Load Capacity & Service Classification

CMAA crane service classes A through F explained — how to calculate wheel loads, determine required diameter, and avoid under-specification.

Step-by-step CMAA wheel diameter calculation with worked examples for Class C, D, and E — the formula, inputs, and common errors.

Complete wheel specifications for Class D, E, and F service — alloy grade, hardness, case depth, bore tolerance, and documentation requirements.

Complete worked example of crane wheel load calculation including bridge dead load, trolley weight, and CMAA diameter determination.

CMAA impact factors, horizontal dynamic loads, and how dynamic loading affects alloy, hardness, and case depth specification.

Complete crane wheel specification checklist covering service class, geometry, tread profile, flange, bore, material, hardness, and documentation.