Idler design manual

Smart-Idler® housings are made from **tough** glass filled nylon. It’s **frictionless** design has no wear, and it’s completely water and dust **ingress protected**. Smart-Idler® is low-cost at less than $30 per roller. Smart-Idler® **improves safety** by reducing the need for potentially hazardous manual inspections. Idler life is determined by a combination of many factors, such as seals, bearings, shell thickness, belt speed, lump size/material density, maintenance, environment, temperature, and the proper CEMA series of idler to handle the maximum calculated idler load. CEMA B load rating based on minimum L 10 of 30, hours at rpm. Design considerations Conveyor horsepower determination — graphical method mation, and formulas presented in this manual represent recent improvements in the Idler rotational resistance and the flexing resistance of the belt increase in cold weather operation. In extremely cold weather the proper lubricant for idlers must be.

leading idler-roller/rail design and support team. Superior Design Means Longer Life. Longer Life Means Lower Costs. Osborn Load Runners are robust assemblies of carefully fabricated outer shells/treads and precision bearings fi tted to high tolerance shafts. All Osborn Load Runners match the tread, shaft and bearings. separation and/or idler junction failure. STRAIGHT WARP UsFlex/Wearlok The straight warp carcass design yields a carcass construction wherein the basic lengthwise (warp) yarns are essentially uncrimped. These are the main load-carrying tension yarns. Fill yarns are then laid transversely and alternately, above and below the main tension yarns. • IDLER MISALIGNMENT - This is the height difference between subsequent idlers which adds a belt tension component to the idler load calculations. The default value of " is typical but it can be adjusted CONVEYOR DESIGN PROGRAM uSER MANUAL.

Vee = Design belt speed (fpm) SI = Spacing of idlers (ft) Kl = Lump adjustment factor (see Table ) IML = Idler misalignment load (lbs) due to idler height deviation and belt tension = (D x T) / (6 x SI) Where: D = Misalignment (in.) T = Belt tension (lbs) SI = Idler spacing (ft). To overcome these problems, Sandvik HA idlers are designed with the following features: • A breather hole to prevent cyclic pumping of air through the bearing and seal assembly ( bearings and above). • Bearings are sealed by a grease filled, multi-labyrinth, seal assembly providing a long life seal. 24/05/ Dunlop Conveyor Belt Design Manual Page 30 of 33 Belt width W mm Conveyor length L m Lift H 45 m Max capacity τ t/hr Belt speed S 3,5 m/s Skirt length Ls 3 m Material conveyed Iron Ore Idler Data Carry Return Impact Lump size mm Trough Angle 35 0 35 degree Bulk densiy 2,4 t/m3 Roll Diameter mm Spacing 1.