground rib performanceBecause Rib Ace ® is a single belt, there is no wasted space between sheave grooves, no matching problems, and nobelt turnover. This V-ribbed belt also improves performance on 1/8 turn, 1/4 turn, and mule drives.➀➁➂➃Refer to pages 31 and 32 for size and list price information.Construction FeaturesBacking — Flexible, oil and heat resistant backing guardsagainst abrasion and extends service life.Tensile Cords — To distribute the load evenly across thefull width of the drive, Rib Ace has a strong tensile corddesigned to carry high horsepower and shock loads withoutstretching.Compression Section — Synthetic rubber is compoundedto provide firm support for the tensile cords, with flexibilityto dissipate heat for long belt life.Ribs — Durable, heat resistant truncated synthetic rubberribs are formulated to prevent wear and cracking on smalldiameter sheaves.6