Choose troughing angle. Determine minimum belt width based on lump size. Select a suitable belt speed. Select required belt width. Determine actual troughing (carrying) idler load and idler spacing. Select troughing (carrying) idler series. Step 9 Determine return idler load and idler spacing. Step 10 Select return idler series.
Dec 05, 2015· The most commonly used type of carrying idlers used for handling bulk load consist of three in line idler rolls of equal length. The three equal length roll troughing idlers form the belt into the best troughed shape to carry a maximum load cross section.
Note: While idler spacing can vary, depending upon individual requirements, many conveyors will use 4 feet as the spacing for carrying idlers, 1 foot for impact idlers, and 8 or 10 feet for returns. 10 feet is common, while some use 8 feet, i.e. double the carrying idler spacing, as this makes framework simpler. For more detail information see ...
roll of troughing idlers . b . Bolt Hole Spacing — across the width of the conveyor frame for troughing and return idlers . (Belt width plus 9") Rex Idlers conform to the CEMA dimensional standards and are interchangeable with competitive idlers listed below . manufacturer Cema B Cema C Cema D Cema e Rexnord Series B+ Series C Series D Series E
Idler spacing will depend on a number of factors, i.e. layout, loads, rates of feed, belt tension. etc. Average troughing idler spacing for run of mine ore is in the vicinity of 1,2 meter. Return idler spacing is two to three times the troughing spacing. Types and functions of idlers
The idlers are an important part of a belt conveyor system; they provide stability to the conveyed materials. There are mainly three types of idles used in the industry namely, flat idlers, trough idlers, and garland idlers. In this article we will discuss only the flat type belt conveyor idler design. The Basics of Flat Idler Design
In determining the roller spacing at the same time also take into account the impact of other factors, such as material properties, conveyor belt width, conveyor inclination, the actual operating conditions. When the conveyor is long, the idler spacing can be determined indefinitely.
Jan 22, 2013· The spacing of idlers on the loaded run of the conveyor, carrying bulk material, depends on the belt width, the specific weight of the bulk material, the type of the idler. The spacing of the idlers in the loading zone of the belt is about half the normal spacing of idlers in the carrying side. A set of self aligning idler or training idler ...
N-2 Idler Types Equal Troughing Idlers are designed to support the belt and transport material on the carrying side of the belt . Troughing Idlers typically consist of 3 rollers with wing rolls at 20, 35 or 45 degree inclinations .