Mechanical Fastener solutions from Flexco
The most respected name in belt conveyor solutions is Flexo. And for simple reason. Flexco products set the industry’s highest standards for design, ease of installation and relliability. Plus, knowledgeable advice and proven solutions help our customers keep conveyor efficiency high and operation costs low.
How to specity the right Flexco fastener
- Determine belt tension.
Most conveyor belting has a mechanical fastener rating. Care should be taken not to operate the belting or fasteners beyond their recommended ratings. - Measure belt thickness.
If fasteners are to be countersunk, measure the belt thickness after a portion of the belt cover has been removed. Choose a fastener size which corresponds to belt thickness. - Measure the diameter of the smallest pulley in your drive.
For tail or take-up of the self-cleaning "wing" type pulley, 25% larger diameter dimensions are generally required. Only consider pulleys over which the belt makes at least a 90° wrap. - Choose the fastener size that is appropriate for your specifications.
Consult individual Flexco application catalogs to guide your selection. - Hinged or solid plate?
When either style is appropriate, solid plate styles are preferred for longer life and to prevent sifting. Hinged fasteners are preferred on portable conveyors and on conveyors with smaller pulley diameters.
Fastener metals
Steel: For most applications, plated steel helps combat mild corrosion.
RustAlloy®: Resists corrosion due to mine water exposure or other cherriical attack.
Stainless Steel: Type 316 stainless steel for resistance to abrasion, magnetic attraction, and corrosion.
Everdur: Spark-free copper and silicon alloy for use in grain elevators and other potentially explosive environments.
MegAlloy®: Superior resistance to wear and abrasion. Provides several times the service life of steel.
Promal: Heat-treated, malleable castings for superior abrasion resistance in corrosive environments.
product available
Flexco' Bolt Solid Plate fasteners are engineered to meet the demands of the toughest material-handling applications. They can be applied to belts mechanically rated up to 620 MW (105 kN/m), and are commonly used for highly abrasive materials such as sand, gravel, and crushed stone, as well as coal, cement, and salt.
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Flexco® Bolt Solid Plate Fastener system Flexco' Bolt Solid Plate fasteners are engineered to meet the demands of the toughest material-handling applications. They can be applied to belts mechanically rated up to 620 MW (105 kN/m), and are commonly used for highly abrasive materials such as sand, gravel, and crushed stone, as well as coal, cement, and salt. |
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Easy installation Specially designed templets, punches and boring tools make it easy to quickly and accurately punch holes into belts. Fasteners can then be installed on site using portable hand or power tools. The exclusive Flexco piloted bolt speeds installation. The piloted bolt tip cradles nuts securely in place, and simplifies installation by automatically aligning the bolt and nut threads. |
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90° splice for standard bulk conveyors |
High Strength nylon fill cords enhance mechanical fastener holding ability and resist fastener pull-out for reliable performance and increase uptime. |
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4 5° splice for use with smaller pulleys | A 45° splice can be installed in situations where conveyor pulley diameters are as much as 25% smaller than the recommended size for 90° splices. This angled splice distributes tension over a greater belt area. The 45° splice passes more smoothly over pulleys and under cleaners. Cleaner blade life can be extended even more by skiving the 45° splice. |
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Recessed Bolt SolidPlate |
When belt top covers are 3/16" (4.8 mm) or more, we recommend countersinking (or recessing) fastener plates. Countersinking permits deeper penetration of fastener teeth into the carcass. This reduces plate exposure and extends splice life. Countersinking results in a lower profile splice for improved fastener compatibility with cleaner blades and skirt boards and contributes to reduced noise on return idlers. And because countersinking reduces the effective thickness of the belt, smaller fasteners may be used in applications employing smaller pulley diameters. |
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repair conveyor belt edge tears and holes. | For jagged length-wise conveyor belt tears, standard Bolt Solid Plate fasteners can be combined with the three-bolt Rip Plate fasteners. Each is installed alternately, across the entire length of the rip, as displayed in the photo at right. Three-bolt Rip Plate fasteners can also be used to bridge "soft" spots in the belt before they become rips. |
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wedlok® High Tension Splice | Wedlok® splices cost substantially less than a vulcanized splice, take considerably less installation time, and can be installed by your own maintenance crews on belts with mechanical fastener ratings up to 700 PIW (123 kN/m) The Wedlok splice requires standard No. 2 Bolt Solid Plate fasteners, and the Wedlok Kit consisting of a special tip, chevron and tail fasteners. A set of three Wedlok templets is also required. |
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90o Splice for Bucket Elevator Belts |
The standard 90° splice is recommended for most elevator belts. Bolt Solid Plate provide a smooth underside on the belt, protecting pulley bearings and lagging from the pounding resulting from bolted over-lap splices. The splice delivers tensile strength equal to that of a lap joint. And it can be made in confined spaces. For extremely heavy jobs, 35% greater strength than a lap joint can be obtained by adding a splice pad constructed from all-nylon conveyor belt carcass material. |
Installation Tools and Supplies
Installation Tools and Supplies
The only tools needed for Bolt Solid Plate fastener installation are a templet and portable hand or power tools such as wrenches and belt punches. Impact wrench-driven power tools are recommended since they can speed installation time by at least 50%.
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Application versatility | Flexco-Lok®Tape is a rigid nylon tape that helps eliminate belt ripple on plied or solid-woven belting, so belts run smoothly over pulleys and under cleaners. Also helps seal the splice against seepage of fines and moisture. |
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Easy installation | On-site installation requires only portable hand or power tools. A specially designed templet and boring tool or belt punch quickly and accurately punches bolt holes into belts. Installation is also simplified by our exclusive piloted bolt. Tapered bolt tips cradle nuts securely in place and eliminate the need to twist nuts onto bolts by hand during installation set-up. |
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Flexco ® Bolt Solid Plate |
Templets for Bolt Solid Plate fastener installation are required for 90° or 45° splice applications. Templets simplify installation by providing an accurate guide for precise placement of bolt holes. Lengths for all standard belt widths are available
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Flexco ® Bolt Hinged Fastener system
For belts operating over smaller pulleys - such as in construction equipment and road machinery - Flexco® Bolt Hinged fasteners are strong, dependable and easy-to-install. Designed as a compression fastener, Bolt Hinged is fast'ened to the belt ends with high tensile strength bolts. These compress the plates in the belt cover. Additional holding capability is provided by the fastener teeth that inbed in the belt without damage to the belt carcass. So splice tension is distributed across the entire plate width and teeth secure the fastener to resist pull-out.
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Application versatility | Hinged construction makes Bolt Hinged fasteners ideal for many types of machinery that use smaller pulleys but still require a high-strength splice. And for applications requiring frequent belt-length alterations, the joint can be separated simply by removing the hinge pin. |
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Easy installation | On-site installation requires only portable hand or power tools. A specially designed templet and boring tool or belt punch quickly and accurately punches bolt holes into belts. Installation is also simplified by our exclusive piloted bolt. Tapered bolt tips cradle nuts securely in place and eliminate the need to twist nuts onto bolts by hand during installation set-up. |
Heavy-duty Rivet Solid Plate Fastener System
Recommended for the most demanding high-tension applications. The staggered, multiple
-point attachment delivers long-lasting holding ability for mechanical ratings up to 800 PI .W. (140 kN/m).
Rivet Solid Plate fasteners feature a smooth coined-edge profile eliminating fastener projections and potential hang-ups. The broad width and heavy gauge of the plates also results in long fastener wear life.
Easy installation
Thanks to the Flexco self-setting rivet method and portable MBRTA installation tools, Rivet Solid Plate fasteners install quickly and easily. Rivets are installed from the top side of the belt. And the specially shaped head of each pilot nail works with the installation tool's anvil plate to set rivets. Hammer blows drive and set rivets and also compress fastener plates uniformly for the strongest possible splice
