Pneumatic-tired rollers can be ballasted to adjust the weight. Depending on size and type, the weight may vary from 10 to 35 tons. However, more important than gross weight is the weight per wheel for the material being compacted. Figure 11-43.—Action of a pneumatic-tired roller.
The 815K soil compactor, weighing 49,353 pounds and equipped with a Cat C7.1 Tier 4-Final engine, features a Caterpillar-built power train Volvo SD75B, SD115B Gives Operator Control Tier 4-Final SD75B and SD115B soil compactors have a drum control system that allows the operator to adjust frequency and amplitude as soil types and conditions change.
Tandem rollers (having one wheel at rear and one wheel in front) Three wheeled rollers (having two wheel at rear and one in front) The weight of tandem roller varies from 2 to 8 tonnes and that of two wheeled roller varies from 8 to 10 tonnes. Three wheeled roller; It ground coverage provided by smooth wheeled roller is 100%.
Cat Tandem Vibratory Rollers do that and more. Caterpillar offers a vibratory system for every application. Most models have high frequency combined with low amplitude that match high paving speed on thin lifts as well as low frequency with high amplitude that match low paving speed on thick lifts of stiff material.