# Quick Reference Charts

## Quick Reference Charts

Quicklinks: |
Idler Section, Series Range & Bearing Capacity |

### Idler Section, Series Range & Bearing Capacity

**Mason idler series numbers 22, 24 and 25 relate to the bearing capacity.**

The following table gives the maximum load ratings for troughing idler sets and flat, belt carrying or return idlers in our standard manufacture range based on a nominal bearing life of 50,000 hours, a maximum shaft deflection limit of 10 minutes, belt speeds not exceeding 5 meters per second and standard transom sizes for the troughing sets. It should be noted that in most cases it is the size of the idler set transom and the shaft size between bearings, for flat carrying or return idlers that are the limiting factors.

Heavier transoms and larger shaft to increase load carrying capacities can be supplied to special order and Masons will provide or check idler selection data for specific applications, other B10 lifes and belt speeds.

### Load Capacity - Quick Reference Chart (Common Material)

### Material Characteristics

The design of the belt conveyor should begin with an accurate assessment of the characterstics of the material to be handled. The following data covers some important considerations and give information on normal characteristics of the more common materials conveyed.

### Cross Section Areas

Cross sectional areas (CSA) tabulated below are given in square meters, for various surcharge angles. They take into account commonly experienced load fluctuations and are based on a standard edge distance.

"A" = 0.055 "B" + 22.5 where "B" is the belt width.

A = Standard Edge Distance = 0.055 "B" +22.5

C = Surcharge Angle

D = Trough Angle

### Reduction Factors CSA Incline & Decline Belts