But while the function of a timing belt is primarily synchronization, industrial synchronous belts have evolved into a power transmission system that rivals roller chain. Parallel misalignment is generally not a critical concern with synchronous belts as long as the belt is not trapped or pinched between opposite sprocket flanges and tracks completely on both sprockets. Optibelt technical manual rubber timing belt drives. Timing belts, toothed belts, cogged or cog belts, and synchronous belts are nonslipping mechanical drive belts. This engineering section provides general engineering information for synchronous belts and sprockets or pulleys which are useful in general drive design work. If the current airflow is insufficient, a synchronous belt drive could. The advanced belt design will allow the product to provide more horsepower per dollar than traditional synchronous belt drive products. They are made as flexible belts with teeth moulded onto their inner surface.
The ht500 synchronous belt is designed to offer the energy efficiency of a synchronous belt drive in a compact design. After alignment and tension of a synchronous belt drive are set as accurately as possible, a simple test is used to make sure the system is lined up properly. For example, if the current airflow is satisfactory in an hvac application, a synchronous belt drive would use less energy to do the job. Already established as a supplier of life of engine synchronous products, through continued innovation, gates has now developed and launched the gd450 belt, which represents even longer lifetime and enhanced package reduction options. The powergrip gt3 system, featuring a modified curvilinear belt tooth profile, provides timing. Variations on this theme are now offered by many of the belt drive manufacturers. Replace vbelts with cogged or synchronous belt drives. This twopage abstract provides tips for plant managers on improving performance of industrial motors by designing belt drive transmission systems for high efficiency, low noise and maintenance, and cost savings. This curvilinear tooth design improves stress distribution, and overall loading on many belt drives can be higher in. Step 4 select belt width procedure belt width selection tables pages 46 through 53, 58 through 60 and pages 105 through 114 show the horsepower ranges of stock belt widths. The tooth shear strength is greater than the strength of the tensile member when at least six belt teeth are in mesh with sprocket grooves.
The terms timing belt and synchronous belt are often used interchangeably to describe a class of toothed, positive drive belts. The manufacturing process allows for equal load capacity on both sides of the belt, a feature. For the multiple belt drive, always change all belts at the same time. Increased drive design options new, improved synchronous belt lines. Braking systems do not use gates belts, pulleys or sprockets in applications that depend solely upon the belt to slow or stop a mass, or to act as a brake without an independent safety backup system. Molded teeth provide excellent shear resistance and resistance to tooth jump.
If you need additional information, contact gates power transmission product application. A single vbelt could also be hung in an outside sheave groove from the upper shaft to indicate the proper position of the lower sheave. The latest innovations in gates synchronous drive systems are two redesigned and reengineered belt and sprocket lines. A synchronous toothed belt may make louder noise during highspeed rotation. Gates synchronous belts 2 powergrip gt3 design features 4 powergrip gt3 belts 6 powergrip htd belts 8 powergrip classical synchronous belts 10 tools 12 belt sizes drive calculation guide 2 belt drive selection procedure 21 1.
These drives are subjected to continuous and large accelerations and decelerations. White paper page 6 of 8 gates corporation, denver, co 80202, 18007776363 the synchronous alternative the engineers who developed the original timing belt, which was a light duty rubber synchronous belt for the. Access gates chart for easytoread images, sizing, specifications, product i. Gates synchronous belts transmits power via torque from drive sprocket to one or more driven sprockets in a specific configuration installed at recommended tensions. Toothed belts are used in a wide array of in mechanical devices, where highpower transmission is desired. They are the clear winners in overall cost, drive selection options and performance when compared to any other belt drive products on the market today. Gates has the total synchronous belt drive system solution. Design flex pro drive detail report this pa note revises vol. The options are roller chain drives, v belt drives and synchronous belt drives. Design flex pro drive detail report gates corporation. A single v belt could also be hung in an outside sheave groove from the upper shaft to indicate the proper position of the lower sheave. Gates lifetime warranty gates stands behind its customers and its products. In addition, the thinner cross section of a synchronous belt requires less energy to bend and according to gates, if the current airflow is satisfactory in an hvac application, a synchronous belt drive would use less energy to do the job. For product details, follow the associated page number references to go directly to that section.
Classical typesuper torquemegatorque timing belt design manualp217. The options are roller chain drives, vbelt drives and synchronous belt drives. Gates belt drive systems are not intended for aircraft use. Synchronous belts are often driven by stepping motors. Vbelt and synchronous belt system training mechanical. It is designed to run over matching toothed pulleys or sprockets. The gates poly chain gt carbon belt drive systems manual includes the product specifications, engineering, and technical data necessary to design your custom poly chain synchronous belt drive.
Gates, which was designated as gates powergrip gt 3 belt drives. These pulleys are available in a wide variety of bores, bushings, configurations, belt widths, and tooth counts. Gates belts have different drive design procedures from metal chains, the tensile strength of a belt when compared to the tensile strength of a chain should only be a part of the design process. Gatesfacts technical information library gates corporation. Tb woods synchronous plus synchronous drives offer the added flexibility of a dual sprocket design that features both metric and standardtapped holes coupled with a high capacity synchronous plus belt. This manual covers vbelt drives used primarily for power transmission in industrial applications. Doublesided timing belts for drives with reversible speed can be delivered. Vbelt and synchronous belt system training mechanical drives training back to mechanical amatrols portable mechanical drives 2 learning system 99me2m covers the maintenance, installation, and alignment of vbelt and synchronous belt drive systems.
White paper page 6 of 8 gates corporation, denver, co 80202. Total tension required in a belt drive depends on the type of belt, the design horsepower, and the drive rpm. Making light work of belt tensioning its universally recognized that proper synchronous belt tension is key to efficient drive operation. Design flex pro is a free drive design program provided by gates. One or more vbelts may be used on a drive, as required, to transmit the horsepower load. Poorly maintained vbelt drives may be up to 10% less efficient. Tips on working with synchronous belt drives design world. Section 2 gates powergrip gt 3 belt drives the powergrip gt3 belt drive system is an advance in product design over the gates older, standard htd system. This manual covers v belt drives used primarily for power transmission in industrial applications. Quickly, easily, and accurately design industrial synchronous or vbelt drive systems that fit your specific design parameters, so you can determine every potential belt drive solution for your specific application without wasting any time or money. Synchronous belt quickselect use this quickselect product guide to determine the belt drive system that best meets your needs.
May 06, 2009 the second generation of synchronous belt drives is currently marketed by gates corporation, and dubbed htd, an acronym for high torque drive. Potential failure mode and effects analysis gates design center. Belt tensile break drive fails to function high dynamic peak drive loads greater than design input value and belt width capability 2 drive design software and ptpa support line. When designing synchronous drives, there are several special circum. Gates poly chain gt carbon belt offers enhancements that exceed the current marketleading poly chain gt 2 belt, including. Gates offers premium synchronous belts and vbelts specially designed for equipment and machines in a wide range of environments, including food processing, pharmaceuticals, and fitness equipmentand can even be found inside redbox machines. This twopage abstract provides tips for plant managers on improving performance of industrial motors by designing beltdrive transmission systems for high efficiency, low noise and maintenance, and cost savings. Gates industrial power transmission product catalogue. And where newergeneration belts drive loads, proper. The teeth on a synchronous belt are spaced so the root lies at the pitch line. The belts run over matching toothed pulleys or sprockets.
As a result, the synchronous plus drive offers a significantly higher horsepower rating at the standard industry price. Use the standard cord sensor to reach inside cramped compartments where conventional methods would. Determining belt speed for each of the drive systems shows that the belt speed does not exceed 6500 fpm and can be considered further. This belt represents yet another key milestone in synchronous technology. Synchronous belt drive cost considerations conclusion additional resources introduction plant maintenance managers and design engineers have basically three broad options when making a drive conversion or when designing a new power transmission system. Sep 01, 2001 parallel misalignment is generally not a critical concern with synchronous belts as long as the belt is not trapped or pinched between opposite sprocket flanges and tracks completely on both sprockets. This positive toothgroove engagement prevents a synchronous belt drive from slipping. Energy efficient, high torque belt drive system ht500 75 hp drive example energy savings annual energy use x 1 n1n2 our value added solution will not only save you time and money short term, but many years thereafter. Gates new poly chain gt carbon belt is part of a powerful synchronous belt drive system that outperforms roller chain in even the most demanding hightorque applications. This belt design uses a curvilinear profile for the belt and sprocket teeth. Powerhouse belt drives gates synchronous drive systems. Synchronous drive belt the dual synchronous belt yields proven performance in a double sided design providing maintenancefree synchronization from both sides of the belt.