ROLLERS AND COMPONENTS FOR BULk HANDLING All dimensions indicated in this catalogue are subject to working tolerances and, althuogh the drawings are faithfully produced they are not necessarily binding. Rulmeca Holding S.p.A reserves the right to modify any product without notice. Rulmeca Holding S.p.A. Via A. Toscanini, 1 I-24011 Almè (BG) Italy Tel. +39 035 4300111 Fax +39 035 545700 [email protected] Please contact your local Rulmeca Company, you will find our contact details in our web site: www.rulmeca.com Moving ahead. BULK HANDLING ROLLERS AND COMPONENTS FOR BULk HANDLING Translation, reproduction and adaption rights, total and/or partial, by any means (microfilms and photostatic copies included) are reserved for all Countries. Moving ahead. Copyright © May 2015 RULMECA HOLDING SpA 9th Editio

Rulmeca – Moving ahead. Since its foundation in 1962, Rulmeca, headquartered in Bergamo (Almé), Italy, has grown to become one of the world’s leading manufacturers of conveyor rollers/idlers, motorized pulleys, fabricated pulleys and other components for the bulk handling industry. 1,200 employees in twenty-two production and sales companies around the globe serve clients in 85 countries. Today, Rulmeca Group’s global business incorporates the product brands Rulmeca, Precismeca and Melco. All three of them specialize in the supply of long-lasting premium belt conveyor components. Rulmeca Group...

TABLE OF CONTENTS 1 Technical Information page 9

5 Belt cleaners and scrapers page 265 5.4.8 Codes SPU Spare Parts & Accessories - PU Series Scrapers ... 288

Todays movement of goods and bulk materials demands state of the art methods. In this field Rulmeca have the reputation to be one of the largest and most qualified producers in the world of rollers and equipment for all types of conveyors and automatic materials handling systems. The development of the Company has reached impressive and significant levels. Using advanced information technology and computer aided design the functions of the management, commercial, administration, project design, production and quality control blend together in an efficient, functional, and harmonious way. The...

Modern, Flexible Technology Automation

Fields of application: - Coal - Steel - Energy - Chemical - Fertiliser - Glass - Cement - Mineral extraction Examples of the most important industries where Rulmeca has supplied rollers and components for the conveying of Bulk materials. In these fields belt conveyors distinguish themselves for their flexibility, practicality and economic application.

1 Technical Information project and design criteria for belt conveyors

Technical Information project and design criteria for belt conveyors Summary 1 | [Technical information page 9

1.1 Introduction During the project design stage for the transport of raw materials or finished products, the choice of the method must favour the most cost effective solution for the volume of material moved, the plant and its maintenance, its flexibility for adaptation and its ability to carry a variety of loads and even be overloaded at times. The belt conveyor, increasingly used in the last 10 years, is a method of conveying that satisfies the above selection criteria. Compared with other systems it is in fact the most economic, especially when one considers its adaptability to the most diverse and...

Technical Information project and design criteria for belt conveyors a pitch of troughing sets A length of roller spindle ag distance between the pulley flange and support a pitch of impact sets ao pitch of carrying sets at pitch of transition sets au pitch of return sets B length of roller shell C distance between roller supports Ca static load on the carrying set ca load on central roller of the carrying set Ca1 dynamic load on the carrying set cd dynamic load on the bearing Cf constant of elasticity of the frame/impact roller ch flats of roller shaft Co...

The symbol for kilogram (Kg) is intended as a unit of force. Ivm load volume corrected to 1 m/s in relation to the inclination and irregularity of the feed Ivt load volume theoretic to 1 m/s J moment of inertia of section of material oamm admissible stress Lb dimensions of material lump Mif ideal bending moment pd dynamic falling force pi impact force of falling material pic force impact on central roller Ppri weight of lower rotating parts Pprs weight of upper rotating parts qb weight of belt per linear metre qbn weight of belt density qG weight of material...

Belt conveyor Loading hopper Unloading hopper Carryng troughing sets Impact troughing sets project and design criteria for belt conveyors Return pulley Return idler sets Drive pulley Fig.1 - Basic drawing of a belt conveyor 1.3 Technical characteristics of belt conveyors The function of a belt conveyor is to continuously transport bulk materials of a mixed or homogeneous sort, a variable distance of some metres to tens of kilometres. One of the principal components of the conveyor is the elastomer belt which has a double function: - to contain the conveyed material - to transmit the force necessary...

All these factors combine to limit operational costs, especially where excavation work occurs, or underpasses below hills, roads or other obstacles. A smooth belt conveyor may travel up slopes up to 18° and there is always the possibility to recover energy on down hill sections. Projects have therefore been realised where conveyor system lengths may be up to 100 Km long with single sections of conveyor of 15 Km. Utilising the characteristics of flexibility, strength and economy of purpose the belt conveyor is the practical solution to conveying bulk and other materials. Continuous developments...

Information project and design criteria for belt conveyors 1.4 Rulmeca key components for belt conveyors Fig. 3 illustrates the basic components of a typical belt conveyor. In practice, according to the variety of uses, it is possible to have many other diverse combinations of load and unload areas, elevations, and other accessories. Drive head May be of traditional design or with motorised drum unit. - Traditional Comprises a drive group consisting of a drive drum of a diameter appropriately sized to the load on the belt, and an idler drum at the opposing end. The power is supplied by a direct...