### Key Factors to Consider

**Grab Volume:** 12 cbm**Bulk Density of Material:** This can vary significantly based on the material. For instance, the bulk density of various materials about 0.65-2.50 tons per cubic meter. For the calculation, we can assume an average density of 1.00 tons per cubic meter.**Cycle Time:** This includes the time taken to load the grab, transport the material, unload, and return for the next cycle. Typically, this can range between 2 to 3 minutes depending on the setup and efficiency.**Operational Efficiency:** It is unlikely that the grab will operate at 100% efficiency due to breaks, slowdowns, and maintenance. An operational efficiency of around 80% is realistic.**Working Hours:** Number of operational hours per day. We'll assume 24 hours of operation with three 8-hour shifts.

### Calculation

**Material Weight per Cycle:** Weight per cycle=Grab Volume × Bulk Density | Weight per cycle=12cbm×1.00tons/cbm=12.0tons**Number of Cycles per Hour:** Assuming an average cycle time of 2.5 minutes: Number of Cycles per Hour= 60 / 2.5 = 24**Tonnage per Hour:** Tonnage per Hour=Weight per cycle×Number of Cycles per Hour | Tonnage per Hour=12.0 tons×24=288.0 tons**Daily Tonnage (without considering efficiency):** Daily T=Tonnage per Hour × Working Hours per Day | Daily T=288.0tons×24=6,912.0tons**Daily Tonnage (considering 80% efficiency):** Effective Daily T=Daily Tonnage × Efficiency | Effective Daily T=6,912.0tons×0.80=5,529.6 tons

### Summary

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**Weight per Cycle:** 12.0 tons - •
**Cycles per Hour:** 24 - •
**Tonnage per Hour:** 288.0 tons - •
**Daily Tonnage (without efficiency):** 6,912.0 tons - •
**Effective Daily Tonnage (with 80% efficiency):** 5,529.6 tons

This calculation provides an estimate of the daily operation tonnage for a 12 cbm radio remote control grab operating under the given assumptions. Adjustments can be made based on actual cycle times, bulk density of the material, and operational efficiencies by GrabsIndia.com.