SKF Power Transmission belts

1 SKF Power Transmission belts2 ContentsForeword .. 3 SKF the knowledge engineering company .. 41 V-beltsProduct featuresSKF Wrapped Wedge and SKF Wrapped Narrow Wedge belts .. 8 SKF Xtra Power Narrow Wedge belts .. 9 SKF Wrapped Classical belts .. 10 SKF Cogged Raw Edge Narrow Wedge belts .. 11 SKF Cogged Raw Edge Classical belts .. 12 Industrial V and wedge belts .. 13 Selection guide for SKF V- belts .. 14 Service factors .. 16 belt cross section .. 17 Centre distance tables .. 20 Recommended standard pulley diameters for faster shaft metric ISO pulleys .. 36 Speed ratios with standard pulley diameters metric ISO pulleys .. 36 Recommended standard pulley diameters for faster shaft narrow wedge pulleys RMA.

2 38 Speed ratios with standard pulley diameters wedge narrow pulleys RMA 38 Correction factors .. 40 Power rating tables .. 41 Minimum installation and take-up allowances .. 63 Tensioning methods .. 64 Calculating belt tension .. 70 Special drives with idlers .. 72 Banded belts .. 74V- belt pulleys .. 75 Installation and maintenance .. 78 Troubleshooting guide .. 80 SKF V- belt tables .. 822 Timing beltsProduct featuresSKF HiTD belts .. 104 SKF Classical Timing belts .. 105 Selection guide for timing belts .. 106 Service factors .. 108 belt cross section .. 109 Centre distance tables .. 110 Recommended standard pulley number of teeth for faster shaft All timing belts .. 128 Speed ratios for timing belt standard pulleys.

3 128 Correction factors .. 130 Power rating tables .. 131 Minimum installation and take-up allowances .. 145 Tensioning methods .. 146 Calculating belt tension .. 147 Timing pulleys .. 149 Installation and maintenance .. 153 Troubleshooting guide .. 154 SKF Timing belt tables .. 1553 Additional informationStorage of Power Transmission belts 168 Design optimization .. 16913 ForewordA well designed belt drive will transmit pow-er for many years with a minimum of main-tenance. Although they have been around for a long time, belts are still a very efficient and cost-effective method for transmitting Power from one component to evolution of belts has been remark-able. New materials, designs and manufac-turing methods have increased working load limits and extended belt offers a complete assortment of both standard and high performance belts that can be implemented in many different most common V and timing belts are part of this manual.

4 The Power ratings listed here are the same as those used in our soft-ware programs. However, there will be small differences in the results because the soft-ware will interpolate values if speeds or di-ameters fall between those listed in the ta-bles. As a result, SKF recommends using the belt selection program available for down-load at the data in this catalogueThe data in this catalogue relates to SKF s state-of-the-art technology as of the begin-ning of 2011. The data may differ from that shown in earlier catalogues because of re-vised methods of calculation, redesign or technological reserves the right to make continuing improvements to SKF products with respect to materials, design and manufacturing methods, as well as changes necessitated by technological Power Transmission cataloguesProduct information is also available via the SKF Power Transmission products website at The website does not only provide product information, but also online calculation tools, drawings, and search and selection main printed SKF Power Transmis-sion catalogues are.

5 SKF Transmission chain catalogue SKF Couplings catalogue SKF FX Keyless Bushings catalogue SKF Xtra Power belts catalogueFor more information about SKF Power Transmission products, contact your local SKF representative or SKF Authorized one simple but inspired solution to a misalignment problem in a textile mill in Sweden, and fifteen employees in 1907, SKF has grown to become a global industrial knowledge leader. Over the years, we have built on our exper-tise in bearings, extending it to seals, mecha-tronics, services and lubrication systems. Our knowledge network includes 46 000 employees, 15 000 distributor partners, offices in more than 130 countries, and a growing number of SKF Solution Factory sites around the world.

6 Research and development We have hands-on experience in over forty industries based on our employees know-ledge of real life conditions. In addition, our world-leading experts and university part-ners pioneer advanced theoretical research and development in areas including tribol-ogy, condition monitoring, asset manage-ment and bearing life theory. Our ongoing commitment to research and devel opment helps us keep our customers at the forefront of their industries. Meeting the toughest challenges Our network of knowledge and experience, along with our understanding of how our core technologies can be combined, helps us create innovative solutions that meet the toughest of challenges. We work closely with our customers throughout the asset life cycle, helping them to profitably and re spon sibly grow their Solution Factory makes SKF knowledge and manu facturing expertise available locally to provide unique solutions and services to our with SKF IT and logistics systems and application experts, SKF Authorized Distributors deliver a valuable mix of product and application knowledge to customers for a sustainable future Since 2005, SKF has worked to reduce the negative environmental impact from our operations and those of our suppliers.

7 Our continuing technology development resulted in the introduction of the SKF BeyondZero portfolio of products and services which im-prove efficiency and reduce energy losses, as well as enable new technol ogies har-nessing wind, solar and ocean Power . This combined approach helps reduce the en vir-on mental impact both in our oper ations and our customers oper the knowledge engineering company5 BearingsSKF is the world leader in the design, development and manufacture of high performance rolling bearings, plain bearings, bearing units and maintenanceCondition monitoring technologies and main-tenance services from SKF can help minimize unplanned downtime, improve operational efficiency and reduce maintenance solutionsSKF offers standard seals and custom engineered sealing solutions to increase uptime, improve machine reliability, reduce friction and Power losses, and extend lubricant fly-by-wire systems for aircraft and drive-by-wire systems for off-road.

8 Agricultural and forklift applications replace heavy, grease or oil consuming mechanical and hydraulic solutionsFrom specialized lubricants to state-of-the-art lubrication systems and lubrication management ser vices, lubrication solutions from SKF can help to reduce lubrication related downtime and lubricant and motion controlWith a wide assortment of products from actu-ators and ball screws to profile rail guides SKF can work with you to solve your most pressing linear system knowledge your successSKF Life Cycle Management is how we combine our technology platforms and advanced ser vices, and apply them at each stage of the asset life cycle, to help our customers to be more success ful, sustainable and closely with you Our objective is to help our customers improve productivity, minimize main ten-ance, achieve higher energy and resource efficiency, and optimize designs for long service life and reliability.

9 Innovative solutions Whether the application is linear or rotary or a combination, SKF engineers can work with you at each stage of the asset life cycle to improve machine performance by looking at the entire application. This approach doesn t just focus on individual components like bearings or seals. It looks at the whole application to see how each com po nent in-teracts with each optimization and verificationSKF can work with you to optimize current or new designs with proprietary 3-D mod-ell ing software that can also be used as a virtual test rig to confirm the integrity of the design. SKF Life Cycle ManagementDesign and developManufacture and testSpecificationInstall and commissionOperate and monitorMaintain and repair617 Product featuresSKF Wrapped Wedge and SKF Wrapped Narrow Wedge belts .

10 8 SKF Xtra Power Narrow Wedge belts .. 9 SKF Wrapped Classical belts .. 10 SKF Cogged Raw Edge Narrow Wedge belts .. 11 SKF Cogged Raw Edge Classical belts .. 12 Industrial V and wedge belts .. 13 Selection guide for SKF V- belts .. 14 Service factors .. 16 belt cross section .. 17 Centre distance tables .. 20 Recommended standard pulley diameters for faster shaft metric ISO pulleys .. 36 Speed ratios with standard pulley diameters metric ISO pulleys .. 36 Recommended standard pulley diameters for faster shaft narrow wedge pulleys RMA .. 38 Speed ratios with standard pulley diameters wedge narrow pulleys RMA .. 38 Correction factors .. 40 Power rating tables .. 41 Minimum installation and take-up allowances.