Crane Hoist Specs: cmaa_duty
Crane and hoist load ratings, duty classifications, and design parameters for overhead bridge cranes (single/double girder, top running/underhung), gantry cranes, jib cranes, monorails, and electric chain/wire rope hoists. Covers CMAA Classes A-F, FEM/ISO mechanism groups M2-M7, safe working load, span, bridge/trolley/hoist speeds, design life, and load spectrum factor per ASME B30 series, CMAA 70/74, FEM 1.001, ISO 4301-1.
| crane type | record id | cmaa class | design life cycles (cycles) | fem iso group | load spectrum factor (dimensionless) | notes |
|---|---|---|---|---|---|---|
| cmaa_duty | CLASS_A | A | 100,000 | M2 | 0.125 | CMAA Class A: standby/infrequent; 0-2 lifts/hr; 10 ft avg lift; load class Q1; design life 1e5 cycles; power rooms/transformer vaults; single shift |
| cmaa_duty | CLASS_B | B | 200,000 | M3 | 0.25 | CMAA Class B: light; 2-5 lifts/hr; 10 ft avg lift; load class Q2; design life 2e5 cycles; light assembly; single shift operation |
| cmaa_duty | CLASS_C | C | 500,000 | M4 | 0.5 | CMAA Class C: moderate; 5-10 lifts/hr; 15 ft avg lift; load class Q2; design life 5e5 cycles; general manufacturing; most common class |
This is a sample. Search the full crane hoist specs dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE